Maryland ZIP Codes are essential for accurate mail delivery, online registrations, and location identification across the state. If you are searching for a reliable list of Maryland ZIP codes in the United States, this page provides a complete and well-organized directory covering cities, towns, and districts to help you quickly find the correct postal code. All ZIP codes listed here are UPS-verified for accuracy.
| Quick Info |
|---|
| State: Maryland Capital: Annapolis Country: United States Continent: North America Area Codes: Multiple ZIP Code: 21401 |
What Is the ZIP Code for Maryland?
There is no single ZIP code for the entire state of Maryland. Instead, Maryland ZIP Codes vary by location, with each city and town assigned a unique five-digit postal code for proper routing of mail and parcels.
Most ZIP codes in Maryland begin with 20 or 21. To make your search easier, the table below lists Maryland ZIP Codes by city and town, allowing you to browse and find the exact ZIP code you need.
| S/N | ZIP Code | City/Place | Similar Places | County | State | Country | Type |
|---|---|---|---|---|---|---|---|
| 1 | 20733 | Churchton | Anne Arundel County | Maryland | United States | Standard | |
| 2 | 20751 | Deale | Anne Arundel County | Maryland | United States | Standard | |
| 3 | 20779 | Tracys Landing | Anne Arundel County | Maryland | United States | Standard | |
| 4 | 21012 | Arnold | Anne Arundel County | Maryland | United States | Standard | |
| 5 | 21032 | Crownsville | Anne Arundel County | Maryland | United States | Standard | |
| 6 | 21037 | Edgewater | Anne Arundel County | Maryland | United States | Standard | |
| 7 | 21056 | Gibson Island | Anne Arundel County | Maryland | United States | P.O Box | |
| 8 | 21060 | Glen Burnie | Anne Arundel County | Maryland | United States | Standard | |
| 9 | 21061 | Glen Burnie | Anne Arundel County | Maryland | United States | Standard | |
| 10 | 21076 | Hanover | Anne Arundel County | Maryland | United States | Standard | |
| 11 | 21077 | Harmans | Anne Arundel County | Maryland | United States | Standard | |
| 12 | 21090 | Linthicum Heights | Linthicum | Anne Arundel County | Maryland | United States | Standard |
| 13 | 21108 | Millersville | Anne Arundel County | Maryland | United States | Standard | |
| 14 | 21122 | Pasadena | Lake Shore, Riviera Beach | Anne Arundel County | Maryland | United States | Standard |
| 15 | 21140 | Riva | Anne Arundel County | Maryland | United States | Standard | |
| 16 | 21144 | Severn | Anne Arundel County | Maryland | United States | Standard | |
| 17 | 21146 | Severna Park | Anne Arundel County | Maryland | United States | Standard | |
| 18 | 21226 | Curtis Bay | Anne Arundel County | Maryland | United States | Standard | |
| 19 | 21240 | Millersville | Anne Arundel County | Maryland | United States | Standard | |
| 20 | 21401 | Annapolis | Cape Saint Claire | Anne Arundel County | Maryland | United States | Standard |
| 21 | 21402 | Annapolis | Naval Academy, MD | Anne Arundel County | Maryland | United States | Standard |
| 22 | 21403 | Annapolis | Highland Bch | Anne Arundel County | Maryland | United States | Standard |
| 23 | 21405 | Annapolis | Sherwood Forest, Sherwood Frst | Anne Arundel County | Maryland | United States | Standard |
| 24 | 21409 | Annapolis | Atlantis | Anne Arundel County | Maryland | United States | Standard |
| 25 | 21409 | Annapolis | Amberley | Anne Arundel County | Maryland | United States | Standard |
| 26 | 21409 | Annapolis | Cedarwood Cove | Anne Arundel County | Maryland | United States | Standard |
| 27 | 21409 | Annapolis | Cape St Claire | Anne Arundel County | Maryland | United States | Standard |
| 28 | 21409 | Annapolis | Whitehall Beach | Anne Arundel County | Maryland | United States | Standard |
| 29 | 21409 | Annapolis | Whitehall Manor | Anne Arundel County | Maryland | United States | Standard |
| 30 | 21409 | Annapolis | Woods Landing | Anne Arundel County | Maryland | United States | Standard |
| 31 | 21409 | Annapolis | Skidmore | Anne Arundel County | Maryland | United States | Standard |
| 32 | 21409 | Annapolis | Yorktown | Anne Arundel County | Maryland | United States | Standard |
| 33 | 21233 | Baltimore | Baltimore City | Maryland | United States | Standard | |
| 34 | 21287 | Baltimore | Baltimore City | Maryland | United States | Standard | |
| 35 | 21013 | Baldwin | Baltimore County | Maryland | United States | Standard | |
| 36 | 21023 | Butler | Baltimore County | Maryland | United States | P.O Box | |
| 37 | 21030 | Cockeysville | Cockysvil, Hunt Valley | Baltimore County | Maryland | United States | Standard |
| 38 | 21031 | Hunt Valley | Baltimore County | Maryland | United States | Standard | |
| 39 | 21051 | Fork | Baltimore County | Maryland | United States | Standard | |
| 40 | 21052 | Fort Howard | Baltimore County | Maryland | United States | P.O Box | |
| 41 | 21057 | Glen Arm | Baltimore County | Maryland | United States | Standard | |
| 42 | 21071 | Glyndon | Baltimore County | Maryland | United States | P.O Box | |
| 43 | 21082 | Hydes | Baltimore County | Maryland | United States | Standard | |
| 44 | 21087 | Kingsville, Bradshaw | Baltimore County | Maryland | United States | Standard | |
| 45 | 21093 | Lutherville Timonium | Baltimore County | Maryland | United States | Standard | |
| 46 | 21105 | Maryland Line | Baltimore County | Maryland | United States | P.O Box | |
| 47 | 21111 | Monkton | Hereford | Baltimore County | Maryland | United States | Standard |
| 48 | 21117 | Owings Mills | Garrison | Baltimore County | Maryland | United States | Standard |
| 49 | 21128 | Perry Hall | Baltimore County | Maryland | United States | Standard | |
| 50 | 21131 | Phoenix | Jacksonville | Baltimore County | Maryland | United States | Standard |
| 51 | 21133 | Randallstown | Baltimore County | Maryland | United States | Standard | |
| 52 | 21136 | Reisterstown | Glyndon | Baltimore County | Maryland | United States | Standard |
| 53 | 21152 | Sparks Glencoe | Baltimore County | Maryland | United States | Standard | |
| 54 | 21153 | Stevenson | Baltimore County | Maryland | United States | P.O Box | |
| 55 | 21155 | Upperco, Fowbelsburg | Baltimore County | Maryland | United States | Standard | |
| 56 | 21156 | Upper Falls | Baltimore County | Maryland | United States | Standard | |
| 57 | 21162 | White Marsh | Baltimore County | Maryland | United States | Standard | |
| 58 | 21204 | Towson, Baltimore | Baltimore County | Maryland | United States | Standard | |
| 59 | 21207 | Gwynn Oak | Baltimore County | Maryland | United States | Standard | |
| 60 | 21208 | Pikesville, Baltimore | Baltimore County | Maryland | United States | Standard | |
| 61 | 21209 | Mount Washington | Baltimore County | Maryland | United States | Standard | |
| 62 | 21219 | Sparrows Point | Baltimore County | Maryland | United States | Standard | |
| 63 | 21220 | Middle River | Baltimore County | Maryland | United States | Standard | |
| 64 | 21221 | Essex | Baltimore County | Maryland | United States | Standard | |
| 65 | 21222 | Dundalk | Baltimore County | Maryland | United States | Standard | |
| 66 | 21227 | Halethorpe | Baltimore County | Maryland | United States | Standard | |
| 67 | 21228 | Catonsville | Baltimore County | Maryland | United States | Standard | |
| 68 | 21234 | Parkville, | Baltimore County | Maryland | United States | Standard | |
| 69 | 21236 | Nottingham, | Baltimore County | Maryland | United States | Standard | |
| 70 | 21237 | Rosedale, | Baltimore County | Maryland | United States | Standard | |
| 71 | 21244 | Windsor Mill | Baltimore County | Maryland | United States | Standard | |
| 72 | 21250 | Baltimore | University of Maryland | Baltimore County | Maryland | United States | Standard |
| 73 | 21252 | Baltimore | Baltimore County | Maryland | United States | Standard | |
| 74 | 21285 | Baltimore | Baltimore County | Maryland | United States | P.O Box | |
| 75 | 21286 | Baltimore | Loch Raven | Baltimore County | Maryland | United States | Standard |
| 76 | 21201 | Baltimore | Baltimore City | Maryland | United States | Standard | |
| 77 | 21202 | Baltimore | East Case | Baltimore City | Maryland | United States | Standard |
| 78 | Towson | Maryland | United States | ||||
| 79 | 21204 | Baltimore | Ruxton, Riderwood | Baltimore City | Maryland | United States | |
| 80 | 21205 | Baltimore | Baltimore City | Maryland | United States | Standard | |
| 81 | 21206 | Baltimore | Raspeburg | Baltimore City | Maryland | United States | Standard |
| 82 | 21210 | Baltimore, | Roland Park | Baltimore City | Maryland | United States | Standard |
| 83 | 21211 | Baltimore | Hampden, Roosevelt Park | Baltimore City | Maryland | United States | Standard |
| 84 | 21212 | Baltimore | Govans | Baltimore City | Maryland | United States | Standard |
| 85 | 21213 | Baltimore | Clifton | Baltimore City | Maryland | United States | Standard |
| 86 | 21214 | Baltimore | Lauraville, Waltherson | Baltimore City | Maryland | United States | Standard |
| 87 | 21215 | Baltimore, | Central Park Heights | Baltimore City | Maryland | United States | Standard |
| 88 | 21216 | Baltimore | Bridgeview/Greenlawn | Baltimore City | Maryland | United States | Standard |
| 89 | 21216 | Baltimore | Franklintown Road | Baltimore City | Maryland | United States | Standard |
| 90 | 21216 | Baltimore | Gwynns Falls/Leakin Park | Baltimore City | Maryland | United States | Standard |
| 91 | 21216 | Baltimore | Hanlon Longwood | Baltimore City | Maryland | United States | Standard |
| 92 | 21216 | Baltimore | Walbrook | Baltimore City | Maryland | United States | Standard |
| 93 | 21216 | Baltimore | Windsor Hills | Baltimore City | Maryland | United States | Standard |
| 94 | 21217 | Baltimore | Druid | Baltimore City | Maryland | United States | Standard |
| 95 | 21218 | Baltimore | Montebello, Waverly | Baltimore City | Maryland | United States | Standard |
| 96 | 21223 | Baltimore | Franklin, Harlem Park | Baltimore City | Maryland | United States | Standard |
| 97 | 21224 | Baltimore | Highlandtown | Baltimore City | Maryland | United States | Standard |
| 98 | 21225 | Brooklyn | Baltimore, Brooklyn Park | Baltimore City | Maryland | United States | Standard |
| 99 | 21229 | Baltimore | Carroll, Edmondson | Baltimore City | Maryland | United States | Standard |
| 100 | 21230 | Baltimore | South Baltimore | Baltimore City | Maryland | United States | Standard |
| 101 | 21231 | Baltimore | Baltimore City | Maryland | United States | Standard | |
| 102 | 21239 | Baltimore | Idlewylde, Loch Hill, Northwood | Baltimore City | Maryland | United States | Standard |
| 103 | 21251 | Baltimore | Baltimore City | Maryland | United States | Standard | |
| 104 | 20615 | Broomes Island | Calvert County | Maryland | United States | Standard | |
| 105 | 20629 | Dowell | Calvert County | Maryland | United States | P.O Box | |
| 106 | 20676 | Port Republic | Calvert County | Maryland | United States | Standard | |
| 107 | 20689 | Sunderland | Calvert County | Maryland | United States | Standard | |
| 108 | 21641 | Hillsboro | Caroline County | Maryland | United States | P.O Box | |
| 109 | 21655 | Preston | Caroline County | Maryland | United States | Standard | |
| 110 | 21660 | Ridgely | Caroline County | Maryland | United States | Standard | |
| 111 | 21048 | Finksburg | Carroll County | Maryland | United States | Standard | |
| 112 | 21074 | Hampstead | Greenmount | Carroll County | Maryland | United States | Standard |
| 113 | 21157 | Westminster | Carroll County | Maryland | United States | Standard | |
| 114 | 21784 | Sykesville | Eldersburg, Gaither | Carroll County | Maryland | United States | Standard |
| 115 | 21901 | North East | Cecil County | Maryland | United States | Standard | |
| 116 | 21902 | Perry Point | Cecil County | Maryland | United States | P.O Box | |
| 117 | 21903 | Perryville | Cecil County | Maryland | United States | Standard | |
| 118 | 21904 | Port Deposit | Bainbridge | Cecil County | Maryland | United States | Standard |
| 119 | 21913 | Cecilton | Cecil County | Maryland | United States | P.O Box | |
| 120 | 21914 | Charlestown | Cecil County | Maryland | United States | P.O Box | |
| 121 | 21917 | Colora | Cecil County | Maryland | United States | Standard | |
| 122 | 21919 | Earleville | Cecil County | Maryland | United States | Standard | |
| 123 | 21920 | Elk Mills | Cecil County | Maryland | United States | P.O Box | |
| 124 | 21930 | Georgetown | Cecil County | Maryland | United States | P.O Box | |
| 125 | 21613 | Cambridge | Dorchester County | Maryland | United States | Standard | |
| 126 | 21622 | Church Creek | Dorchester County | Maryland | United States | Standard | |
| 127 | 21626 | Crapo | Dorchester County | Maryland | United States | Standard | |
| 128 | 21627 | Crocheron | Dorchester County | Maryland | United States | Standard | |
| 129 | 21631 | East New Market, | Dorchester County | Maryland | United States | Standard | |
| 130 | 21634 | Fishing Creek | Dorchester County | Maryland | United States | Standard | |
| 131 | 21643 | Hurlock | Dorchester County | Maryland | United States | Standard | |
| 132 | 21648 | Madison | Dorchester County | Maryland | United States | Standard | |
| 133 | 21659 | Rhodesdale | Brookview, Eldorado, Galestown | Dorchester County | Maryland | United States | Standard |
| 134 | 21664 | Secretary | Dorchester County | Maryland | United States | P.O Box | |
| 135 | 21669 | Taylors Island | Dorchester County | Maryland | United States | P.O Box | |
| 136 | 21672 | Toddville | Dorchester County | Maryland | United States | Standard | |
| 137 | 21675 | Wingate | Dorchester County | Maryland | United States | Standard | |
| 138 | 21677 | Woolford | Dorchester County | Maryland | United States | Standard | |
| 139 | 21835 | Linkwood | Dorchester County | Maryland | United States | Standard | |
| 140 | 21869 | Vienna | Dorchester County | Maryland | United States | Standard | |
| 141 | 21001 | Aberdeen | Harford County | Maryland | United States | Standard | |
| 142 | 21005 | Aberdeen Proving Ground | Harford County | Maryland | United States | Standard | |
| 143 | 21009 | Abingdon | Harford County | Maryland | United States | Standard | |
| 144 | 21010 | Gunpowder | Harford County | Maryland | United States | Standard | |
| 145 | 21014 | Bel Air | Harford County | Maryland | United States | Standard | |
| 146 | 21015 | Bel Air | Harford County | Maryland | United States | Standard | |
| 147 | 21017 | Belcamp | Harford County | Maryland | United States | Standard | |
| 148 | 21028 | Churchville | Harford County | Maryland | United States | Standard | |
| 149 | 21034 | Darlington | Harford County | Maryland | United States | Standard | |
| 150 | 21040 | Edgewood | Harford County | Maryland | United States | Standard | |
| 151 | 21047 | Fallston | Harford County | Maryland | United States | Standard | |
| 152 | 21050 | Forest Hill | Harford County | Maryland | United States | Standard | |
| 153 | 21078 | Havre De Grace, | Harford County | Maryland | United States | Standard | |
| 154 | 21084 | Jarrettsville | Harford County | Maryland | United States | Standard | |
| 155 | 21085 | Joppa | Harford County | Maryland | United States | Standard | |
| 156 | 21130 | Perryman | Harford County | Maryland | United States | P.O Box | |
| 157 | 21154 | Street | Harford County | Maryland | United States | Standard | |
| 158 | 21042 | Ellicott City | Howard County | Maryland | United States | Standard | |
| 159 | 21043 | Ellicott City | Daniels, Ilchester, Oella | Howard County | Maryland | United States | Standard |
| 160 | 21045 | Columbia | Howard County | Maryland | United States | Standard | |
| 161 | 21075 | Elkridge | Howard County | Maryland | United States | Standard | |
| 162 | 21104 | Marriottsville | Howard County | Maryland | United States | Standard | |
| 163 | 21163 | Woodstock, Granite | Howard County | Maryland | United States | Standard | |
| 164 | 21723 | Cooksville | Howard County | Maryland | United States | Standard | |
| 165 | 21738 | Glenwood | Howard County | Maryland | United States | Standard | |
| 166 | 21794 | West Friendship | Howard County | Maryland | United States | Standard | |
| 167 | 21610 | Betterton | Kent County | Maryland | United States | Standard | |
| 168 | 21620 | Chestertown | Kent County | Maryland | United States | Standard | |
| 169 | 21645 | Kennedyville | Kent County | Maryland | United States | Standard | |
| 170 | 21650 | Massey | Kent County | Maryland | United States | Standard | |
| 171 | 21661 | Rock Hall | Kent County | Maryland | United States | Standard | |
| 172 | 21667 | Still Pond | Kent County | Maryland | United States | Standard | |
| 173 | 21678 | Worton, Lynch | Kent County | Maryland | United States | Standard | |
| 174 | 21607 | Barclay | Queen Anne’s County | Maryland | United States | Standard | |
| 175 | 21617 | Centreville | Queen Anne’s County | Maryland | United States | Standard | |
| 176 | 21619 | Chester | Queen Anne’s County | Maryland | United States | Standard | |
| 177 | 21623 | Church Hill | Queen Anne’s County | Maryland | United States | Standard | |
| 178 | 21628 | Crumpton | Queen Anne’s County | Maryland | United States | P.O Box | |
| 179 | 21638 | Grasonville | Queen Anne’s County | Maryland | United States | Standard | |
| 180 | 21644 | Ingleside | Queen Anne’s County | Maryland | United States | Standard | |
| 181 | 21657 | Queen Anne | Queen Anne’s County | Maryland | United States | Standard | |
| 182 | 21658 | Queenstown | Queen Anne’s County | Maryland | United States | Standard | |
| 183 | 21666 | Stevensville | Queen Anne’s County | Maryland | United States | Standard | |
| 184 | 21817 | Crisfield | Somerset County | Maryland | United States | Standard | |
| 185 | 21821 | Deal Island | Chance, Dames Quarter, Wenona | Somerset County | Maryland | United States | Standard |
| 186 | 21824 | Ewell | Somerset County | Maryland | United States | Standard | |
| 187 | 21853 | Princess Anne | Somerset County | Maryland | United States | Standard | |
| 188 | 21866 | Tylerton | Somerset County | Maryland | United States | P.O Box | |
| 189 | 21867 | Upper Fairmount | Somerset County | Maryland | United States | P.O Box | |
| 190 | 21871 | Westover | Somerset County | Maryland | United States | Standard | |
| 191 | 21890 | Westover | Somerset County | Maryland | United States | Standard | |
| 192 | 21601 | Easton | Talbot County | Maryland | United States | Standard | |
| 193 | 21612 | Bozman | Talbot County | Maryland | United States | Standard | |
| 194 | 21624 | Claiborne | Talbot County | Maryland | United States | P.O Box | |
| 195 | 21625 | Cordova | Talbot County | Maryland | United States | Standard | |
| 196 | 21647 | Mcdaniel | Talbot County | Maryland | United States | Standard | |
| 197 | 21652 | Neavitt | Talbot County | Maryland | United States | P.O Box | |
| 198 | 21653 | Newcomb | Talbot County | Maryland | United States | P.O Box | |
| 199 | 21654 | Oxford | Talbot County | Maryland | United States | Standard | |
| 200 | 21662 | Royal Oak | Talbot County | Maryland | United States | Standard | |
| 201 | 21663 | Saint Michaels | Talbot County | Maryland | United States | Standard | |
| 202 | 21665 | Sherwood | Talbot County | Maryland | United States | Standard | |
| 203 | 21671 | Tilghman | Talbot County | Maryland | United States | Standard | |
| 204 | 21673 | Trappe | Talbot County | Maryland | United States | Standard | |
| 205 | 21676 | Wittman | Talbot County | Maryland | United States | Standard | |
| 206 | 21679 | Wye Mills | Talbot County | Maryland | United States | Standard | |
| 207 | 21804 | Salisbury | Wicomico County | Maryland | United States | Standard | |
| 208 | 21810 | Allen | Wicomico County | Maryland | United States | P.O Box | |
| 209 | 21814 | Bivalve | Wicomico County | Maryland | United States | Standard | |
| 210 | 21822 | Eden | Wicomico County | Maryland | United States | Standard | |
| 211 | 21826 | Fruitland | Wicomico County | Maryland | United States | Standard | |
| 212 | 21830 | Hebron | Wicomico County | Maryland | United States | Standard | |
| 213 | 21840 | Nanticoke | Wicomico County | Maryland | United States | Standard | |
| 214 | 21856 | Quantico | Wicomico County | Maryland | United States | Standard | |
| 215 | 21865 | Tyaskin | Wicomico County | Maryland | United States | Standard | |
| 216 | 21811 | Berlin | Worcester County | Maryland | United States | Standard | |
| 217 | 21829 | Girdletree | Worcester County | Maryland | United States | Standard | |
| 218 | 21841 | Newark | Worcester County | Maryland | United States | Standard | |
| 219 | 21862 | Showell | Worcester County | Maryland | United States | Standard | |
| 220 | 21863 | Snow Hill | Worcester County | Maryland | United States | Standard | |
| 221 | 21521 | Barton | Allegany County | Maryland | United States | Standard | |
| 222 | 21539 | Lonaconing | Allegany County | Maryland | United States | Standard | |
| 223 | 21542 | Midland | Allegany County | Maryland | United States | P.O Box | |
| 224 | 21543 | Midlothian | Allegany County | Maryland | United States | P.O Box | |
| 225 | 21560 | Spring Gap | Allegany County | Maryland | United States | P.O Box | |
| 226 | 20601 | Waldorf | Charles County | Maryland | United States | Standard | |
| 227 | 20602 | Waldorf | Charles County | Maryland | United States | Standard | |
| 228 | 20603 | Waldorf | Charles County | Maryland | United States | Standard | |
| 229 | 20611 | Bel Alton | Charles County | Maryland | United States | Standard | |
| 230 | 20616 | Bryans Road | Charles County | Maryland | United States | Standard | |
| 231 | 20617 | Bryantown | Charles County | Maryland | United States | Standard | |
| 232 | 20622 | Charlotte Hall | Charles County | Maryland | United States | Standard | |
| 233 | 20625 | Cobb Island | Charles County | Maryland | United States | P.O Box | |
| 234 | 20632 | Faulkner | Charles County | Maryland | United States | Standard | |
| 235 | 20640 | Indian Head, Pisgah | Charles County | Maryland | United States | Standard | |
| 236 | 20645 | Issue, Swan Point | Charles County | Maryland | United States | Standard | |
| 237 | 20646 | La Plata, Dentsville | Charles County | Maryland | United States | Standard | |
| 238 | 20658 | Marbury, Rison | Charles County | Maryland | United States | Standard | |
| 239 | 20661 | Mount Victoria | Charles County | Maryland | United States | P.O Box | |
| 240 | 20662 | Nanjemoy | Charles County | Maryland | United States | Standard | |
| 241 | 20664 | Newburg | Charles County | Maryland | United States | Standard | |
| 242 | 20675 | Pomfret | Charles County | Maryland | United States | Standard | |
| 243 | 20677 | Port Tobacco | Charles County | Maryland | United States | Standard | |
| 244 | 20693 | Welcome | Charles County | Maryland | United States | Standard | |
| 245 | 20695 | White Plains | Charles County | Maryland | United States | Standard | |
| 246 | 21701 | Frederick, Lewistown | Frederick County | Maryland | United States | Standard | |
| 247 | 21702 | Frederick, Fort Detrick | Frederick County | Maryland | United States | Standard | |
| 248 | 21703 | Frederick | Frederick County | Maryland | United States | Standard | |
| 249 | 21704 | Frederick, Urbana | Frederick County | Maryland | United States | Standard | |
| 250 | 21705 | Frederick | Frederick County | Maryland | United States | P.O Box | |
| 251 | 21710 | Adamstown | Doubs | Frederick County | Maryland | United States | Standard |
| 252 | 21714 | Braddock Heights | Frederick County | Maryland | United States | P.O Box | |
| 253 | 21717 | Buckeystown | Frederick County | Maryland | United States | P.O Box | |
| 254 | 21718 | Burkittsville | Frederick County | Maryland | United States | Standard | |
| 255 | 21754 | Ijamsville | Frederick County | Maryland | United States | Standard | |
| 256 | 21762 | Libertytown | Frederick County | Maryland | United States | P.O Box | |
| 257 | 21769 | Middletown | Frederick County | Maryland | United States | Standard | |
| 258 | 21770 | Monrovia | Frederick County | Maryland | United States | Standard | |
| 259 | 21773 | Myersville | Frederick County | Maryland | United States | Standard | |
| 260 | 21774 | New Market | Frederick County | Maryland | United States | Standard | |
| 261 | 21777 | Point Of Rocks | Frederick County | Maryland | United States | Standard | |
| 262 | 21780 | Sabillasville | Frederick County | Maryland | United States | Standard | |
| 263 | 21788 | Thurmont | Graceham | Frederick County | Maryland | United States | Standard |
| 264 | 21793 | Walkersville | Frederick County | Maryland | United States | Standard | |
| 265 | 21798 | Woodsboro | Frederick County | Maryland | United States | Standard | |
| 266 | 21520 | Accident | Garrett County | Maryland | United States | Standard | |
| 267 | 21541 | Mc Henry | Sang Run | Garrett County | Maryland | United States | Standard |
| 268 | 20763 | Savage | Howard County | Maryland | United States | Standard | |
| 269 | 20777 | Highland | Howard County | Maryland | United States | Standard | |
| 270 | 20814 | Bethesda | Montgomery County | Maryland | United States | Standard | |
| 271 | 20817 | Bethesda | Westlake | Montgomery County | Maryland | United States | Standard |
| 272 | 20832 | Olney | Montgomery County | Maryland | United States | Standard | |
| 273 | 20838 | Barnesville | Montgomery County | Maryland | United States | Standard | |
| 274 | 20839 | Beallsville | Montgomery County | Maryland | United States | Standard | |
| 275 | 20841 | Boyds | Montgomery County | Maryland | United States | Standard | |
| 276 | 20850 | Rockville | Glen Hills, Rockshire, Woodley Garden, Potomac | Montgomery County | Maryland | United States | Standard |
| 277 | 20851 | Rockville | Twinbrook | Montgomery County | Maryland | United States | Standard |
| 278 | 20852 | Rockville | North Bethesda | Montgomery County | Maryland | United States | Standard |
| 279 | 20853 | Rockville | Montgomery County | Maryland | United States | Standard | |
| 280 | 20855 | Derwood | Rockville | Montgomery County | Maryland | United States | Standard |
| 281 | 20860 | Sandy Spring | Montgomery County | Maryland | United States | Standard | |
| 282 | 20861 | Ashton | Montgomery County | Maryland | United States | Standard | |
| 283 | 20862 | Brinklow | Montgomery County | Maryland | United States | Standard | |
| 284 | 20866 | Burtonsville | Montgomery County | Maryland | United States | Standard | |
| 285 | 20868 | Spencerville | Montgomery County | Maryland | United States | Standard | |
| 286 | 20871 | Clarksburg | Montgomery County | Maryland | United States | Standard | |
| 287 | 20872 | Damascus | Montgomery County | Maryland | United States | Standard | |
| 288 | 20876 | Germantown | Montgomery County | Maryland | United States | Standard | |
| 289 | 20877 | Gaithersburg, | Montgomery County | Maryland | United States | Standard | |
| 290 | 20878 | Gaithersburg | Montgomery County | Maryland | United States | Standard | |
| 291 | 20879 | Gaithersburg | Montgomery County | Maryland | United States | Standard | |
| 292 | 20880 | Washington Grove | Montgomery County | Maryland | United States | P.O Box | |
| 293 | 20886 | Montgomery Village | Montgomery County | Maryland | United States | Standard | |
| 294 | 20889 | Bethesda | Montgomery County | Maryland | United States | Standard | |
| 295 | 20892 | Bethesda | Montgomery County | Maryland | United States | Standard | |
| 296 | 20894 | Bethesda | Montgomery County | Maryland | United States | Standard | |
| 297 | 20895 | Kensington | Montgomery County | Maryland | United States | Standard | |
| 298 | 20896 | Garrett Park | Montgomery County | Maryland | United States | P.O Box | |
| 299 | 20899 | Gaithersburg | Montgomery County | Maryland | United States | Standard | |
| 300 | 20901 | Silver Spring | Takoma Park | Montgomery County | Maryland | United States | Standard |
| 301 | 20902 | Silver Spring | Wheaton | Montgomery County | Maryland | United States | Standard |
| 302 | 20903 | Silver Spring | Hillandale, New Hampshire Estates | Montgomery County | Maryland | United States | Standard |
| 303 | 20904 | Silver Spring | Colesville | Montgomery County | Maryland | United States | Standard |
| 304 | 20905 | Silver Spring | Colesville, Sandy Spring | Montgomery County | Maryland | United States | Standard |
| 305 | 20906 | Silver Spring | Aspen Hill | Montgomery County | Maryland | United States | Standard |
| 306 | 20910 | Silver Spring | Woodside Forest, Woodside Park | Montgomery County | Maryland | United States | Standard |
| 307 | 20912 | Silver Spring | Takoma Park | Montgomery County | Maryland | United States | Standard |
| 308 | 20607 | Accokeek | Prince George’s County | Maryland | United States | Standard | |
| 309 | 20623 | Cheltenham | Prince George’s County | Maryland | United States | Standard | |
| 310 | 20705 | Beltsville | Calverton | Prince George’s County | Maryland | United States | Standard |
| 311 | 20706 | Lanham | Glenarden, Lanham Seabrook | Prince George’s County | Maryland | United States | Standard |
| 312 | 20707 | Laurel | Carriage Hill | Prince George’s County | Maryland | United States | Standard |
| 313 | 20708 | Laurel | Montpelier, Snowden Pond | Prince George’s County | Maryland | United States | Standard |
| 314 | 20710 | Bladensburg | Prince George’s County | Maryland | United States | Standard | |
| 315 | 20720 | Bowie | Fairwood | Prince George’s County | Maryland | United States | Standard |
| 316 | 20721 | Bowie | Mitchellville, Woodmore | Prince George’s County | Maryland | United States | Standard |
| 317 | 20735 | Clinton | Prince George’s County | Maryland | United States | Standard | |
| 318 | 20737 | Riverdale | Riverdale Park | Prince George’s County | Maryland | United States | Standard |
| 319 | 20740 | College Park | Berwyn Heightm Hollywood, | Prince George’s County | Maryland | United States | Standard |
| 320 | 20742 | College Park | Prince George’s County | Maryland | United States | Standard | |
| 321 | 20744 | Fort Washington | Prince George’s County | Maryland | United States | Standard | |
| 322 | 20747 | District Height | Prince George’s County | Maryland | United States | Standard | |
| 323 | 20762 | Andrews Air Force Base | Prince George’s County | Maryland | United States | Standard | |
| 324 | 20769 | Glenn Dale | Prince George’s County | Maryland | United States | Standard | |
| 325 | 20770 | Greenbelt | Greenbelt | Prince George’s County | Maryland | United States | Standard |
| 326 | 20771 | Greenbelt | Prince George’s County | Maryland | United States | Standard | |
| 327 | 20782 | Hyattsville | Chillum, University Pa, University Park | Prince George’s County | Maryland | United States | Standard |
| 328 | 20783 | Hyattsville | Adelphi | Prince George’s County | Maryland | United States | Standard |
| 329 | 20784 | Hyattsville | Cheverly, Landover Hills, Landover | Prince George’s County | Maryland | United States | Standard |
| 330 | 20785 | Hyattsville, | Cheverly, Landover | Prince George’s County | Maryland | United States | Standard |
| 331 | 20606 | Abell | St. Mary’s County | Maryland | United States | Standard | |
| 332 | 20609 | Avenue | St. Mary’s County | Maryland | United States | Standard | |
| 333 | 20618 | Bushwood | St. Mary’s County | Maryland | United States | Standard | |
| 334 | 20620 | Callaway | St. Mary’s County | Maryland | United States | Standard | |
| 335 | 20621 | Chaptico, Maddox | St. Mary’s County | Maryland | United States | Standard | |
| 336 | 20624 | Clements | St. Mary’s County | Maryland | United States | Standard | |
| 337 | 20626 | Coltons Point | St. Mary’s County | Maryland | United States | Standard | |
| 338 | 20628 | Dameron | St. Mary’s County | Maryland | United States | Standard | |
| 339 | 20630 | Drayden | St. Mary’s County | Maryland | United States | Standard | |
| 340 | 20634 | Great Mills | St. Mary’s County | Maryland | United States | Standard | |
| 341 | 20650 | Leonardtown | St. Mary’s County | Maryland | United States | Standard | |
| 342 | 20656 | Loveville | St. Mary’s County | Maryland | United States | Standard | |
| 343 | 20660 | Morganza | St. Mary’s County | Maryland | United States | P.O Box | |
| 344 | 20667 | Park Hall | St. Mary’s County | Maryland | United States | Standard | |
| 345 | 20674 | Piney Point | St. Mary’s County | Maryland | United States | Standard | |
| 346 | 20680 | Ridge | St. Mary’s County | Maryland | United States | Standard | |
| 347 | 20684 | Saint Inigoes | St. Mary’s County | Maryland | United States | Standard | |
| 348 | 20686 | Saint Marys City | St. Mary’s County | Maryland | United States | P.O Box | |
| 349 | 20687 | Scotland | St. Mary’s County | Maryland | United States | Standard | |
| 350 | 20690 | Tall Timbers | St. Mary’s County | Maryland | United States | Standard | |
| 351 | 20692 | Valley Lee | St. Mary’s County | Maryland | United States | Standard | |
| 352 | 21713 | Boonsboro | Washington County | Maryland | United States | Standard | |
| 353 | 21715 | Brownsville | Washington County | Maryland | United States | P.O Box | |
| 354 | 21733 | Fairplay | Washington County | Maryland | United States | Standard | |
| 355 | 21734 | Funkstown | Washington County | Maryland | United States | P.O Box | |
| 356 | 21746 | Hagerstown | Washington County | Maryland | United States | Standard | |
| 357 | 21756 | Keedysville | Washington County | Maryland | United States | Standard | |
| 358 | 21767 | Maugansville | Washington County | Maryland | United States | Standard | |
| 359 | 21779 | Rohrersville | Gapland | Washington County | Maryland | United States | Standard |
| 360 | 21781 | Saint James | Washington County | Maryland | United States | P.O Box | |
| 361 | 21501 | Cumberland | Allegany County | Maryland | United States | P.O Box | |
| 362 | 21503 | Cumberland | Allegany County | Maryland | United States | P.O Box | |
| 363 | 21504 | Cumberland | Lavale | Allegany County | Maryland | United States | P.O Box |
| 364 | 21505 | Cumberland | Cresaptown | Allegany County | Maryland | United States | P.O Box |
| 365 | 21528 | Eckhart Mines | Allegany County | Maryland | United States | P.O Box | |
| 366 | 21556 | Pinto | Allegany County | Maryland | United States | P.O Box | |
| 367 | 20604 | Waldorf | Charles County | Maryland | United States | P.O Box | |
| 368 | 20643 | Ironsides | Charles County | Maryland | United States | P.O Box | |
| 369 | 20682 | Rock Point | Charles County | Maryland | United States | P.O Box | |
| 370 | 21709 | Frederick | Frederick County | Maryland | United States | Standard | |
| 371 | 21759 | Ladiesburg | Frederick County | Maryland | United States | P.O Box | |
| 372 | 21775 | New Midway | Frederick County | Maryland | United States | P.O Box | |
| 373 | 21792 | Unionville | Frederick County | Maryland | United States | P.O Box | |
| 374 | 20810 | Bethesda | Montgomery County | Maryland | United States | Standard | |
| 375 | 20811 | Bethesda | Montgomery County | Maryland | United States | Standard | |
| 376 | 20813 | Bethesda | Montgomery County | Maryland | United States | P.O Box | |
| 377 | 20824 | Bethesda | Montgomery County | Maryland | United States | P.O Box | |
| 378 | 20825 | Bethesda | Chevy Chase | Montgomery County | Maryland | United States | P.O Box |
| 379 | 20827 | Bethesda | Montgomery County | Maryland | United States | P.O Box | |
| 380 | 20830 | Olney | Montgomery County | Maryland | United States | P.O Box | |
| 381 | 20847 | Rockville | Montgomery County | Maryland | United States | P.O Box | |
| 382 | 20848 | Rockville | Montgomery County | Maryland | United States | P.O Box | |
| 383 | 20849 | Rockville | Montgomery County | Maryland | United States | P.O Box | |
| 384 | 20857 | Rockville | Montgomery County | Maryland | United States | Standard | |
| 385 | 20859 | Potomac, Rockville | Montgomery County | Maryland | United States | P.O Box | |
| 386 | 20875 | Germantown | Montgomery County | Maryland | United States | P.O Box | |
| 387 | 20883 | Gaithersburg | Montgomery County | Maryland | United States | P.O Box | |
| 388 | 20884 | Gaithersburg | Montgomery County | Maryland | United States | P.O Box | |
| 389 | 20885 | Gaithersburg | Montgomery County | Maryland | United States | P.O Box | |
| 390 | 20891 | Kensington | Montgomery County | Maryland | United States | P.O Box | |
| 391 | 20897 | Suburb Maryland | Montgomery County | Maryland | United States | Standard | |
| 392 | 20898 | Gaithersburg | Montgomery County | Maryland | United States | P.O Box | |
| 393 | 20907 | Silver Spring | Montgomery County | Maryland | United States | P.O Box | |
| 394 | 20908 | Silver Spring | Montgomery County | Maryland | United States | P.O Box | |
| 395 | 20911 | Silver Spring | Montgomery County | Maryland | United States | P.O Box | |
| 396 | 20913 | Takoma Park | Silver Spring | Montgomery County | Maryland | United States | P.O Box |
| 397 | 20914 | Silver Spring | Colesville | Montgomery County | Maryland | United States | P.O Box |
| 398 | 20915 | Silver Spring | Wheaton | Montgomery County | Maryland | United States | P.O Box |
| 399 | 20916 | Silver Spring | Aspen Hill | Montgomery County | Maryland | United States | P.O Box |
| 400 | 20918 | Silver Spring | Montgomery County | Maryland | United States | P.O Box | |
| 401 | 20993 | Silver Spring | Montgomery County | Maryland | United States | Standard | |
| 402 | 20997 | Silver Spring | Montgomery County | Maryland | United States | Standard | |
| 403 | 20697 | Southern Md Facility | Prince George’s County | Maryland | United States | Standard | |
| 404 | 20703 | Lanham | Prince George’s County | Maryland | United States | P.O Box | |
| 405 | 20704 | Beltsville | Prince George’s County | Maryland | United States | P.O Box | |
| 406 | 20709 | Laurel | Prince George’s County | Maryland | United States | P.O Box | |
| 407 | 20709 | Montpelier | Prince George’s County | Maryland | United States | P.O Box | |
| 408 | 20717 | Bowie | Mitchellville | Prince George’s County | Maryland | United States | P.O Box |
| 409 | 20718 | Bowie | Prince George’s County | Maryland | United States | P.O Box | |
| 410 | 20719 | Bowie | Prince George’s County | Maryland | United States | P.O Box | |
| 411 | 20725 | Laurel | Prince George’s County | Maryland | United States | P.O Box | |
| 412 | 20726 | Laurel | Prince George’s County | Maryland | United States | P.O Box | |
| 413 | 20731 | Capitol Height | Prince George’s County | Maryland | United States | P.O Box | |
| 414 | 20738 | Riverdale | Prince George’s County | Maryland | United States | P.O Box | |
| 415 | 20741 | College Park | Prince George’s County | Maryland | United States | P.O Box | |
| 416 | 20749 | Fort Washington | Prince George’s County | Maryland | United States | P.O Box | |
| 417 | 20750 | Oxon Hill | Prince George’s County | Maryland | United States | P.O Box | |
| 418 | 20752 | Suitland | Prince George’s County | Maryland | United States | P.O Box | |
| 419 | 20753 | District Heights | Prince George’s County | Maryland | United States | P.O Box | |
| 420 | 20757 | Temple Hills | Prince George’s County | Maryland | United States | P.O Box | |
| 421 | 20768 | Greenbelt | Prince George’s County | Maryland | United States | P.O Box | |
| 422 | 20773 | Upper Marlboro | Prince George’s County | Maryland | United States | P.O Box | |
| 423 | 20775 | Upper Marlboro | Prince George’s County | Maryland | United States | P.O Box | |
| 424 | 20787 | Hyattsville | Langley Park | Prince George’s County | Maryland | United States | P.O Box |
| 425 | 20788 | Hyattsville | West Hyattsville | Prince George’s County | Maryland | United States | P.O Box |
| 426 | 20790 | Capitol Heights | Prince George’s County | Maryland | United States | Standard | |
| 427 | 20791 | Capitol Heights | Prince George’s County | Maryland | United States | P.O Box | |
| 428 | 20792 | Upper Marlboro | Prince George’s County | Maryland | United States | P.O Box | |
| 429 | 20797 | Southern Md Facility | Prince George’s County | Maryland | United States | Standard | |
| 430 | 20799 | Capitol Heights | Prince George’s County | Maryland | United States | Standard | |
| 431 | 20635 | Helen | St Mary’s County | Maryland | United States | P.O Box | |
| 432 | 20627 | Compton | St. Mary’s County | Maryland | United States | P.O Box | |
| 433 | 21720 | Cavetown | Washington County | Maryland | United States | P.O Box | |
| 434 | 21721 | Chewsville | Washington County | Maryland | United States | P.O Box | |
| 435 | 21741 | Hagerstown | Washington County | Maryland | United States | P.O Box | |
| 436 | 21747 | Hagerstown | Washington County | Maryland | United States | P.O Box | |
| 437 | 21748 | Hagerstown | Washington County | Maryland | United States | Standard | |
| 438 | 21749 | Hagerstown | Washington County | Maryland | United States | Standard | |
| 439 | 21062 | Glen Burnie | Anne Arundel County | Maryland | United States | Standard | |
| 440 | 21098 | Hanover | Anne Arundel County | Maryland | United States | Standard | |
| 441 | 21098 | Household Bank | Anne Arundel County | Maryland | United States | Standard | |
| 442 | 21106 | Mayo | Anne Arundel County | Maryland | United States | P.O Box | |
| 443 | 21123 | Pasadena | Anne Arundel County | Maryland | United States | P.O Box | |
| 444 | 21123 | Lake Shore | Anne Arundel County | Maryland | United States | P.O Box | |
| 445 | 21123 | Riviera Beach | Anne Arundel County | Maryland | United States | P.O Box | |
| 446 | 21404 | Annapolis | Anne Arundel County | Maryland | United States | P.O Box | |
| 447 | 21411 | Annapolis | Anne Arundel County | Maryland | United States | Standard | |
| 448 | 21412 | Annapolis | Anne Arundel County | Maryland | United States | Standard | |
| 449 | 21203 | Baltimore | Baltimore City | Maryland | United States | P.O Box | |
| 450 | 21235 | Baltimore | Baltimore City | Maryland | United States | Standard | |
| 451 | 21241 | Baltimore | Baltimore City | Maryland | United States | Standard | |
| 452 | 21260 | Baltimore | Baltimore City | Maryland | United States | Standard | |
| 453 | 21261 | Baltimore | Essex | Baltimore City | Maryland | United States | Standard |
| 454 | 21263 | Baltimore | Baltimore City | Maryland | United States | Standard | |
| 455 | 21264 | Baltimore | Baltimore City | Maryland | United States | Standard | |
| 456 | 21265 | Baltimore | Baltimore City | Maryland | United States | Standard | |
| 457 | 21268 | Baltimore | Baltimore City | Maryland | United States | Standard | |
| 458 | 21270 | Baltimore | Baltimore City | Maryland | United States | P.O Box | |
| 459 | 21273 | Baltimore | Baltimore City | Maryland | United States | Standard | |
| 460 | 21274 | Baltimore | Baltimore City | Maryland | United States | Standard | |
| 461 | 21275 | Baltimore | Baltimore City | Maryland | United States | Standard | |
| 462 | 21278 | Baltimore | Baltimore City | Maryland | United States | Standard | |
| 463 | 21279 | Baltimore | Baltimore City | Maryland | United States | Standard | |
| 464 | 21280 | Baltimore | Baltimore City | Maryland | United States | Standard | |
| 465 | 21281 | Baltimore | Baltimore City | Maryland | United States | P.O Box | |
| 466 | 21282 | Baltimore | Pikesville | Baltimore City | Maryland | United States | P.O Box |
| 467 | 21283 | Baltimore, | Baltimore City | Maryland | United States | Standard | |
| 468 | 21284 | Baltimore | Towson | Baltimore City | Maryland | United States | P.O Box |
| 469 | 21288 | Baltimore | Baltimore City | Maryland | United States | Standard | |
| 470 | 21289 | Baltimore | Baltimore City | Maryland | United States | Standard | |
| 471 | 21290 | Baltimore | Baltimore City | Maryland | United States | Standard | |
| 472 | 21297 | Baltimore | Baltimore City | Maryland | United States | P.O Box | |
| 473 | 21298 | Baltimore | Baltimore City | Maryland | United States | Standard | |
| 474 | 21020 | Boring | Baltimore County | Maryland | United States | P.O Box | |
| 475 | 21022 | Brooklandville | Baltimore County | Maryland | United States | P.O Box | |
| 476 | 21022 | Brooklandvl | Baltimore County | Maryland | United States | P.O Box | |
| 477 | 21027 | Chase | Baltimore County | Maryland | United States | P.O Box | |
| 478 | 21065 | Hunt Valley | Baltimore County | Maryland | United States | Standard | |
| 479 | 21092 | Long Green | Baltimore County | Maryland | United States | P.O Box | |
| 480 | 21094 | Lutherville Timonium | Baltimore County | Maryland | United States | P.O Box | |
| 481 | 21139 | Riderwood | Baltimore County | Maryland | United States | P.O Box | |
| 482 | 20610 | Barstow | Calvert County | Maryland | United States | P.O Box | |
| 483 | 21609 | Bethlehem | Caroline County | Maryland | United States | P.O Box | |
| 484 | 21670 | Templeville | Caroline County | Maryland | United States | P.O Box | |
| 485 | 21681 | Ridgely | Caroline County | Maryland | United States | Standard | |
| 486 | 21682 | Ridgely | Caroline County | Maryland | United States | Standard | |
| 487 | 21683 | Ridgely | Caroline County | Maryland | United States | Standard | |
| 488 | 21684 | Ridgely | Caroline County | Maryland | United States | Standard | |
| 489 | 21685 | Ridgely | Caroline County | Maryland | United States | Standard | |
| 490 | 21686 | Ridgely | Caroline County | Maryland | United States | Standard | |
| 491 | 21687 | Ridgely | Caroline County | Maryland | United States | Standard | |
| 492 | 21688 | Ridgely | Caroline County | Maryland | United States | Standard | |
| 493 | 21088 | Lineboro | Carroll County | Maryland | United States | P.O Box | |
| 494 | 21088 | Manchester | Carroll County | Maryland | United States | P.O Box | |
| 495 | 21916 | Childs | Cecil County | Maryland | United States | P.O Box | |
| 496 | 21922 | Elkton | Cecil County | Maryland | United States | P.O Box | |
| 497 | 21018 | Benson | Harford County | Maryland | United States | P.O Box | |
| 498 | 20588 | Dhs | Howard County | Maryland | United States | Standard | |
| 499 | 20588 | Camp Springs | Howard County | Maryland | United States | Standard | |
| 500 | 20588 | Cheltenham | Howard County | Maryland | United States | Standard | |
| 501 | 20588 | Columbia | Howard County | Maryland | United States | Standard | |
| 502 | 21041 | Ellicott City | Howard County | Maryland | United States | P.O Box | |
| 503 | 21150 | Simpsonville | Howard County | Maryland | United States | P.O Box | |
| 504 | 21765 | Lisbon | Howard County | Maryland | United States | P.O Box | |
| 505 | 21690 | Chestertown | Kent County | Maryland | United States | Standard | |
| 506 | 21656 | Price | Queen Anne’s County | Maryland | United States | P.O Box | |
| 507 | 21656 | Church Hill | Queen Anne’s County | Maryland | United States | ||
| 508 | 21836 | Manokin | Somerset County | Maryland | United States | P.O Box | |
| 509 | 21857 | Rehobeth | Somerset County | Maryland | United States | P.O Box | |
| 510 | 21606 | Easton | Talbot County | Maryland | United States | Standard | |
| 511 | 21802 | Salisbury | Wicomico County | Maryland | United States | P.O Box | |
| 512 | 21803 | Salisbury | Wicomico County | Maryland | United States | P.O Box | |
| 513 | 21852 | Powellville | Wicomico County | Maryland | United States | P.O Box | |
| 514 | 21843 | Ocean City | Worcester County | Maryland | United States | P.O Box | |
| 515 | 21502 | Cumberland | Allegany County | Maryland | United States | Standard | |
| 516 | 21502 | Cresaptown | Allegany County | Maryland | United States | Standard | |
| 517 | 21502 | Lavale | Allegany County | Maryland | United States | Standard | |
| 518 | 21524 | Corriganville | Allegany County | Maryland | United States | P.O Box | |
| 519 | 21529 | Ellerslie | Allegany County | Maryland | United States | P.O Box | |
| 520 | 21530 | Flintstone | Allegany County | Maryland | United States | Standard | |
| 521 | 21532 | Frostburg | Allegany County | Maryland | United States | Standard | |
| 522 | 21540 | Luke | Allegany County | Maryland | United States | Standard | |
| 523 | 21540 | Westernport | Allegany County | Maryland | United States | Standard | |
| 524 | 21545 | Mount Savage | Allegany County | Maryland | United States | Standard | |
| 525 | 21555 | Oldtown | Allegany County | Maryland | United States | Standard | |
| 526 | 21557 | Rawlings | Allegany County | Maryland | United States | Standard | |
| 527 | 21562 | Westernport | Allegany County | Maryland | United States | Standard | |
| 528 | 21562 | Mccoole | Allegany County | Maryland | United States | Standard | |
| 529 | 21766 | Little Orleans | Allegany County | Maryland | United States | Standard | |
| 530 | 20701 | Annapolis Junction | Anne Arundel County | Maryland | United States | Standard | |
| 531 | 20711 | Lothian | Anne Arundel County | Maryland | United States | Standard | |
| 532 | 20724 | Laurel | Anne Arundel County | Maryland | United States | Standard | |
| 533 | 20724 | Maryland City | Anne Arundel County | Maryland | United States | Standard | |
| 534 | 20724 | Md City | Anne Arundel County | Maryland | United States | Standard | |
| 535 | 20724 | Russett | Anne Arundel County | Maryland | United States | Standard | |
| 536 | 20755 | Fort George | Anne Arundel County | Maryland | United States | Standard | |
| 537 | 20755 | Fort Meade | Anne Arundel County | Maryland | United States | Standard | |
| 538 | 20758 | Friendship | Anne Arundel County | Maryland | United States | Standard | |
| 539 | 20764 | Shady Side | Anne Arundel County | Maryland | United States | Standard | |
| 540 | 20765 | Galesville | Anne Arundel County | Maryland | United States | P.O Box | |
| 541 | 20776 | Harwood | Anne Arundel County | Maryland | United States | Standard | |
| 542 | 20778 | West River | Anne Arundel County | Maryland | United States | Standard | |
| 543 | 21035 | Davidsonville | Anne Arundel County | Maryland | United States | Standard | |
| 544 | 21054 | Gambrills | Anne Arundel County | Maryland | United States | Standard | |
| 545 | 21113 | Odenton | Anne Arundel County | Maryland | United States | Standard | |
| 546 | 21114 | Crofton | Anne Arundel County | Maryland | United States | Standard | |
| 547 | 21053 | Freeland | Baltimore County | Maryland | United States | Standard | |
| 548 | 21120 | Parkton | Baltimore County | Maryland | United States | Standard | |
| 549 | 21120 | Bentley Springs | Baltimore County | Maryland | United States | Standard | |
| 550 | 20639 | Huntingtown | Calvert County | Maryland | United States | Standard | |
| 551 | 20657 | Lusby | Calvert County | Maryland | United States | Standard | |
| 552 | 20678 | Prince Frederick | Calvert County | Maryland | United States | Standard | |
| 553 | 20678 | Dares Beach | Calvert County | Maryland | United States | Standard | |
| 554 | 20685 | Saint Leonard | Calvert County | Maryland | United States | Standard | |
| 555 | 20688 | Solomons, Dowell | Calvert County | Maryland | United States | Standard | |
| 556 | 20714 | North Beach | Calvert County | Maryland | United States | Standard | |
| 557 | 20714 | Holland Point | Calvert County | Maryland | United States | Standard | |
| 558 | 20714 | Rose Haven | Calvert County | Maryland | United States | Standard | |
| 559 | 20732 | Chesapeake Beach | Calvert County | Maryland | United States | Standard | |
| 560 | 20736 | Owings | Calvert County | Maryland | United States | Standard | |
| 561 | 20754 | Dunkirk | Calvert County | Maryland | United States | Standard | |
| 562 | 21629 | Denton | Caroline County | Maryland | United States | Standard | |
| 563 | 21632 | Federalsburg | Caroline County | Maryland | United States | Standard | |
| 564 | 21636 | Goldsboro | Caroline County | Maryland | United States | Standard | |
| 565 | 21639 | Greensboro | Caroline County | Maryland | United States | Standard | |
| 566 | 21640 | Henderson | Caroline County | Maryland | United States | Standard | |
| 567 | 21649 | Marydel | Caroline County | Maryland | United States | Standard | |
| 568 | 21102 | Manchester | Carroll County | Maryland | United States | Standard | |
| 569 | 21102 | Lineboro | Carroll County | Maryland | United States | Standard | |
| 570 | 21102 | Millers | Carroll County | Maryland | United States | Standard | |
| 571 | 21158 | Westminster | Carroll County | Maryland | United States | Standard | |
| 572 | 21776 | New Windsor | Carroll County | Maryland | United States | Standard | |
| 573 | 21787 | Taneytown | Carroll County | Maryland | United States | Standard | |
| 574 | 21791 | Union Bridge | Carroll County | Maryland | United States | Standard | |
| 575 | 21791 | Linwood | Carroll County | Maryland | United States | Standard | |
| 576 | 21911 | Rising Sun | Cecil County | Maryland | United States | Standard | |
| 577 | 21912 | Warwick | Cecil County | Maryland | United States | Standard | |
| 578 | 21915 | Chesapeake City | Cecil County | Maryland | United States | Standard | |
| 579 | 21918 | Conowingo | Cecil County | Maryland | United States | Standard | |
| 580 | 21921 | Elkton | Cecil County | Maryland | United States | Standard | |
| 581 | 20612 | Benedict | Charles County | Maryland | United States | P.O Box | |
| 582 | 20637 | Hughesville | Charles County | Maryland | United States | Standard | |
| 583 | 21716 | Brunswick | Frederick County | Maryland | United States | Standard | |
| 584 | 21727 | Emmitsburg | Frederick County | Maryland | United States | Standard | |
| 585 | 21755 | Jefferson | Frederick County | Maryland | United States | Standard | |
| 586 | 21755 | Detour | Frederick County | Maryland | United States | Standard | |
| 587 | 21755 | Middleburg | Frederick County | Maryland | United States | Standard | |
| 588 | 21757 | Keymar | Frederick County | Maryland | United States | Standard | |
| 589 | 21758 | Knoxville | Frederick County | Maryland | United States | Standard | |
| 590 | 21758 | Brunswick | Frederick County | Maryland | United States | Standard | |
| 591 | 21771 | Mount Airy | Frederick County | Maryland | United States | Standard | |
| 592 | 21778 | Rocky Ridge | Frederick County | Maryland | United States | Standard | |
| 593 | 21790 | Tuscarora | Frederick County | Maryland | United States | Standard | |
| 594 | 21522 | Bittinger | Garrett County | Maryland | United States | Standard | |
| 595 | 21523 | Bloomington | Garrett County | Maryland | United States | Standard | |
| 596 | 21531 | Friendsville | Garrett County | Maryland | United States | Standard | |
| 597 | 21536 | Grantsville | Garrett County | Maryland | United States | Standard | |
| 598 | 21536 | Jennings | Garrett County | Maryland | United States | Standard | |
| 599 | 21538 | Kitzmiller | Garrett County | Maryland | United States | Standard | |
| 600 | 21538 | Shallmar | Garrett County | Maryland | United States | Standard | |
| 601 | 21550 | Oakland | Garrett County | Maryland | United States | Standard | |
| 602 | 21550 | Crellin | Garrett County | Maryland | United States | Standard | |
| 603 | 21550 | Deer Park | Garrett County | Maryland | United States | Standard | |
| 604 | 21550 | Hutton | Garrett County | Maryland | United States | Standard | |
| 605 | 21550 | Loch Lyn | Garrett County | Maryland | United States | Standard | |
| 606 | 21550 | Swanton | Garrett County | Maryland | United States | Standard | |
| 607 | 21132 | Pylesville | Harford County | Maryland | United States | Standard | |
| 608 | 21160 | Whiteford | Harford County | Maryland | United States | Standard | |
| 609 | 21160 | Cardiff | Harford County | Maryland | United States | Standard | |
| 610 | 21161 | White Hall | Harford County | Maryland | United States | Standard | |
| 611 | 20723 | Laurel | Howard County | Maryland | United States | Standard | |
| 612 | 20723 | Scaggsville | Howard County | Maryland | United States | Standard | |
| 613 | 20759 | Fulton | Howard County | Maryland | United States | Standard | |
| 614 | 20794 | Jessup | Howard County | Maryland | United States | Standard | |
| 615 | 21029 | Clarksville | Howard County | Maryland | United States | Standard | |
| 616 | 21036 | Dayton | Howard County | Maryland | United States | Standard | |
| 617 | 21044 | Columbia | Howard County | Maryland | United States | Standard | |
| 618 | 21046 | Columbia | Howard County | Maryland | United States | Standard | |
| 619 | 21737 | Glenelg | Howard County | Maryland | United States | Standard | |
| 620 | 21797 | Woodbine | Howard County | Maryland | United States | Standard | |
| 621 | 21635 | Galena, Golts | Kent County | Maryland | United States | Standard | |
| 622 | 21651 | Millington | Kent County | Maryland | United States | Standard | |
| 623 | 20812 | Glen Echo | Montgomery County | Maryland | United States | Standard | |
| 624 | 20815 | Chevy Chase | Montgomery County | Maryland | United States | Standard | |
| 625 | 20815 | Bethesda | Montgomery County | Maryland | United States | ||
| 626 | 20815 | Chevy Chase Village | Montgomery County | Maryland | United States | ||
| 627 | 20816 | Bethesda | Montgomery County | Maryland | United States | Standard | |
| 628 | 20818 | Cabin John | Montgomery County | Maryland | United States | Standard | |
| 629 | 20833 | Brookeville | Montgomery County | Maryland | United States | Standard | |
| 630 | 20837 | Poolesville | Montgomery County | Maryland | United States | Standard | |
| 631 | 20842 | Dickerson | Montgomery County | Maryland | United States | Standard | |
| 632 | 20854 | Potomac | Montgomery County | Maryland | United States | Standard | |
| 633 | 20854 | Rockville | Montgomery County | Maryland | United States | Standard | |
| 634 | 20874 | Germantown | Montgomery County | Maryland | United States | Standard | |
| 635 | 20874 | Darnestown | Montgomery County | Maryland | United States | Standard | |
| 636 | 20882 | Gaithersbur | Montgomery County | Maryland | United States | Standard | |
| 637 | 20882 | Brookeville | Montgomery County | Maryland | United States | Standard | |
| 638 | 20882 | Laytonsville | Montgomery County | Maryland | United States | Standard | |
| 639 | 20608 | Aquasco | Prince George’s County | Maryland | United States | Standard | |
| 640 | 20608 | Eagle Harbor | Prince George’s County | Maryland | United States | Standard | |
| 641 | 20613 | Brandywine | Prince George’s County | Maryland | United States | Standard | |
| 642 | 20712 | Mount Rainier | Prince George’s County | Maryland | United States | Standard | |
| 643 | 20715 | Bowie | Prince George’s County | Maryland | United States | Standard | |
| 644 | 20716 | Bowie | Prince George’s County | Maryland | United States | Standard | |
| 645 | 20716 | Mitchellville | Prince George’s County | Maryland | United States | Standard | |
| 646 | 20722 | Brentwood | Prince George’s County | Maryland | United States | Standard | |
| 647 | 20722 | Colmar Manor | Prince George’s County | Maryland | United States | Standard | |
| 648 | 20722 | , Cottage City | Prince George’s County | Maryland | United States | Standard | |
| 649 | 20722 | N Brentwood | Prince George’s County | Maryland | United States | Standard | |
| 650 | 20743 | Capitol Heights | Prince George’s County | Maryland | United States | Standard | |
| 651 | 20743 | Fairmount Heights | Prince George’s County | Maryland | United States | Standard | |
| 652 | 20745 | Oxon Hill | Prince George’s County | Maryland | United States | Standard | |
| 653 | 20745 | Forest Heights | Prince George’s County | Maryland | United States | Standard | |
| 654 | 20746 | Suitland | Prince George’s County | Maryland | United States | Standard | |
| 655 | 20748 | Temple Hills | Prince George’s County | Maryland | United States | Standard | |
| 656 | 20748 | Camp Springs | Prince George’s County | Maryland | United States | Standard | |
| 657 | 20748 | Hillcrest Heights | Prince George’s County | Maryland | United States | Standard | |
| 658 | 20748 | Hillcrest | Prince George’s County | Maryland | United States | Standard | |
| 659 | 20772 | Upper Marlboro | Prince George’s County | Maryland | United States | Standard | |
| 660 | 20774 | Glenarden | Prince George’s County | Maryland | United States | Standard | |
| 661 | 20774 | Kettering | Prince George’s County | Maryland | United States | Standard | |
| 662 | 20774 | Largo | Prince George’s County | Maryland | United States | Standard | |
| 663 | 20774 | Springdale | Prince George’s County | Maryland | United States | Standard | |
| 664 | 20781 | Hyattsville | Prince George’s County | Maryland | United States | Standard | |
| 665 | 21668 | Sudlersville | Queen Anne’s County | Maryland | United States | Standard | |
| 666 | 21838 | Marion Station | Somerset County | Maryland | United States | Standard | |
| 667 | 20619 | California | St. Mary’s County | Maryland | United States | Standard | |
| 668 | 20636 | Hollywood | St. Mary’s County | Maryland | United States | Standard | |
| 669 | 20653 | Lexington Park | St. Mary’s County | Maryland | United States | Standard | |
| 670 | 20659 | Mechanicsville | St. Mary’s County | Maryland | United States | Standard | |
| 671 | 20670 | Patuxent River | St. Mary’s County | Maryland | United States | Standard | |
| 672 | 21711 | Big Pool | Washington County | Maryland | United States | Standard | |
| 673 | 21719 | Cascade | Washington County | Maryland | United States | Standard | |
| 674 | 21719 | Fort Ritchie | Washington County | Maryland | United States | Standard | |
| 675 | 21719 | Highfield | Washington County | Maryland | United States | Standard | |
| 676 | 21722 | Clear Spring | Washington County | Maryland | United States | Standard | |
| 677 | 21722 | Big Spring | Washington County | Maryland | United States | Standard | |
| 678 | 21740 | Hagerstown | Washington County | Maryland | United States | Standard | |
| 679 | 21742 | Hagerstown | Washington County | Maryland | United States | Standard | |
| 680 | 21750 | Hancock | Washington County | Maryland | United States | Standard | |
| 681 | 21782 | Sharpsburg | Washington County | Maryland | United States | Standard | |
| 682 | 21783 | Smithsburg | Washington County | Maryland | United States | Standard | |
| 683 | 21795 | Williamsport | Washington County | Maryland | United States | Standard | |
| 684 | 21801 | Salisbury | Wicomico County | Maryland | United States | Standard | |
| 685 | 21837 | Mardela Springs | Wicomico County | Maryland | United States | Standard | |
| 686 | 21849 | Parsonsburg | Wicomico County | Maryland | United States | Standard | |
| 687 | 21850 | Pittsville | Wicomico County | Maryland | United States | Standard | |
| 688 | 21861 | Sharptown | Wicomico County | Maryland | United States | P.O Box | |
| 689 | 21874 | Willards | Wicomico County | Maryland | United States | Standard | |
| 690 | 21875 | Delmar | Wicomico County | Maryland | United States | Standard | |
| 691 | 21813 | Bishopville | Worcester County | Maryland | United States | Standard | |
| 692 | 21842 | Ocean City | Worcester County | Maryland | United States | Standard | |
| 693 | 21851 | Pocomoke City | Worcester County | Maryland | United States | Standard | |
| 694 | 21864 | Stockton | Worcester County | Maryland | United States | Standard | |
| 695 | 21872 | Whaleyville | Worcester County | Maryland | United States | Standard | |
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