US location post office
Maryland ZIP Codes
| ZIP Code | Type | City | County | County Code |
|---|---|---|---|---|
| 21669 | POBox | Taylors Island | Dorchester | 24019 |
| 21671 | Standard | Tilghman | Talbot | 24041 |
| 21672 | Standard | Toddville | Dorchester | 24019 |
| 21673 | Standard | Trappe | Talbot | 24041 |
| 21675 | Standard | Wingate | Dorchester | 24019 |
| 21676 | Standard | Wittman | Talbot | 24041 |
| 21677 | Standard | Woolford | Dorchester | 24019 |
| 21678 | Standard | Worton | Kent | 24029 |
| 21679 | Standard | Wye Mills | Talbot | 24041 |
| 21701 | Standard | Frederick | Frederick | 24021 |
| 21702 | Standard | Frederick | Frederick | 24021 |
| 21703 | Standard | Frederick | Frederick | 24021 |
| 21704 | Standard | Frederick | Frederick | 24021 |
| 21705 | POBox | Frederick | Frederick | 24021 |
| 21710 | Standard | Adamstown | Frederick | 24021 |
| 21711 | Standard | Big Pool | Washington | 24043 |
| 21713 | Standard | Boonsboro | Washington | 24043 |
| 21714 | POBox | Braddock Heights | Frederick | 24021 |
| 21716 | Standard | Brunswick | Frederick | 24021 |
| 21717 | POBox | Buckeystown | Frederick | 24021 |
| 21718 | Standard | Burkittsville | Frederick | 24021 |
| 21719 | Standard | Cascade | Washington | 24043 |
| 21722 | Standard | Clear Spring | Washington | 24043 |
| 21723 | Standard | Cooksville | Howard | 24027 |
| 21727 | Standard | Emmitsburg | Frederick | 24021 |
| 21733 | Standard | Fairplay | Washington | 24043 |
| 21734 | POBox | Funkstown | Washington | 24043 |
| 21737 | Standard | Glenelg | Howard | 24027 |
| 21738 | Standard | Glenwood | Howard | 24027 |
| 21740 | Standard | Hagerstown | Washington | 24043 |
| 21742 | Standard | Hagerstown | Washington | 24043 |
| 21746 | Unique | Hagerstown | Washington | 24043 |
| 21750 | Standard | Hancock | Washington | 24043 |
| 21754 | Standard | Ijamsville | Frederick | 24021 |
| 21755 | Standard | Jefferson | Frederick | 24021 |
| 21756 | Standard | Keedysville | Washington | 24043 |
| 21757 | Standard | Keymar | Frederick | 24021 |
| 21758 | Standard | Knoxville | Frederick | 24021 |
| 21762 | POBox | Libertytown | Frederick | 24021 |
| 21766 | Standard | Little Orleans | Allegany | 24001 |
| 21767 | Standard | Maugansville | Washington | 24043 |
| 21769 | Standard | Middletown | Frederick | 24021 |
| 21770 | Standard | Monrovia | Frederick | 24021 |
| 21771 | Standard | Mount Airy | Frederick | 24021 |
| 21773 | Standard | Myersville | Frederick | 24021 |
| 21774 | Standard | New Market | Frederick | 24021 |
| 21776 | Standard | New Windsor | Carroll | 24013 |
| 21777 | Standard | Point of Rocks | Frederick | 24021 |
| 21778 | Standard | Rocky Ridge | Frederick | 24021 |
| 21779 | Standard | Rohrersville | Washington | 24043 |
Maryland Cities & Towns
- Baltimore(23)
- Silver Spring(7)
- Frederick(5)
- Gaithersburg(5)
- Hyattsville(5)
- Annapolis(5)
- Laurel(4)
- Bowie(4)
- Rockville(4)
- Waldorf(3)
- Hagerstown(3)
- Bethesda(3)
- Salisbury(3)
- Columbia(3)
- Towson(3)
- Upper Marlboro(2)
- Ellicott City(2)
- Bel Air(2)
- Glen Burnie(2)
- Westminster(2)
- Westover(2)
- College Park(2)
- Germantown(2)
- Pylesville(1)
- Girdletree(1)
- Chestertown(1)
- Lexington Park(1)
- Cumberland(1)
- Elkridge(1)
- Odenton(1)
- Rosedale(1)
- Halethorpe(1)
- Warwick(1)
- Conowingo(1)
- Maryland Line(1)
- Perryman(1)
- Fort Howard(1)
- Indian Head(1)
- Smithsburg(1)
- Woodbine(1)
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