Frederick County, Maryland
28 ZIP codes · 660.63 sq mi of land · FIPS 24021
| Population | 287,048 |
|---|---|
| State | Maryland |
| FIPS code | 24021 |
| Time zone | Eastern |
| Land area | 660.63 sq mi |
| Center (lat, long) | 39.4702, -77.3976 |
Area codes in this area
These are the area codes that most often serve Frederick County (including overlays). The exact area code depends on the phone number — landlines, mobiles and overlays can differ even on the same street.
Cities and towns (largest first)
Frederick · 83,395AdamstownBraddock HeightsBrunswickBuckeystownBurkittsvilleEmmitsburgIjamsvilleJeffersonKnoxvilleLibertytownMiddletownMonroviaMount AiryMyersvilleNew MarketPoint Of RocksRocky RidgeSabillasvilleThurmontTuscaroraUnion BridgeWalkersvilleWoodsboro
ZIP codes in Frederick County
21701 Frederick21702 Frederick21703 Frederick21704 Frederick21705 Frederick21710 Adamstown21714 Braddock Heights21716 Brunswick21717 Buckeystown21718 Burkittsville21727 Emmitsburg21754 Ijamsville21755 Jefferson21758 Knoxville21762 Libertytown21769 Middletown21770 Monrovia21771 Mount Airy21773 Myersville21774 New Market21777 Point Of Rocks21778 Rocky Ridge21780 Sabillasville21788 Thurmont21790 Tuscarora21791 Union Bridge21793 Walkersville21798 Woodsboro
Population: U.S. Census Bureau, ACS 5-year estimates, 2024.