Find the last 4 digits (ZIP+4) for an address in 21755

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ZIP Code 21755 – Jefferson, MD

Jefferson, Maryland · Frederick County · Eastern time

ZIP code21755
CityJefferson
StateMaryland
CountyFrederick County
Population5,909
Time zoneEastern · local time
ZIP typeStandard (has a Census ZCTA area)
Land area34.32 sq mi
Center (lat, long)39.3597, -77.5681

Area codes in this area

227240301

These are the area codes that most often serve ZIP 21755 (including overlays). The exact area code depends on the phone number — landlines, mobiles and overlays can differ even on the same street.

Map

Nearby ZIP codes

21718 Burkittsville · 3.9 mi21716 Brunswick · 4.3 mi21714 Braddock Heights · 4.7 mi21758 Knoxville · 4.8 mi21703 Frederick · 5.1 mi21715 Brownsville · 5.1 mi21769 Middletown · 5.7 mi21777 Point Of Rocks · 5.9 mi

About ZIP 21755

ZIP code 21755 is assigned to Jefferson, Maryland. It lies in Frederick County. Its Census area covers about 34.32 square miles of land. The closest neighboring ZIP is 21718 (Burkittsville), about 3.9 miles away.

Every address in 21755 also has a 4-digit add-on code (ZIP+4) that points to a smaller delivery area. Use the box above to find it.

Sources: US Census Bureau (ZCTA, county relationship files), GeoNames (CC BY 4.0), NANPA via NumberResearch.org (CC BY 4.0). Map © OpenStreetMap contributors. ZIP areas are approximate. Population: U.S. Census Bureau, ACS 5-year estimates, 2024 (ZCTA). Data sources