Find the last 4 digits (ZIP+4) for an address in 21157

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ZIP Code 21157 – Westminster, MD

Westminster, Maryland · Carroll County · Eastern time

ZIP code21157
CityWestminster
StateMaryland
CountyCarroll County
Population38,984
Time zoneEastern · local time
ZIP typeStandard (has a Census ZCTA area)
Land area77.69 sq mi
Center (lat, long)39.5486, -76.9836

Area codes in this area

227240301

These are the area codes that most often serve ZIP 21157 (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

21048 Finksburg · 4.6 mi21776 New Windsor · 6.5 mi21158 Westminster · 7.8 mi21074 Hampstead · 9.2 mi21155 Upperco · 9.6 mi21020 Boring · 9.7 mi21784 Sykesville · 10.2 mi21071 Glyndon · 10.2 mi

About ZIP 21157

ZIP code 21157 is assigned to Westminster, Maryland. It lies in Carroll County. Its Census area covers about 77.69 square miles of land. The closest neighboring ZIP is 21048 (Finksburg), about 4.6 miles away.

Every address in 21157 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