Find the last 4 digits (ZIP+4) for an address in 21133

ZIP 21133, Randallstown, MD is filled in. Just type the street address.

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ZIP Code 21133 – Randallstown, MD

Randallstown, Maryland · Baltimore County · Eastern time

ZIP code21133
CityRandallstown
StateMaryland
CountyBaltimore County
Population31,398
Time zoneEastern · local time
ZIP typeStandard (has a Census ZCTA area)
Land area8.96 sq mi
Center (lat, long)39.3784, -76.8113

Area codes in this area

410443667

These are the area codes that most often serve ZIP 21133 (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

21163 Woodstock · 3.4 mi21244 Windsor Mill · 3.5 mi21117 Owings Mills · 3.9 mi21136 Reisterstown · 4.6 mi21208 Pikesville · 4.7 mi21282 Pikesville · 4.7 mi21104 Marriottsville · 5.8 mi21207 Gwynn Oak · 6.2 mi

About ZIP 21133

ZIP code 21133 is assigned to Randallstown, Maryland. It lies in Baltimore County. Its Census area covers about 8.96 square miles of land. The closest neighboring ZIP is 21163 (Woodstock), about 3.4 miles away.

Every address in 21133 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