Find the last 4 digits (ZIP+4) for an address in 21046

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ZIP Code 21046 – Columbia, MD

Columbia, Maryland · Howard County · Eastern time

ZIP code21046
CityColumbia
StateMaryland
CountyHoward County
Population15,608
Time zoneEastern · local time
ZIP typeStandard (has a Census ZCTA area)
Land area7.81 sq mi
Center (lat, long)39.1741, -76.8354

Area codes in this area

410443667

These are the area codes that most often serve ZIP 21046 (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

21045 Columbia · 2.2 mi20763 Savage · 2.7 mi20794 Jessup · 2.7 mi20723 Laurel · 3.1 mi21044 Columbia · 3.2 mi20701 Annapolis Junction · 3.8 mi21075 Elkridge · 5 mi20709 Laurel · 5.2 mi

About ZIP 21046

ZIP code 21046 is assigned to Columbia, Maryland. It lies in Howard County. Its Census area covers about 7.81 square miles of land. The closest neighboring ZIP is 21045 (Columbia), about 2.2 miles away.

Every address in 21046 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