Find the last 4 digits (ZIP+4) for an address in 94621

ZIP 94621, Oakland, CA is filled in. Just type the street address.

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ZIP Code 94621 – Oakland, CA

Oakland, California · Alameda County · Pacific time

ZIP code94621
CityOakland
StateCalifornia
CountyAlameda County
Population33,840
Time zonePacific · local time
ZIP typeStandard (has a Census ZCTA area)
Land area8.51 sq mi
Center (lat, long)37.7511, -122.2102

Area codes in this area

510341

These are the area codes that most often serve ZIP 94621 (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

94614 Oakland · 1.6 mi94601 Oakland · 1.8 mi94502 Alameda · 1.8 mi94603 Oakland · 2.1 mi94613 Oakland · 2.5 mi94577 San Leandro · 3.3 mi94605 Oakland · 3.3 mi94606 Oakland · 3.3 mi

About ZIP 94621

ZIP code 94621 is assigned to Oakland, California. It lies in Alameda County. Its Census area covers about 8.51 square miles of land. The closest neighboring ZIP is 94614 (Oakland), about 1.6 miles away.

Every address in 94621 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