Find the last 4 digits (ZIP+4) for an address in 94603

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ZIP Code 94603 – Oakland, CA

Oakland, California · Alameda County · Pacific time

ZIP code94603
CityOakland
StateCalifornia
CountyAlameda County
Population35,742
Time zonePacific · local time
ZIP typeStandard (has a Census ZCTA area)
Land area2.7 sq mi
Center (lat, long)37.7393, -122.1755

Area codes in this area

510341

These are the area codes that most often serve ZIP 94603 (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

94577 San Leandro · 1.6 mi94614 Oakland · 1.8 mi94621 Oakland · 2.1 mi94605 Oakland · 2.1 mi94613 Oakland · 2.9 mi94601 Oakland · 3.4 mi94502 Alameda · 3.5 mi94578 San Leandro · 3.5 mi

About ZIP 94603

ZIP code 94603 is assigned to Oakland, California. It lies in Alameda County. Its Census area covers about 2.7 square miles of land. The closest neighboring ZIP is 94577 (San Leandro), about 1.6 miles away.

Every address in 94603 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