Find the last 4 digits (ZIP+4) for an address in 94551

ZIP 94551, Livermore, CA is filled in. Just type the street address.

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ZIP Code 94551 – Livermore, CA

Livermore, California · Alameda County · Pacific time

ZIP code94551
CityLivermore
StateCalifornia
CountyAlameda CountyContra Costa County
Population37,885
Time zonePacific · local time
ZIP typeStandard (has a Census ZCTA area)
Land area82.74 sq mi
Center (lat, long)37.7505, -121.7492

Area codes in this area

925

These are the area codes that most often serve ZIP 94551 (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

94588 Pleasanton · 6.8 mi94514 Byron · 8.1 mi95391 Tracy · 8.5 mi94568 Dublin · 8.6 mi94566 Pleasanton · 8.9 mi94582 San Ramon · 9.1 mi94506 Danville · 9.2 mi94537 Fremont · 10.6 mi

About ZIP 94551

ZIP code 94551 is assigned to Livermore, California. It crosses 2 counties; most of its land is in Alameda County. Its Census area covers about 82.74 square miles of land. The closest neighboring ZIP is 94588 (Pleasanton), about 6.8 miles away.

Every address in 94551 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