Find the last 4 digits (ZIP+4) for an address in 94550

ZIP 94550, Livermore, CA is filled in. Just type the street address.

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ZIP Code 94550 – Livermore, CA

Livermore, California · Alameda County · Pacific time

ZIP code94550
CityLivermore
StateCalifornia
CountyAlameda CountySanta Clara County
Population49,873
Time zonePacific · local time
ZIP typeStandard (has a Census ZCTA area)
Land area271.98 sq mi
Center (lat, long)37.5200, -121.5756

Area codes in this area

925510341

These are the area codes that most often serve ZIP 94550 (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

95377 Tracy · 11.1 mi95140 Mount Hamilton · 12.2 mi95378 Tracy · 13.3 mi95132 San Jose · 13.6 mi95304 Tracy · 15.4 mi95127 San Jose · 15.4 mi94586 Sunol · 15.5 mi95376 Tracy · 16.8 mi

About ZIP 94550

ZIP code 94550 is assigned to Livermore, California. It crosses 2 counties; most of its land is in Alameda County. Its Census area covers about 271.98 square miles of land. The closest neighboring ZIP is 95377 (Tracy), about 11.1 miles away.

Every address in 94550 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