Find the last 4 digits (ZIP+4) for an address in 94583

ZIP 94583, San Ramon, CA is filled in. Just type the street address.

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ZIP Code 94583 – San Ramon, CA

San Ramon, California · Contra Costa County · Pacific time

ZIP code94583
CitySan Ramon
StateCalifornia
CountyContra Costa County
Population39,583
Time zonePacific · local time
ZIP typeStandard (has a Census ZCTA area)
Land area21.24 sq mi
Center (lat, long)37.7717, -121.9898

Area codes in this area

925

These are the area codes that most often serve ZIP 94583 (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

94570 Moraga · 1.9 mi94526 Danville · 3 mi94582 San Ramon · 4.1 mi94552 Castro Valley · 4.7 mi94528 Diablo · 5.1 mi94506 Danville · 5.3 mi94507 Alamo · 5.8 mi94568 Dublin · 6.2 mi

About ZIP 94583

ZIP code 94583 is assigned to San Ramon, California. It lies in Contra Costa County. Its Census area covers about 21.24 square miles of land. The closest neighboring ZIP is 94570 (Moraga), about 1.9 miles away.

Every address in 94583 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