Find the last 4 digits (ZIP+4) for an address in 94588

ZIP 94588, Pleasanton, CA is filled in. Just type the street address.

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ZIP Code 94588 – Pleasanton, CA

Pleasanton, California · Alameda County · Pacific time

ZIP code94588
CityPleasanton
StateCalifornia
CountyAlameda CountyContra Costa County
Population34,328
Time zonePacific · local time
ZIP typeStandard (has a Census ZCTA area)
Land area32.74 sq mi
Center (lat, long)37.7926, -121.8628

Area codes in this area

925

These are the area codes that most often serve ZIP 94588 (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

94506 Danville · 2.4 mi94582 San Ramon · 3.4 mi94570 Moraga · 5.2 mi94568 Dublin · 5.7 mi94528 Diablo · 6.2 mi94526 Danville · 6.8 mi94551 Livermore · 6.8 mi94517 Clayton · 7 mi

About ZIP 94588

ZIP code 94588 is assigned to Pleasanton, California. It crosses 2 counties; most of its land is in Alameda County. Its Census area covers about 32.74 square miles of land. The closest neighboring ZIP is 94506 (Danville), about 2.4 miles away.

Every address in 94588 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