Find the last 4 digits (ZIP+4) for an address in 94587

ZIP 94587, Union City, CA is filled in. Just type the street address.

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ZIP Code 94587 – Union City, CA

Union City, California · Alameda County · Pacific time

ZIP code94587
CityUnion City
StateCalifornia
CountyAlameda County
Population67,464
Time zonePacific · local time
ZIP typeStandard (has a Census ZCTA area)
Land area19.63 sq mi
Center (lat, long)37.5900, -122.0752

Area codes in this area

510341

These are the area codes that most often serve ZIP 94587 (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

94544 Hayward · 3.2 mi94555 Fremont · 3.2 mi94545 Hayward · 3.8 mi94542 Hayward · 5.3 mi94536 Fremont · 5.3 mi94543 Hayward · 5.4 mi94541 Hayward · 5.8 mi94560 Newark · 6.4 mi

About ZIP 94587

ZIP code 94587 is assigned to Union City, California. It lies in Alameda County. Its Census area covers about 19.63 square miles of land. The closest neighboring ZIP is 94544 (Hayward), about 3.2 miles away.

Every address in 94587 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