Alameda County ZIP Codes (94501 – 94850) – California

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Alameda County is located in the western part of the state of California, within the San Francisco Bay Area. ZIP codes in Alameda County range from 94501 to 94850 and are administered by the United States Postal Service (USPS) to support accurate mail delivery, logistics, and address identification across cities, neighborhoods, and unincorporated communities.

Key Information About Alameda County ZIP Codes

ItemDetails
CountyAlameda County
StateCalifornia
ZIP Code Range94501 – 94850
County SeatOakland
Largest CityOakland
CountryUnited States
ContinentNorth America
Postal AuthorityUnited States Postal Service (USPS)

ZIP Codes of Alameda County by City & Community

For more details on ZIP codes in Alameda County, see the tables of cities, neighborhoods, communities, corridors, and notable places below.

Oakland Area ZIP Codes (94601 – 94621, 94702)

Place / LocationZIP CodeState
Downtown Oakland94607California
Uptown Oakland94612California
West Oakland94607California
East Oakland94601California
North Oakland94609California
Fruitvale District94601California
Temescal94609California
Rockridge94618California
Montclair94611California
Piedmont Avenue Corridor94611California
International Blvd Corridor94601California
MacArthur Blvd Corridor94602California
San Antonio District94601California
Dimond District94602California
Mills College Area94605California
Lake Merritt Area94610California
Jack London Square94607California
Elmhurst District94621California
Coliseum Area94621California

Berkeley Area ZIP Codes (94702 – 94710)

Place / LocationZIP CodeState
Downtown Berkeley94704California
UC Berkeley Campus94720California
North Berkeley94709California
South Berkeley94703California
West Berkeley94710California
Elmwood District94705California
Claremont Hills94705California
Telegraph Avenue Corridor94704California
Shattuck Avenue Corridor94709California

Alameda City Area ZIP Codes (94501 – 94502)

Place / LocationZIP CodeState
Alameda City94501California
Bay Farm Island94502California
South Shore94501California
Alameda Naval Air Station Area94501California
Webster Street Corridor94501California
Park Street Corridor94501California

Fremont Area ZIP Codes (94536 – 94555)

Place / LocationZIP CodeState
Central Fremont94538California
North Fremont94536California
South Fremont94539California
Mission San Jose94539California
Warm Springs District94539California
Irvington District94538California
Niles District94536California
Auto Mall Parkway Corridor94538California

Hayward Area ZIP Codes (94541 – 94545)

Place / LocationZIP CodeState
Downtown Hayward94541California
South Hayward94544California
Fairview Area94541California
Harder-Tennyson94544California
Industrial Parkway Corridor94545California
Mission Boulevard Corridor94544California

San Leandro Area ZIP Codes (94577 – 94579)

Place / LocationZIP CodeState
Downtown San Leandro94577California
North San Leandro94577California
South San Leandro94578California
Bay-O-Vista94577California
East 14th Street Corridor94578California
Washington Avenue Corridor94577California

Livermore Area ZIP Codes (94550 – 94551)

Place / LocationZIP CodeState
Downtown Livermore94550California
South Livermore94550California
Springtown District94550California
Isabel Avenue Corridor94551California
Vineyard Corridor94550California

Pleasanton Area ZIP Codes (94566 – 94588)

Place / LocationZIP CodeState
Downtown Pleasanton94566California
Stoneridge Area94588California
Hacienda Business Park94588California
Foothill Road Corridor94566California
Bernal Avenue Corridor94566California

Union City & Newark Combined Area ZIP Codes (94587 – 94560)

Place / LocationZIP CodeState
Union City94587California
Newark94560California
Ardenwood Area94560California
Decoto District94587California
Thornton Avenue Corridor94560California

Castro Valley & Unincorporated Areas ZIP Codes (94546 – 94552)

Place / LocationZIP CodeState
Castro Valley94546California
Fairmont Terrace94541California
Five Canyons94552California
Redwood Road Corridor94546California
Crow Canyon Road Corridor94552California

About Alameda County ZIP Codes

Each ZIP code in Alameda County corresponds to cities, neighborhoods, commercial corridors, residential zones, and unincorporated communities. From Oakland’s dense urban core to the suburban cities of Fremont, Pleasanton, and Livermore, using the correct ZIP code ensures accurate mail delivery, emergency response, business operations, and location identification.