Alameda County, CA Zip Codes
50 zip codes across 20 cities in Alameda County, CA
About Alameda County
Alameda County, California (CA) contains 50 unique zip codes spanning 20 cities and communities. Each zip code covers a different area within the county, with varying demographics, income levels, and housing markets.
Browse the complete list below to find detailed population, income, home values, cost of living, and climate data for any zip code in Alameda County.
Cities in Alameda County
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All Zip Codes in Alameda County, CA
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Frequently Asked Questions
How many zip codes are in Alameda County, CA?
Alameda County, CA has 50 zip codes across 20 cities.
What cities are in Alameda County?
Cities in Alameda County include Alameda, Albany, Berkeley, Castro Valley, Dublin, Emeryville, Fremont, Hayward, Livermore, Newark, Oakland, Pleasanton, San Leandro, San Lorenzo, Sunol, Union City, Zcta 945hh, Zcta 945xx, Zcta 946hh, Zcta 947hh.
What state is Alameda County in?
Alameda County is located in California (CA).
All demographic data on this page is sourced from the U.S. Census Bureau American Community Survey (ACS) 5-Year Estimates. ZIP code boundary and delivery data is sourced from the United States Postal Service (USPS). Data is updated periodically and may not reflect the most current figures. Census Bureau ZIP Code Tabulation Areas (ZCTAs) may differ slightly from USPS ZIP code boundaries.