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ZIP Code Database - Facts & Stats

Data Last Updated: May 1, 2022

ZIP Codes for City of Union City, CA

Union City, CA Covers 1 ZIP Code

ZIP CodeTypeCountyPopulationArea Code(s)
ZIP Code 94587StandardAlameda69,516510 / 341

Timezone(s):Pacific (GMT -08:00)
Counties:ALAMEDA, CA
Population:69,516 (More Details)
Male Population:34,318
Female Population:35,198
Median Age:36
ZIP Codes:1
Area Codes:2
Total Area:821 square miles (county)
Land Area:739 square miles (county)
Water Area:82 square miles (county)

Union City, CA Demographic Information *

Total population69,516
Male population34,318
Female population35,198
Median age (years)36.2
White Population16,640
Black Population4,402
Indian Population329
Asian Population35,363
Hawaiian Population892
Hispanic Population15,895
Median age (Male)34.9
Median age (Female)37.5
Total households20,433
Family households (families)16,677
Average household size3.38
Average family size3.69
Total housing units21,258
* Demographic data is based on 2010 Census. Products


  1. U.S. Postal Service [Last Updated: 5/1/2022],
  2. Internal Data Creation [Last Updated: 5/1/2022],
  3. U.S. Geological Survey [Updated as needed],
  4. U.S. Census [Updated Yearly],
  5. U.S. Census 2010 [Decennial] [Last Updated: 1/1/2010],