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ZIP Code Database - Facts & Stats

Data Last Updated: May 1, 2022

ZIP Codes for City of Oakley, CA

Oakley, CA Covers 1 ZIP Code

ZIP CodeTypeCountyPopulationArea Code(s)
ZIP Code 94561StandardContra Costa36,515925

Timezone(s):Pacific (GMT -08:00)
Population:35,432 (More Details)
Male Population:17,605
Female Population:17,827
Median Age:32
ZIP Codes:1
Area Codes:1
Total Area:804 square miles (county)
Land Area:723 square miles (county)
Water Area:81 square miles (county)

Oakley, CA Demographic Information *

Total population35,432
Male population17,605
Female population17,827
Median age (years)32
White Population22,641
Black Population2,582
Indian Population314
Asian Population2,236
Hawaiian Population142
Hispanic Population12,364
Median age (Male)31.3
Median age (Female)32.6
Total households10,727
Family households (families)8,651
Average household size3.29
Average family size3.62
Total housing units11,484
* 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],