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ZIP Code Database - Facts & Stats

Data Last Updated: June 1, 2023

ZIP Codes for City of Clayton, CA

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Area Code(s):925
Timezone(s):Pacific (GMT -08:00)
City Population:10,897 (More Details)
CBSA:San Francisco-Oakland-Berkeley, CA
Congressional District(s):10
Land Area:723 square miles (county)
Water Area:81 square miles (county)

1 ZIP Code

Clayton, CA ZIP Code Boundaries

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Clayton, CA Covers 1 ZIP Code

ZIP CodeTypePopulation% of PopulationAliases

Clayton, CA Demographic Information *

Total population**10,897
Male population5,262
Female population5,635
Median age (years)45
White Population9,273
Black Population146
Indian Population34
Asian Population717
Hawaiian Population16
Hispanic Population982
Median age (Male)44.6
Median age (Female)45.4
Total households4,006
Family households (families)3,208
Average household size2.72
Average family size3.04
Total housing units4,086
* Demographic data is based on 2010 Census for the City of CLAYTON.
** City and ZIP Code Population will not be equal due to differences in their geographies.


  1. U.S. Postal Service [Last Updated: 2/1/2023],
  2. Internal Data Creation [Last Updated: 2/1/2023],
  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],