Data Last Updated: May 1, 2023

ZIP Codes for City of Antioch, CA


    
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Counties:	CONTRA COSTA, CA
Area Code(s):	925
Timezone(s):	Pacific (GMT -08:00)
City Population:	102,372 (More Details)
CBSA:	San Francisco-Oakland-Berkeley, CA
Congressional District(s):	08, 10
Land Area:	723 square miles (county)
Water Area:	81 square miles (county)

2 ZIP Codes

Antioch, CA ZIP Code Boundaries

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Antioch, CA Covers 2 ZIP Codes

ZIP Code	Type	Population	% of Population	Aliases
94509	Standard	62,439	60.78%
94531	Standard	40,290	39.22%

Antioch, CA Demographic Information *

Total population**	102,372
Male population	49,807
Female population	52,565
Median age (years)	33.8
White Population	50,083
Black Population	17,667
Indian Population	887
Asian Population	10,709
Hawaiian Population	817
Hispanic Population	32,436
Median age (Male)	32.4
Median age (Female)	35
Total households	32,252
Family households (families)	25,023
Average household size	3.15
Average family size	3.52
Total housing units	34,849

* Demographic data is based on 2010 Census for the City of ANTIOCH.
** City and ZIP Code Population will not be equal due to differences in their geographies.

References

U.S. Postal Service [Last Updated: 2/1/2023], https://www.usps.com
ZIP-Codes.com Internal Data Creation [Last Updated: 2/1/2023], https://www.zip-codes.com
U.S. Geological Survey [Updated as needed], https://www.usgs.gov/
U.S. Census [Updated Yearly], https://www.census.gov
U.S. Census 2010 [Decennial] [Last Updated: 1/1/2010], https://www.census.gov