Antioch ZIP Codes

List of Zip Codes of Antioch

The following table lists ZIP Codes associated with Antioch, California, based on ZIP Code Tabulation Area (ZCTA) data from the U.S. Census Bureau.

S.N.	Zip Code	Latitude	Longitude	County	Population	Density
1	94509	37.99214	-121.8142	Contra Costa	71,013	1571.8
2	94531	37.95665	-121.77777	Contra Costa	44,746	1231.6

About Antioch California Zip Codes

The city of Antioch in California (CA) is served by approximately 2 ZIP Codes. These codes cover residential neighborhoods, business districts, and surrounding localities that use the city name in their mailing address.

Based on ZIP-level population estimates, the combined population covered by these ZIP Codes is around 115,759 people. Population density can vary significantly from one ZIP Code to another, reflecting the mix of dense urban blocks, commercial corridors, and lower-density residential areas.

The ZIP Codes associated with Antioch fall within county jurisdictions such as Contra Costa. Each county manages local services, land use, and administration for the areas corresponding to its ZIP Codes.

Most ZIP codes for Antioch, California follow the America/Los_Angeles time zone.

Antioch ZIP Codes

List of Zip Codes of Antioch

About Antioch California Zip Codes

California Cities ZIP Codes

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