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Antioch, CA ZIP Codes

Antioch, California has 2 ZIP codes: 2 for street addresses ( and ).

Your street decides which one you use.

Which Antioch ZIP code is my address in?

Street ranges from the Census Bureau, 2026. PO box and organization ZIP codes are not found by street. A new street may be missing: address not found?

Antioch ZIP code map

ZIP code map of Antioch, CA2 ZIP code areas in Antioch: 94509, 94531. Dashed line: Antioch city limits. Grey areas: neighboring towns.94509945319450994531BrentwoodPittsburgOakleyRio VistaClayton9450994531BrentwoodPittsburgOakleyRio Vista

Tap or point to an area to see its ZIP code.Full-size map

Dashed line: Antioch city limits.

Map: Census Bureau ZIP Code Tabulation Areas (2020) and place limits (2024).

All Antioch ZIP codes by type

ZIPType and post office or station
94509street delivery
Antioch
94531street delivery
Antioch

Antioch ZIP code questions

What is the main ZIP code for Antioch?

94509, the ZIP code of the main Antioch post office at 2730 W Tregallas Rd.

What county is Antioch in?

Contra Costa County.

ZIP codes for towns near Antioch

Brentwood, CA1 ZIP code: 94513 · 5 milesPittsburg, CA1 ZIP code: 94565 · 6 milesOakley, CA1 ZIP code: 94561 · 6 milesConcord, CA9 ZIP codes: 94518, 94519, 94520 and more · 11 milesWalnut Creek, CA4 ZIP codes: 94595, 94596, 94597 and more · 14 milesDanville, CA2 ZIP codes: 94506, 94526 · 15 miles

More towns near Antioch: Pleasant Hill, San Ramon, Martinez, Dublin, Livermore, Pleasanton, Fairfield, Castro Valley, Tracy.

Sources and last checked

USPS ZIP Locale Detail (October 1, 2026), GeoNames (CC BY 4.0), U.S. Census Bureau, HUD-USPS crosswalk.

Checked October 20, 2026. Sources · How we build our lists · Corrections