Antioch, CA ZIP Codes

Mailing address format for Antioch

John Smith
123 Main St
ANTIOCH CA 94509
USA

USPS prefers capital letters without punctuation. Check the exact ZIP+4 for a street address on the USPS website.

All ZIP codes in Antioch

ZIP Code Tabulation Areas (ZCTA), U.S. Census Bureau. A ZCTA can cover parts of more than one town.

Where is Antioch? Location, county and time zone

State

California

County

Contra Costa County

GPS coordinates

37.97842, -121.79835

Elevation

43 ft (13 m)

Time zone

America/Los AngelesPST · UTC-08:00

Population

115,291

Map of Antioch, CA 94509

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Antioch Street View

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ZIP codes near Antioch

• Brentwood, CA
  945135.2 mi
• Pittsburg, CA
  945656.2 mi
• Oakley, CA
  94561, 945486.4 mi
• Clayton, CA
  945217.6 mi
• Knightsen, CA
  945488.2 mi
• Bay Point, CA
  945659.7 mi
• Bethel Island, CA
  945119.8 mi
• Concord, CA
  94519, 94598, 94521, 9452011.1 mi
• Byron, CA
  9450511.1 mi
• North Gate, CA
  9459812.0 mi
• Discovery Bay, CA
  9450512.0 mi
• Diablo, CA
  9452812.8 mi

Antioch ZIP code: FAQ