94531   Zip Code Antioch Contra Costa CA United States

City Antioch
County Contra Costa
State California
Latitude 37.95665
Longitude -121.77777
Population 46,387
Density 3307.77 people per square mile
Time Zone America/Los Angeles
  • All demographic data comes from the 2024 American Community Survey (5-year study).
  • Learn more about each field.
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Household Income

Median household: $120,927
Median individual: $49,944

Race

Mode: 26.0% White

Gender

 51.7% female 

Rent

  $3150 / month  

Median house value: $701,241.0

Age

Median: 38.8 years old

Education

With at least college degree: 32.2%
With STEM degree: 52.7%

Marital Status

 48.9% married 

Never married: 37.4%

Labor Force Participation

 66.1% working 

Unemployed: 7.2%

Average Family Size

 3.53 people 

Commute Time

 44.2 minutes 

Health Care

 4.0% uninsured 

Poverty

 8.3%

All data comes from the SimpleMaps US Zips Comprehensive Database, February 2026.

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