ZIP Code Tabulation Area · California

ZIP Code 94531: Antioch, CA

ZIP Code 94531 (Antioch, Contra Costa County, California) has an estimated 46,387 residents in 13,905 households. The median household income is $120,927, the median home value is $701,600 and the median gross rent is $3,150/mo. Figures are U.S. Census Bureau American Community Survey 2020–2024 5-year estimates for the matching ZIP Code Tabulation Area.

American Community Survey 2020–2024 5-year estimates · Updated

Total population

46,387

Margin of error ±1,913

Median household income

$120,927

Margin of error ±$6,683

Median home value

$701,600

Margin of error ±$21,071

Median gross rent

$3,150/mo

Margin of error ±$97

Median age

38.8 yrs

Margin of error ±2.0 yrs

Mean travel time to work

44.2 min

Margin of error ±4.1 min

How ZIP 94531 compares with California and the U.S.

State and national figures are the Census Bureau's own estimates for those areas from the same ACS release, not averages of ZIP codes.

Median age

ZIP 9453138.8 yrsCalifornia37.9 yrsUnited States38.9 yrs

Median household income

ZIP 94531$120,927California$99,122United States$80,734

Per capita income

ZIP 94531$46,240California$49,513United States$44,673

Poverty rate

ZIP 945318.3%California12.0%United States12.5%

Unemployment rate

ZIP 945317.2%California6.6%United States5.2%

Bachelor's degree or higher

ZIP 9453132.3%California37.1%United States35.7%

Median home value

ZIP 94531$701,600California$734,700United States$332,700

Median gross rent

ZIP 94531$3,150/moCalifornia$2,036/moUnited States$1,413/mo

Owner-occupied homes

ZIP 9453173.2%California55.9%United States65.2%

Mean travel time to work

ZIP 9453144.2 minCalifornia28.7 minUnited States26.4 min

Worked from home

ZIP 9453117.7%California17.2%United States15.1%

All figures for ZIP 94531

Each estimate has a 90% margin of error: the true value is likely within that range. * marks estimates with a large margin of error (a coefficient of variation above 30%, or ±10 percentage points or more for rates).

ZIP 94531 — ACS 2020–2024 5-year estimates
MeasureZIP 94531Margin of errorCaliforniaUnited States
Total population46,387±1,91339,287,377334,922,499
Median age38.8 yrs±2.0 yrs37.9 yrs38.9 yrs
Households13,905±60113,548,091129,227,496
Median household income$120,927±$6,683$99,122$80,734
Per capita income$46,240±$2,731$49,513$44,673
Poverty rate8.3%±2.2 pts12.0%12.5%
Unemployment rate7.2%±2.3 pts6.6%5.2%
Bachelor's degree or higher32.3%±2.7 pts37.1%35.7%
Median home value$701,600±$21,071$734,700$332,700
Median gross rent$3,150/mo±$97$2,036/mo$1,413/mo
Owner-occupied homes73.2%±3.3 pts55.9%65.2%
Mean travel time to work44.2 min±4.1 min28.7 min26.4 min
Worked from home17.7%±2.6 pts17.2%15.1%

Race and Hispanic or Latino origin

Shares of the total population by the Census Bureau's race and Hispanic or Latino origin categories (table B03002), listed in the Census Bureau's order. People self-identify on the survey.

Population by race and Hispanic or Latino origin, ZIP 94531
GroupZIP 94531CaliforniaUnited States
White alone, not Hispanic or Latino23.1%33.8%57.4%
Black or African American alone, not Hispanic or Latino24.7%5.2%11.9%
American Indian and Alaska Native alone, not Hispanic or Latino0.3%0.3%0.5%
Asian alone, not Hispanic or Latino20.7%15.3%5.9%
Native Hawaiian and Other Pacific Islander alone, not Hispanic or Latino0.2%0.3%0.2%
Some other race alone, not Hispanic or Latino0.8%0.6%0.6%
Two or more races, not Hispanic or Latino6.7%4.4%4.3%
Hispanic or Latino (of any race)23.6%40.2%19.3%

Where ZIP 94531 is

State
California
Main county
Contra Costa County
Largest overlapping place
Antioch (89% of the ZIP's land area)
Land area
14.03 sq mi· about 3,306 people per sq mi

County and place names come from the Census Bureau's 2020 ZCTA relationship files. A ZIP code's mailing city, set by the U.S. Postal Service, can differ from these names.

Other ZIP codes in Contra Costa County

94505 Discovery Bay, CA94506 Blackhawk, CA94507 Alamo, CA94509 Antioch, CA94511 Bethel Island, CA94513 Contra Costa County, CA94514 Contra Costa County, CA94516 Contra Costa County, CA94517 Contra Costa County, CA94518 Concord, CA94519 Concord, CA94520 Concord, CA94521 Concord, CA94523 Pleasant Hill, CA94525 Crockett, CA94526 Danville, CA94528 Diablo, CA94530 El Cerrito, CA94547 Hercules, CA94548 Knightsen, CA94549 Lafayette, CA94553 Martinez, CA94556 Moraga, CA94561 Oakley, CA

See every ZIP code in California, or compare ZIP 94531 with another ZIP code.

Census figures describe residents as a group and cannot tell you about any one home or street. For a specific address, check local government and housing records.

About ZIP codes and ZCTAs: the Census Bureau publishes statistics for ZIP Code Tabulation Areas, which approximate USPS ZIP code delivery areas. Learn how they differ.

Sources

  • U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, detailed tables B01003, B01002, B11001, B19013, B19301, B17001, B23025, B15003, B25077, B25064, B25003, B08013, B08303, B08301, B03002 — snapshot Oct 26, 2026.
  • U.S. Census Bureau, 2020 ZCTA5 relationship files (county and place).
  • Data: U.S. Census Bureau, American Community Survey 5-year estimates (detailed tables) and 2020 Census ZCTA relationship files. This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau. These agencies do not endorse OpenZIP.