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ZIP Code 94531
Antioch, CA, Contra Costa County
Population
46,387
Land area
14sq mi
People per sq mi
3,307
City
Antioch
ZIP 94531 and nearby ZIP codes
ZIP 94531 at a glance
- ZIP 94531 (Antioch) is about 13 times as dense as California as a whole.
- The median household income is $120,927, 22% above the California median of $99,122.
- A typical owner-occupied home is valued at $701,600 (5% below California) and median rent is $3,150 a month.
Local data for ZIP 94531
Counts from official public data
Housing and community stats
ZIP 94531, American Community Survey 2020-2024
Median household income
$120,927
Poverty rate
8.3%
Median home value
$701,600
Prices -5.9% in a year
Median rent
$3,150/mo
Homeownership
73.2%
Bachelor's or higher
32.3%
Median age
38.8
Average commute
44.2 min
Economy and federal money
Businesses, pandemic loans and political donations
Business establishments
559
ZIP Business Patterns 2023
Employees
7,748
$517M annual payroll
PPP loans
$37.2M
1,144 loans
Campaign donations
$76.6K
30% D, 20% R, 2026 cycle
Environment and hazard risk
ZIP 94531, from FEMA, NOAA and EPA
Natural hazard risk
Very High
Top: earthquake
Storm events since 1996
472
Countywide, mostly strong wind
Flood insurance policies
2,681
0.9% of homes, county
July high / Jan low
91° / 40°F
12.6 inches of rain a year
Health statistics
Share of adults in ZIP 94531, CDC PLACES estimates
Obesity
30.8%
U.S. 33.3% -2.5 pts
Diabetes
12.1%
U.S. 12.1% about the same
Smoking
10.6%
U.S. 12.8% -2.2 pts
Uninsured (18-64)
8.5%
U.S. 11.1% -2.6 pts
Frequently asked questions
- What city is ZIP code 94531?
- ZIP code 94531 is in Antioch, CA (Contra Costa County).
- What county is ZIP code 94531 in?
- ZIP code 94531 is mostly in Contra Costa County, California.
- How many people live in ZIP code 94531?
- About 46,387 people live in the 94531 ZIP Code Tabulation Area, based on American Community Survey 5-year estimates.
Source: U.S. Census Bureau (ZIP Code Tabulation Areas, American Community Survey) · Data as of 12/31/2023. ZIP Code Tabulation Areas closely match, but are not identical to, USPS ZIP code delivery areas.