Zip code 94531: Antioch, California

Q: What city is zip code 94531?

94531 is assigned to Antioch, California. The city name is the one the Postal Service prefers for mail addressed to this zip code.

Q: What county is 94531 in?

94531 is in Contra Costa County, California.

Q: What is the population of 94531?

About 46,387 people live in 94531, according to the Census Bureau's American Community Survey.

Q: What is the median household income in 94531?

The median household income in 94531 is $120,927.

Q: What zip codes are near 94531?

The closest zip codes to 94531 are 94509, 94513, 94561, 94548, 94517.

Residential delivery areaContra Costa CountyPacific Time

Population

46,387

Median household income

$121K

U.S. $81K

Median home value

$702K

U.S. $333K

Median rent

$3,150/mo

U.S. $1,413

Median age

38.8

U.S. 38.9

Land area

14 sq mi

3,307 people/sq mi

Boundary is the Census Bureau's ZIP Code Tabulation Area, which closely tracks the postal delivery area.

About 94531

94531 is an urban zip code in Antioch, California (Contra Costa County), covering 14 sq mi of land. About 46,387 people live here, or 3,307 per square mile. The median resident is 38.8 years old, compared with 38.9 nationally.

The median household earns $120,927 a year, 50% above the national median of $80,734. 8.3% of residents live below the poverty line (U.S.: 12.5%). A typical home is valued at $701,600, or 5.8 years of median household income (U.S.: 4.1 years), which makes homes relatively expensive for local earners. 73% of occupied homes are lived in by their owners, and renters pay a median of $3,150 a month.

32% of adults hold a bachelor's degree or higher (U.S.: 36%). Commuters average 44.2 minutes each way, and 18% of workers work from home. The most common jobs among working residents are in office and administrative support; healthcare; and management. 47% of households speak a language other than English at home, most often Spanish.

How 94531 compares

Sorted from highest to lowest national percentile

Median gross rent$3,150
99th
U.S. $1,413 · CA $2,03690th of 1,464 in CA
Average commute44.2 min
99th
WeaknessU.S. 26.4 min · CA 28.7 min57th of 1,584 in CA
Diversity index78.3
99th
U.S. 61.4 · CA 69.72nd of 1,688 in CA
Broadband access96.9%
92nd
StrengthU.S. 91% · CA 93.5%293rd of 1,662 in CA
Median home value$701,600
88th
U.S. $332,700 · CA $734,700740th of 1,586 in CA
Rent-burdened renters62.3%
88th
WeaknessU.S. 51.1% · CA 55.3%364th of 1,610 in CA
Median household income$120,927
85th
StrengthU.S. $80,734 · CA $99,122421st of 1,575 in CA
Healthcare workers12.1%
82nd
U.S. 9.7% · CA 9.4%272nd of 1,678 in CA
Unemployment rate7.2%
81st
WeaknessU.S. 5.2% · CA 6.6%599th of 1,681 in CA
Foreign-born residents24.4%
81st
U.S. 14.1% · CA 27%627th of 1,688 in CA
Median earnings per worker$61,111
77th
U.S. $49,666 · CA $52,643573rd of 1,658 in CA
Government workers18.2%
77th
U.S. 14.5% · CA 14.8%536th of 1,678 in CA
Population46,387
76th
U.S. 334,922,499 · CA 39,287,377278th of 1,688 in CA
Tech workers4.5%
74th
U.S. 3.8% · CA 4.4%417th of 1,678 in CA
Work from home17.7%
71st
U.S. 15.1% · CA 17.2%709th of 1,680 in CA
Population density3,307/sq mi
70th
U.S. 95/sq mi · CA 252/sq mi596th of 1,688 in CA
Per capita income$46,240
65th
U.S. $44,673 · CA $49,513763rd of 1,685 in CA
Homeownership rate73.2%
62nd
U.S. 65.2% · CA 55.9%485th of 1,662 in CA
Bachelor's degree or higher32.3%
51st
U.S. 35.7% · CA 37.1%814th of 1,687 in CA
Median age38.8
48th
U.S. 38.9 · CA 37.9939th of 1,687 in CA
Residents under 1821.9%
48th
U.S. 22% · CA 22%689th of 1,688 in CA
Poverty rate8.3%
34th
U.S. 12.5% · CA 12%1,093rd of 1,666 in CA
Veterans3.9%
25th
U.S. 6.2% · CA 4.3%922nd of 1,686 in CA
Self-employed workers7.4%
24th
U.S. 10% · CA 11.4%1,352nd of 1,678 in CA
Uninsured rate4%
22nd
U.S. 8.4% · CA 6.6%1,072nd of 1,675 in CA
Residents 65 and older12.8%
22nd
U.S. 17.2% · CA 15.7%1,236th of 1,688 in CA
Income inequality (Gini)0.391
14th
StrengthU.S. 0.483 · CA 0.4891,363rd of 1,651 in CA
Housing vacancy2.3%
5th
U.S. 10.1% · CA 7.5%1,533rd of 1,664 in CA

Measure	94531	Contra Costa	CA	U.S.	National percentile	Rank in CA
Median gross rent	$3,150	$2,375	$2,036	$1,413	99th	90th of 1,464
Average commuteWeakness	44.2 min	35.3 min	28.7 min	26.4 min	99th	57th of 1,584
Diversity index	78.3	73.3	69.7	61.4	99th	2nd of 1,688
Broadband accessStrength	96.9%	95.6%	93.5%	91%	92nd	293rd of 1,662
Median home value	$701,600	$866,800	$734,700	$332,700	88th	740th of 1,586
Rent-burdened rentersWeakness	62.3%	56.1%	55.3%	51.1%	88th	364th of 1,610
Median household incomeStrength	$120,927	$127,229	$99,122	$80,734	85th	421st of 1,575
Healthcare workers	12.1%	9.2%	9.4%	9.7%	82nd	272nd of 1,678
Unemployment rateWeakness	7.2%	6.5%	6.6%	5.2%	81st	599th of 1,681
Foreign-born residents	24.4%	26.6%	27%	14.1%	81st	627th of 1,688
Median earnings per worker	$61,111	$67,204	$52,643	$49,666	77th	573rd of 1,658
Government workers	18.2%	14.6%	14.8%	14.5%	77th	536th of 1,678
Population	46,387	1,165,012	39,287,377	334,922,499	76th	278th of 1,688
Tech workers	4.5%	5.3%	4.4%	3.8%	74th	417th of 1,678
Work from home	17.7%	21.3%	17.2%	15.1%	71st	709th of 1,680
Population density	3,307/sq mi	1,625/sq mi	252/sq mi	95/sq mi	70th	596th of 1,688
Per capita income	$46,240	$62,927	$49,513	$44,673	65th	763rd of 1,685
Homeownership rate	73.2%	68%	55.9%	65.2%	62nd	485th of 1,662
Bachelor's degree or higher	32.3%	45.2%	37.1%	35.7%	51st	814th of 1,687
Median age	38.8	40.5	37.9	38.9	48th	939th of 1,687
Residents under 18	21.9%	22%	22%	22%	48th	689th of 1,688
Poverty rate	8.3%	8.4%	12%	12.5%	34th	1,093rd of 1,666
Veterans	3.9%	4.2%	4.3%	6.2%	25th	922nd of 1,686
Self-employed workers	7.4%	11.4%	11.4%	10%	24th	1,352nd of 1,678
Uninsured rate	4%	4.6%	6.6%	8.4%	22nd	1,072nd of 1,675
Residents 65 and older	12.8%	17.1%	15.7%	17.2%	22nd	1,236th of 1,688
Income inequality (Gini)Strength	0.391	0.471	0.489	0.483	14th	1,363rd of 1,651
Housing vacancy	2.3%	3.5%	7.5%	10.1%	5th	1,533rd of 1,664

The percentile is the share of Americans who live in a zip code with a lower value, so the 50th percentile is typical. Rank 1 is the highest value in the state. Both include zip codes with at least 100 residents. Strengths and weaknesses mark measures in the best or worst fifth nationally, where higher or lower is clearly better (income, poverty, education, commute, broadband, insurance and similar). Measures like age or density are left unmarked.

People

Age

Under 5

16%

5–17

18–24

14%

25–34

13%

35–44

13%

45–54

16%

55–64

65–74

75+

Median age

38.8

Under 18

21.9%

65 and over

12.8%

Race and ethnicity

White23%
Black25%
Hispanic24%
Asian21%
Native American0.3%
Pacific Islander0.2%
Other0.8%
Multiracial7%

Diversity index

78.3

U.S. 61.4

Foreign-born

24.4%

U.S. 14.1%

Born in state

59.3%

Language spoken at home (households)

English only

53%

Spanish

19%

Other Indo-European

Asian / Pacific

18%

Other

Households

Households: 13,905
Average household size: 3.3
Family households: 81.2%
Married couples: 56.3%
Living alone: 13.5%
Veterans (of adults): 3.9%
Male / female: 48% / 52%

Income and poverty

Household income distribution

<$25k

$25–50k

$50–75k

$75–100k

15%

$100–150k

20%

$150–200k

15%

$200k+

25%

Median household income

94531

$120,927

Contra Costa Co.

$127,229

California

$99,122

United States

$80,734

Per capita income

$46,240

U.S. $44,673

Poverty rate

8.3%

U.S. 12.5%

Households earning $150K+

39.8%

U.S. 23%

Income inequality (Gini)

0.391

U.S. 0.483

Housing

Median home value

94531

$701,600

Contra Costa Co.

$866,800

California

$734,700

United States

$332,700

Median gross rent

94531

$3,150

Contra Costa Co.

$2,375

California

$2,036

United States

$1,413

Types of housing

Single-family

94%

2–4 units

5–19 units

20+ units

Mobile home

0.1%

Boat, RV, van

Housing units: 14,239
Owner-occupied: 73.2%
Vacant: 2.3%
Median year built: 1997
Median rooms: 6.8
Renters paying 30%+ of income: 62.3%
Renters paying 50%+ of income: 34.3%
Home value to income: 5.8× (U.S. 4.1×)

Work and commute

How people get to work

Drove alone

65%

Carpooled

11%

Transit

Walked

0.5%

Bicycle

Worked from home

18%

Other

0.9%

Commute time (one way)

<10 min

10–19

22%

20–29

30–44

17%

45–59

13%

60+

34%

Average commute

44.2 min

U.S. 26.4 min

Unemployment

7.2%

U.S. 5.2%

In labor force

66.1%

U.S. 63.5%

Jobs and careers

What employed residents do, wherever they work

Occupations

Office and admin

12%

Healthcare

12%

Management

11%

Sales

Transportation and moving

Business and finance

Construction and repair

Cleaning and personal care

Computer and math

Education

Food service

Legal and social services

Engineering and science

Production

Police and fire

Arts, media and sports

Farming, fishing and forestry

0.1%

Industries

Health care and social assistance

19%

Retail

12%

Professional and technical services

Transportation, warehousing and utilities

Finance, insurance and real estate

Other services

Education

Construction

Restaurants and hotels

Public administration

Admin, support and management

Manufacturing

Information

Wholesale

Arts and recreation

Agriculture and mining

0.4%

Median earnings per worker

$61,111

U.S. $49,666

Self-employed

7.4%

U.S. 10%

Government workers

18.2%

U.S. 14.5%

Nonprofit workers

10.1%

U.S. 8.8%

Median earnings by type of work

Type of work	94531	U.S.
Management, business, science and arts	$91,097	$74,888
Service	$33,704	$26,804
Sales and office	$46,556	$40,476
Construction and maintenance	$74,825	$49,199
Production and transportation	$44,561	$39,989

Education, internet and health coverage

Highest education (adults 25+)

No diploma

10%

High school

25%

Some college

23%

Associate's

10%

Bachelor's

22%

Graduate

10%

High school graduate or higher: 90.2%
Bachelor's degree or higher: 32.3%
Graduate or professional degree: 9.9%
Households with broadband: 96.9%
Cable, fiber or DSL: 83.8%
No internet access: 1.2%
Without health insurance: 4%
Limited-English households: 5.9%

Geography

City (USPS): Antioch
State: California
County: Contra Costa County
Center point: 37.9567° N, 121.7778° W
Land area: 14 sq mi
Water area: under 0.1 sq mi
Time zone: Pacific Time (UTC-8, UTC-7 in summer)
Zip type: Residential delivery area

Cities and towns within this zip

Antioch89% of zip

Census places overlapping the zip's area. Mail may use a different city name than the municipality.

Zip codes near 94531

Search by radius

Zip	City	Distance	Population	IncomeMedian income	Home value
94509	Antioch, CA	3.1 mi	70,090	$86,196	$584,100
94513	Brentwood, CA	5.4 mi	69,755	$142,223	$837,800
94561	Oakley, CA	5.4 mi	46,368	$134,678	$659,800
94548	Knightsen, CA	7 mi	832	$189,653	$959,900
94517	Clayton, CA	7.7 mi	12,316	$168,921	$1,032,100
94565	Pittsburg, CA	8.9 mi	100,488	$95,556	$583,800
94511	Bethel Island, CA	9.4 mi	1,864	$74,972	$682,700
94527	Concord, CA · PO box	9.8 mi	—	—	—
94521	Concord, CA	11 mi	41,909	$125,899	$853,200
94505	Discovery Bay, CA	12 mi	14,970	$146,480	$830,500
94514	Byron, CA	12 mi	1,953	$76,511	$735,600
94588	Pleasanton, CA	12 mi	34,328	$191,073	$1,384,300

Zip codes like 94531 elsewhere

Matched on income, home values, age, density, education, housing and commuting

Questions about 94531

What city is zip code 94531?

94531 is assigned to Antioch, California. The city name is the one the Postal Service prefers for mail addressed to this zip code.

What county is 94531 in?

94531 is in Contra Costa County, California.

What is the population of 94531?

About 46,387 people live in 94531, according to the Census Bureau's American Community Survey.

What time zone is 94531 in?

94531 is in Pacific Time.

What is the median household income in 94531?

The median household income in 94531 is $120,927.

What zip codes are near 94531?

The closest zip codes to 94531 are 94509, 94513, 94561, 94548, 94517.

Demographic figures are 2020–2024 American Community Survey 5-year estimates for ZIP Code Tabulation Area 94531, from the U.S. Census Bureau. Small areas have wide margins of error. How we build these numbers.