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Antioch city, CA

ZIP 94509 — People & Community

Source: U.S. Census Bureau ACS 2019–2023 5-Year Estimates. Page data updated 2026-08-02.

Middle ClassLarge CommunityLow Snow Area

Demographics, education attainment, health access, and community lifestyle

Population & Demographics in 94509

94509 has a population of 71,013 with a median age of 37.6 yrs (46.8% male).

Race & Ethnicity
White
30.7%-50% vs US avg
x
Black
16.7%+34% vs US avg
x
Asian
9.1%+54% vs US avg
x
Hispanic
42.5%+127% vs US avg
x
Other / Two+
1.0%
x
Age Groups
0–17
24.1%+9% vs US avg
x
18–64
61.5%-0% vs US avg
x
65+
14.4%-12% vs US avg
x
Education
Less than HS
17.6%+59% vs US avg
x
High school
30.5%+17% vs US avg
x
Some college
32.9%+14% vs US avg
x
Bachelor's+
18.9%-44% vs US avg
x
Marital Status
Married
45.5%-5% vs US avg
x
Never married
38.8%+15% vs US avg
x
Divorced
10.2%-1% vs US avg
x
Widowed / Separated
5.5%
x
Diversity Index
69/100

Higher = more diverse (Simpson index from race/ethnicity)

Social & household profile

Poverty, nativity, veterans, disability, family structure, and births (ACS).

Poverty Rate
13.7%+19% vs US avg
x
Foreign Born
28.3%+104% vs US avg
x
Veterans
5.6%-6% vs US avg
x
Disability
15.9%+19% vs US avg
x
Single Parent
14.0%+73% vs US avg
x
Recent Births
46.5%+701% vs US avg
x
Top ancestry
GermanIrishEnglish

Health & Community Indicators in 94509

Poverty Rate
13.7%+19% vs US avg
x
Veterans
5.6%-6% vs US avg
x
Foreign Born
28.3%+104% vs US avg
x
Single Parent
14.0%+73% vs US avg
x
Disability
15.9%+19% vs US avg
x
Uninsured
8.3%+4% vs US avg
x
SNAP Benefits
15.4%+32% vs US avg
x
Private School
0.2%-98% vs US avg
x
Recent Births
46.5%+701% vs US avg
x
Smartphone Only
0.0%
x

People & Community key statistics

Population statistics
Population
Population71,013
Median age37.6
Poverty rate13.7%
Demographics statistics
Demographics
White30.7%
Hispanic42.5%
Black16.7%
Asian9.1%
Foreign-born28.3%