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Bethel Island, CA

Census-designated place in Contra Costa County, California. ZIP codes: 94511.

Population

1,864

Land area

5.3sq mi

People per sq mi

355

ZIP codes

1

Bethel Island and its ZIP codes

Full map

Bethel Island at a glance

  • Bethel Island is 41% denser than California as a whole.
  • Households here earn a median of $74,972 a year, 24% less than the California figure of $99,122.
  • A typical owner-occupied home is valued at $682,700 (7% below California) and median rent is $1,606 a month.

Local data for Bethel Island, CA

Counts from official public data

Housing and community stats

Bethel Island, CA, American Community Survey 2020-2024

Full profile

Median household income

$74,972

Poverty rate

34.6%

Median home value

$682,700

Median rent

$1,606/mo

Homeownership

64.2%

Bachelor's or higher

18.9%

Median age

56.6

Largest reported origins and ancestries: Mexican Americans (461), Guatemalan Americans (316), Italian Americans (224).

Home values and rentsIncome, education and commute

Economy and federal money

Jobs, pay, income and spending are for Contra Costa County. PPP loans are for Bethel Island.

Details

Unemployment rate

5.0%

Aug 2026, -0.2 pts in a year

Average annual pay

$87,200

374,448 jobs, 2025

Income per person

$108,259

BEA, 2024

Federal spending

$7.1B

FY 2026, $6,088 per person

PPP loans

$1.19M

26 loans, 136 jobs reported

Contra Costa County economyFederal spendingPPP loans

How people get to work

Bethel Island, CA, workers 16 and older. American Community Survey 5-year estimates

  • Drove alone74.8%
  • Carpooled10.5%
  • Public transit0.0%
  • Walked0.0%
  • Bicycle0.0%
  • Taxi, ride-hailing, motorcycle or other0.0%
  • Worked from home14.8%

Environment and hazard risk

Bethel Island, CA, from FEMA, NOAA and EPA

Full report

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

Hazards, floods and storm historyCheck a flood zone

Health statistics

Share of adults in Bethel Island, CA, CDC PLACES estimates

All 40 measures

Obesity

32.4%

U.S. 33.3% -0.9 pts

Diabetes

14.0%

U.S. 12.1% +1.9 pts

Smoking

13.1%

U.S. 12.8% about the same

Uninsured (18-64)

8.0%

U.S. 11.1% -3.1 pts

ZIP codes in Bethel Island

1 in or overlapping Bethel Island. Population shown

·

Cities near Bethel Island

NameDistanceLand area (sq mi)
OakleyCity3.6 mi15.9
KnightsenCensus-designated place4.7 mi8.4
BrentwoodCity8 mi14.9
Discovery BayCensus-designated place8.5 mi5.6
AntiochCity9.2 mi29.2
IsletonCity9.3 mi0.4
TerminousCensus-designated place10 mi1
Rio VistaCity11 mi6.6
ByronCensus-designated place11 mi6.5
PittsburgCity13 mi17.7
Walnut GroveCensus-designated place16 mi10.2
Lincoln VillageCensus-designated place17 mi0.7
ClaytonCity17 mi3.8
Country ClubCensus-designated place17 mi1.9
Bay PointCensus-designated place17 mi6.4
ThorntonCensus-designated place18 mi2.1

Frequently asked questions

What county is Bethel Island, CA in?
Bethel Island is in Contra Costa County, California.
What ZIP codes are in Bethel Island, CA?
ZIP codes in or overlapping Bethel Island include 94511.
What is the population of Bethel Island, CA?
About 1,864 people live in Bethel Island, based on American Community Survey 5-year estimates.
What cities are near Bethel Island?
Nearby places include Oakley (3.6 mi), Knightsen (4.7 mi), Brentwood (8 mi), Discovery Bay (8.5 mi), Antioch (9.2 mi).

Source: U.S. Census Bureau (TIGER/Line boundaries, American Community Survey) · Data as of 12/31/2023