Bethel Island

County:: Contra Costa County
County Seat:: No
Area (mi²):: 5.251
State:: California

Bethel Island is a CDP located in Contra Costa County, California. Bethel Island has a 2025 population of 1,957. Bethel Island is currently declining at a rate of -0.61% annually and its population has decreased by -2.88% since the most recent census, which recorded a population of 2,015 in 2020.

The average household income in Bethel Island is $92,308 with a poverty rate of 29.76%. The median age in Bethel Island is 54.5 years: 37.8 years for males, and 57 years for females.

Demographics

The racial composition of Bethel Island includes 67.3% White, 20.94% other race, 6.76% Asian, and smaller percentages for Native Hawaiian or Pacific Islander, Black or African American, Native American and multiracial populations.

Population by Race

White

Other race

Asian

Two or more races

Native Hawaiian or Pacific Islander

Black or African American

Native American

Race	Population	Percentage (of total)
White	1,443	67.3%
Other race	449	20.94%
Asian	145	6.76%
Two or more races	70	3.26%
Native Hawaiian or Pacific Islander	37	1.73%
Black or African American	0	0%
Native American	0	0%

Bethel Island Marital Status

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Bethel Island's average per capita income is $78,518. Household income levels show a median of $78,393. The poverty rate stands at 29.76%.

Families: A family includes the owner or renter of the home along with everyone related to them - whether through birth, marriage, or adoption. This includes relatives like spouses, children, parents, siblings, grandparents, and any other family members.

Households: A household includes all the people who occupy a housing unit (such as a house or apartment) as their usual place of residence.

Non Families: A nonfamily household is either someone living alone or when the owner/renter lives with people they aren't related to, like roommates.

Name	Median	Mean
Married Families	$181,849	-
Families	$99,611	$121,103
Households	$78,393	$92,308
Non Families	-	$69,462

$78,518

Average Income

$78,393

Median Household Income

29.76%

Poverty Rate