Clayton

County:: Contra Costa County
County Seat:: No
Area (mi²):: 3.84
State:: California

Clayton is a city located in Contra Costa County, California. Clayton has a 2025 population of 10,551. Clayton is currently declining at a rate of -0.95% annually and its population has decreased by -4.58% since the most recent census, which recorded a population of 11,058 in 2020.

The average household income in Clayton is $200,844 with a poverty rate of 2.16%. The median age in Clayton is 44.3 years: 39.9 years for males, and 46.4 years for females.

Demographics

The racial composition of Clayton includes 70.06% White, 12.15% Asian, 3.08% other race, and smaller percentages for Black or African American, Native American, Native Hawaiian or Pacific Islander and multiracial populations.

Population by Race

White

Two or more races

Asian

Other race

Black or African American

Native American

Native Hawaiian or Pacific Islander

Race	Population	Percentage (of total)
White	7,680	70.06%
Two or more races	1,524	13.9%
Asian	1,332	12.15%
Other race	338	3.08%
Black or African American	49	0.45%
Native American	39	0.36%
Native Hawaiian or Pacific Islander	0	0%

Clayton Marital Status

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Clayton's average per capita income is $105,678. Household income levels show a median of $172,226. The poverty rate stands at 2.16%.

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	$204,975	-
Families	$194,044	$221,116
Households	$172,226	$200,844
Non Families	$89,625	$111,472

$105,678

Average Income

$172,226

Median Household Income

2.16%

Poverty Rate