Clayton Flag

Clayton

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

Clayton is a city located in Contra Costa County, California. Clayton has a 2026 population of 10,869. Clayton is currently declining at a rate of -0.29% annually and its population has decreased by -1.74% since the most recent census, which recorded a population of 11,061 in 2020.

The median household income in Clayton is $175,707 with a poverty rate of 2.49%. The median age in Clayton is 43.8 years: 40.8 years for males, and 45.6 years for females. For every 100 females there are 97.8 males.

10.9K
Total Population
2,831
Density (mi²)
-32 -0.29%
Growth

Clayton Population

Clayton Population

Data after 2023 is projected based on recent change

Year ↓
Population
Growth
Annual Change
202610,869-32-0.29%
202510,901-32-0.29%
202410,933800.74%
202310,853-28-0.26%
202210,881-102-0.93%
202110,983-78-0.71%
202011,061-12-0.11%
201911,583-33-0.28%
201811,616-2-0.02%
201711,618290.25%
201611,589720.63%
201511,5171010.88%
201411,4161251.11%
201311,2911511.36%
201211,1401050.95%
201111,035940.86%
201010,941440.4%
200010,7623,44547.08%
19907,3172,99269.18%
19804,3252,940212.27%
19701,38500%

Median Age

Overall: 43.8 years
Female: 45.6 years
Male: 40.8 years

Clayton Adults

There are 8,352 adults, (1,764 of whom are seniors) in Clayton.

Sex Ratio

Female: 5,529 (50.6%)
Male: 5,408 (49.4%)

Demographics

The racial composition of Clayton includes 66.75% White, 12.68% Asian, and smaller percentages for other race, Black or African American, Native American and multiracial populations.

Population by Race

Race
Population ↓
Percentage (of total)
White7,30066.75%
Two or more races1,86417.04%
Asian1,38712.68%
Other race2782.54%
Black or African American690.63%
Native American390.36%
Race
Population ↓
Percentage (of total)
Two or more races8227.52%
White4133.78%
Other race1931.76%
Native American320.29%
Black or African American210.19%
Race
Population ↓
Percentage (of total)
White6,88762.97%
Asian1,38712.68%
Two or more races1,0429.53%
Other race850.78%
Black or African American480.44%
Native American70.06%

Clayton Marital Status

Economics and Income Statistics

Clayton 's average per capita income is $104,542. Household income levels show a median of $175,707. The poverty rate stands at 2.49%.

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$204,087-
Families$188,108$225,556
Households$175,707$207,457
Non Families$93,333$121,053

$104,542

Average Income

$175,707

Median Household Income

2.49%

Poverty Rate

Nearby Cities

Sources

  1. US Census State Population Estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
  2. US Census County Population Estimates - Most recent county estimates from the Census Bureau's Population Estimates Program
  3. American Community Survey (2009 - 2013)
  4. Census QuickFacts
  5. Historical Populations of States and Counties (1790 - 1990)