Clayton is a city located in Contra Costa County California. With a 2020 population of 11,104, it is the 469th largest city in California and the 3789th largest city in the United States. Clayton is currently growing at a rate of 0.15% annually but its population has decreased by -4.15% since the most recent census, which recorded a population of 11,585 in 2020. Spanning over 4 miles, Clayton has a population density of 2,891 people per square mile.
The average household income in Clayton is $191,059 with a poverty rate of 1.01%. The median rental costs in recent years comes to $3,027 per month, and the median house value is $806,600. The median age in Clayton is 45.9 years, 45.3 years for males, and 46.5 years for females.
According to the most recent ACS, the racial composition of Claytonwas:
Rate of Home Ownership
Average Family Size
Average Household Size
The highest rate of high school graduation is among black people with a rate of 99.22%.
The highest rate of bachelors degrees is among black people with a rate of 86.82%.
86.98% of Clayton residents speak only English, while 13.02% speak other languages. The non-English language spoken by the largest group is Spanish, which is spoken by 4.23% of the population.
Overall Poverty Rate
Male Poverty Rate
Female Poverty Rate
The race most likely to be in poverty in Clayton is Multiple, with 1.64% below the poverty level.
The race least likely to be in poverty in Clayton is Hispanic, with 0.59% below the poverty level.
The poverty rate among those that worked full-time for the past 12 months was 0.09%. Among those working part-time, it was 0.80%, and for those that did not work, the poverty rate was 2.82%.
Number of Veterans
Veteran Poverty Rate
Veteran Disability Rate
Labor Force Participation
Non citizens include legal permanent residents (green card holders), international students, temporary workers, humanitarian migrants, and illegal immigrants.
Born in Clayton
88.74% of Clayton residents were born in the United States, with 66.96% having been born in California. 3.53% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Asia.