Clayton, California

Clayton population, 2020 to 2024

Clayton lost 128 residents from July 2020 to July 2024, a change of -1.2%. In the latest year it moved by +80. Among 429 California places of 5,000 or more, that growth ranks 224th; the median place changed by -1.1%. The median place of 5,000+ in California has 37,056 people, so Clayton is 30% of it.

Clayton covers 3.84 square miles of land, for 2,847 people per square mile of land. The median California place of 5,000+ has 3,725, so Clayton is less dense than the typical town.

What county Clayton is in

All of Clayton's residents live in Contra Costa County, which had 1,172,607 residents in 2024. Clayton holds 0.9% of the county's population. The shaded shape is on the map above; dots mark the eight nearest places.

ZIP codes in Clayton

1 ZIP Code Tabulation Area (ZCTA) overlaps Clayton by at least 10% of the ZCTA's or the city's land: 94517. ZCTAs are Census approximations of USPS ZIP code delivery areas. The list comes from the 2020 ZCTA to place relationship file, so a city that annexed land after 2020 may reach into ZIP codes not listed here.

Where Clayton is

The Census internal point of Clayton is at 37.940300, -121.930100. Sacramento, the capital, is 50.0 miles NNE in a straight line. The nearest larger place is Concord, CA (124,016 people), 4.5 miles away.

Daylight in Clayton

At 37.94° N, Clayton gets about 14 h 48 min of daylight around the June solstice and 9 h 32 min around the December solstice, a swing of 5 h 16 min. Figures are sunrise to sunset from the SunCalc model for June 21 and December 21, 2026.

Places near Clayton

The eight nearest incorporated places of 1,000+ in California, measured between internal points. The closest is Concord, 4.5 miles away, with 124,016 people.