Clayton, California

City of Clayton
Parts of Clayton as seen from Mt. Diablo in Summer 2005
Location of Clayton in Contra Costa County, California.
City of Clayton
Location in the United States
Coordinates: 37°56′28″N 121°56′09″W / 37.94111°N 121.93583°W / 37.94111; -121.93583
Country United States
State California
CountyContra Costa
IncorporatedMarch 18, 1964
Government
  MayorJulie Pierce
  State SenatorJesse Arreguín (D)
  State AssemblyAnamarie Avila Farias (D)
  U. S. CongressMark DeSaulnier (D)
Area
  Total
3.84 sq mi (9.95 km2)
  Land3.84 sq mi (9.95 km2)
  Water0.00 sq mi (0.00 km2)  0%
Elevation
394 ft (120 m)
Population
 (2020)
  Total
11,070
  Density2,882.81/sq mi (1,113.09/km2)
Time zoneUTC-8 (PST)
  Summer (DST)UTC-7 (PDT)
ZIP code
94517
Area code925
FIPS code06-13882
GNIS feature IDs277488, 2409474
Websitewww.ci.clayton.ca.us

Clayton (formerly Clayton's and Claytonville) is a city in Contra Costa County, California, United States. The population was 11,585 as of the 2020 census.