Oakley, California

City of Oakley
Oakley City Hall
Location in Contra Costa County and the state of California
City of Oakley
Location in the United States
Coordinates: 37°59′51″N 121°42′45″W / 37.99750°N 121.71250°W / 37.99750; -121.71250
Country United States
State California
CountyContra Costa
IncorporatedJuly 1, 1999
Government
  MayorShannon Shaw
  State SenatorChristopher Cabaldon (D)
  State AssemblyLori Wilson (D)
  U. S. CongressMark DeSaulnier (D)
Area
  Total
16.17 sq mi (41.88 km2)
  Land15.86 sq mi (41.09 km2)
  Water0.30 sq mi (0.79 km2)  1.87%
Elevation
20 ft (6 m)
Population
 (2020)
  Total
43,357
  Density2,700/sq mi (1,000/km2)
Time zoneUTC-8 (PST)
  Summer (DST)UTC-7 (PDT)
ZIP code
94561
Area code925
FIPS code06-53070
GNIS feature IDs277567, 2411294
Websiteoakleyca.gov

Oakley is a city in Contra Costa County, California, United States. It is within the nine-county San Francisco Bay Area. The population at the 2020 United States census was 43,357. Oakley was incorporated in 1999, making it the newest incorporated city in Contra Costa County.