Template:Contra Costa County, California
{{US county navigation box
| county = Contra Costa County
| state = California
| template_name = Contra Costa County, California
| listclass = hlist
| color = {{California/color}}
| map_image = Map of California highlighting Contra Costa County.svg
| map_size = 100x100
| seat = Martinez
| title1 = Cities and towns
| body1 =
- Antioch
- Brentwood
- Clayton
- Concord
- Danville
- El Cerrito
- Hercules
- Lafayette
- Martinez
- Moraga
- Oakley
- Orinda
- Pinole
- Pittsburg
- Pleasant Hill
- Richmond
- San Pablo
- San Ramon
- Walnut Creek
| title2 = CDPs
| body2 =
- Acalanes Ridge
- Alamo
- Alhambra Valley
- Bay Point
- Bayview
- Bethel Island
- Blackhawk
- Byron
- Camino Tassajara
- Castle Hill
- Clyde
- Contra Costa Centre
- Crockett
- Diablo
- Discovery Bay
- East Richmond Heights
- El Sobrante
- Kensington
- Knightsen
- Montalvin Manor
- Mountain View
- Norris Canyon
- North Gate
- North Richmond
- Pacheco
- Port Costa
- Reliez Valley
- Rodeo
- Rollingwood
- San Miguel
- Saranap
- Shell Ridge
- Tara Hills
- Vine Hill
| title3 = Former CDPs
| body3 =
| title4 = Unincorporated
communities
| body4 =
| title5 = Ghost towns
| body5 =
- Eckley
- Giant (Nitro)
- Judsonville
- Nortonville
- Point of Timber
- Port Chicago
- Somersville
- Stewartville
- West Hartley
- Winehaven
}}