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Welcome to Contra Costa County ...
Time Zone: Contra Costa County lies in the Pacific Time Zone (PST/PDT) and observes daylight saving time.
The community of Martinez is the Seat for Contra Costa County.
Contra Costa County is one of the original counties of California and was founded in 1850.
From the Census Estimates for 2019, <1> Contra Costa had a population of 1,152,883 people. This is an increase of 9.9% since the last Census (which gave a population of 1,049,025 people in 2010).
At the time of the 2010 Census, Contra Costa represented 2.82% of the total population of California.
Below are some of the communities located in Contra Costa County:
- Antioch
(14 miles [22.5 km] to the east)
- Jump to our Gazetteer entry for Antioch
- Antioch is located in Contra Costa County (CA)
- Population from the 2020 Census: 111,605 people
- Jump to TripAdvisor's Tourism page for Antioch <2>
- Brentwood
(19 miles [30.6 km] to the east)
- Clayton
(6 miles [9.7 km] to the east)
- Jump to our Gazetteer entry for Clayton
- Clayton is located in Contra Costa County (CA)
- Population from the 2020 Census: 11,527 people
- Jump to TripAdvisor's Tourism page for Clayton <2>
- Concord
(2 miles [3.2 km] to the north)
- Jump to our Gazetteer entry for Concord
- Concord is located in Contra Costa County (CA)
- Population from the 2020 Census: 128,544 people
- Jump to TripAdvisor's Tourism page for Concord <2>
- Danville
(8 miles [12.9 km] to the south)
- Jump to our Gazetteer entry for Danville
- Danville is located in Contra Costa County (CA)
- Population from the 2020 Census: 44,883 people
- Former name for Danville:
- Inmanville
- Jump to TripAdvisor's Tourism page for Danville <2>
- El Cerrito
(13 miles [20.9 km] to the west)
- Hercules
(13 miles [20.9 km] to the west)
- Jump to our Gazetteer entry for Hercules
- Hercules is located in Contra Costa County (CA)
- Population from the 2020 Census: 26,221 people
- Jump to TripAdvisor's Tourism page for Hercules <2>
- Lafayette
(4 miles [6.4 km] to the southwest)
- Continue List (11 more) ...
- Martinez
(6 miles [9.7 km] to the northwest)
- Jump to our Gazetteer entry for Martinez
- Martinez is located in Contra Costa County (CA)
- Population from the 2020 Census: 38,027 people
- Jump to TripAdvisor's Tourism page for Martinez <2>
- Moraga
(8 miles [12.9 km] to the southwest)
- Jump to our Gazetteer entry for Moraga
- Moraga is located in Contra Costa County (CA)
- Population from the 2020 Census: 16,967 people
- Former name for Moraga:
- Willow Springs
- Jump to TripAdvisor's Tourism page for Moraga <2>
- Oakley
(19 miles [30.6 km] to the east)
- Jump to our Gazetteer entry for Oakley
- Oakley is located in Contra Costa County (CA)
- Population from the 2020 Census: 42,710 people
- Jump to TripAdvisor's Tourism page for Oakley <2>
- Orinda
(8 miles [12.9 km] to the southwest)
- Jump to our Gazetteer entry for Orinda
- Orinda is located in Contra Costa County (CA)
- Population from the 2020 Census: 19,557 people
- Jump to TripAdvisor's Tourism page for Orinda <2>
- Pinole
(13 miles [20.9 km] to the west)
- Jump to our Gazetteer entry for Pinole
- Pinole is located in Contra Costa County (CA)
- Population from the 2020 Census: 19,207 people
- Jump to TripAdvisor's Tourism page for Pinole <2>
- Pittsburg
(11 miles [17.7 km] to the northeast)
- Pleasant Hill
(Less than 2 miles to the north)
- Richmond
(15 miles [24.1 km] to the west)
- Jump to our Gazetteer entry for Richmond
- Richmond is located in Contra Costa County (CA)
- Population from the 2020 Census: 110,038 people
- Jump to TripAdvisor's Tourism page for Richmond <2>
- San Pablo
(15 miles [24.1 km] to the west)
- San Ramon
(12 miles [19.3 km] to the southeast)
- Walnut Creek
(2 miles [3.2 km] to the south)
Websites of Interest ...
- Websites specific to California
- Websites specific to Contra Costa County
- Websites for nearby counties
- Alameda County
- Marin County
- Sacramento County
- San Francisco County
- San Joaquin County
- Solano County
- Cemetery Information and Directories
Footnotes ...
| <1> | On a yearly basis, the US Census Bureau creates an estimate of the county's population. Keep in mind that this is an estimate and not an actual count. The last physical count was the 2010 Census and the next count will be for the 2020 Census. |
| <2> | While we're fans and frequent users of TripAdvisor, you should know that we're also members of the TripAdvisor affiliate program. |
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