Contra Costa County is a county located in the northern portion of the East Bay region of the San Francisco Bay Area of Northern California. The county seat is Martinez, but the largest city is Concord.
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The county seat is Martinez. ... It occupies the northern portion of the East Bay region of the San Francisco Bay Area and is primarily suburban. The county's ...
Oakland is the largest city in Contra Costa County. What is the smallest city in Contra Costa County, California? Port Costa is the smallest city in Contra ...
2020 City Population and Growth Rate ; San Ramon city, 84,605, 72,148 ; Antioch city, 115,291, 102,372 ; Richmond city, 116,448, 103,701 ; Orinda city, 19,514 ...
San Pablo, City, Contra Costa, 25,051, 30,106 ; San Ramon, City, Contra Costa, 35,277, 44,706 ...
Contra Costa County, California has 716.9 square miles of land area and is the 51st largest county in California by total area. Total Population:1,165,927.
Contra Costa County, California has 716.9 square miles of land area and is the 51st largest county in California by total area. Total Population:1,165,927.
Cities & Communities of Contra Costa ; Antioch · Brentwood · Clayton · Concord · Town of Danville · El Cerrito ; Lafayette · Martinez · Town of Moraga · Oakley.
Contra Costa County is home to more than one million residents, and was one of the original 27 counties established in California in 1850.