The County enjoys a varied geography ranging from urban marinas to rolling open spaces to hillside lakes and streams.
Contra Costa County
The County of Contra Costa, California (the "County") was incorporated in 1850 as one of the original 27 counties of the State of California (the "State"), with the City of Martinez as the County Seat.
Marin is just south of Sonoma County and connects via the Golden Gate Bridge to San Francisco.
Mendocino borders Sonoma County to the North and also has some beautiful coastlines and home to the famous Skunk Train.
is Sonoma County's the neighbor to the east, and also a traveling destination and home to 130,000 residents.
San Francisco City and County
San Francisco is a unique and breathtaking metropolis. From the famous icon of the Golden Gate Bridge to the exquisite art galleries at SFMOMA, the City takes pride in its unrivaled attractions, renowned museums, and its unique neighborhoods which are treasures of its own.
San Mateo County
San Francisco International Airport is located at the northern end of San Mateo County. It covers most of the San Francisco Peninsula just south of San Francisco.
Santa Clara County
Santa Clara, is a county located at the southern end of the San Francisco Bay Area. The highly urbanized Santa Clara Valley within Santa Clara County is also known as Silicon Valley.
The blend of agriculture, corporate business and pleasant lifestyle enhance the attraction of Solano County.
CSAC Listing of California County Websites
California State Association of Counties