The card's been signed and the cake is all gone. It's been a good run, but MapQuest Open Street Map site has been retired. We apologize for any inconvenience. But don't worry! If you're using a map generated from this site on your website, please visit our Developer blog for information on how to transition your map to our updated tiles.
The Bay Area (more fully, the San Francisco Bay Area), ringing the San Francisco Bay in northern California, is a geographically diverse and extensive metropolitan region that is home to over 7 million inhabitants in cities such as San Francisco, Oakland, and San Jose.
About this area: Contra Costa County belongs to one of Californiaâs busiest urban centersâthe San Francisco Bay Area.There are nine counties contributing to the economy of the Bay Area: Contra Costa, Alameda, Marin, Napa, Santa Clara, San Francisco, San Mateo, Solano and Sonoma.ata for Contra Costa County is not available. Data for Oakland-Hayward-Berkeley Metro Div has been displayed for Occupations with Fastest Job Growth (% change).