San Jose-San Francisco-Oakland, CSA]], San Francisco-Oakland-Fremont, CA MSA in red
San Francisco-Oakland-Fremont, CA MSA is a Metropolitan Statistical Area within the San Francisco Bay Area, which includes a number of its core cities and counties. It is defined by the US Census Bureau to include core areas economically influenced by San Francisco rather than outlying cities such as San Jose which has its own MSA. The definition states that it consists of 5 counties, grouped into two divisions. Those 5 counties are San Francisco, Alameda, Marin, Contra Costa, and San Mateo County. It is a subset of the 9 county San Francisco Bay Area, as well as the 11 county Combined Statistical Area, the San Francisco Bay Area Combined Statistical Area.
This region had a population of 4,335,391 during the 2010 census, a land area of 2,470.5 square miles, giving an average population density of 1,754.8 people per square mile. The "Inland Empire"'s recent growth has given it a similar population, and the San Francisco-Oakland-Fremont, CA MSA is forecast to rank third in the state by the next census, from its long held 2nd position. Much of the region includes uninhabited mountains.
The GDP of the region was $325.9 billion in 2010, slightly up from 2007 of $321.4 billion, showing the effects of the Financial Crisis, but nearly triple the Inland Empire. The GDP per capita was $75,171 in 2010, still among the highest in the United States, though considerably lower than adjacent San Jose-Sunnyvale-Santa Clara, CA MSA.
Bay Area Rapid Transit serves all the counties except Marin. Golden Gate Transit serves Marin, with limited connections to San Francisco and Contra Costa, along with service to outlying Sonoma County. AC Transit serves Alameda and Contra Costa, with connections to San Francisco's transit hub.