The
San Jose-San Francisco-Oakland, CA Combined Statistical Area is a 12-county
Combined Statistical Area (CSA) designated by the United States
Office of Management and Budget in
Northern California that includes the
San Francisco Bay Area. The CSA is more extensive than the popular local definition of the Bay Area, which consists of only the nine counties bordering
San Francisco and
San Pablo Bays:
Alameda,
Contra Costa,
Marin,
Napa,
San Francisco,
San Mateo,
Santa Clara,
Solano, and
Sonoma. The CSA also includes the three counties of
San Joaquin,
Santa Cruz, and
San Benito that do not border San Francisco or San Pablo Bay, but are economically tied to the nine counties that do.