About this area:
San Mateo County is in the middle of a continuous urban area stretching from San Jose (Santa Clara County) in the south to San Francisco County in the north. San Mateo is one of nine counties which significantly contribute to the economy of the San Francisco Bay Area as an urban center. The other eight counties are Napa, Contra Costa, Santa Clara, San Francisco, Solano, Alameda, Sonoma and Marin. The coastal Santa Cruz Mountain range bisects San Mateo, leaving the western side to more rural uses such as agriculture, game preserve, watershed, parks and undeveloped lands. In contrast, the densely populated eastern half of the county contains most major transportation arteries and facilities, including Interstate 280, Highway 101, the Dumbarton and San Mateo Bridges, San Francisco International Airport and the deepwater port of Redwood City.