San Mateo County is located in the state of California, situated on the San Francisco Peninsula. It is bordered by the Pacific Ocean to the west and San Francisco Bay to the east. The county is known for its diverse communities, including cities like San Mateo, Redwood City, and Daly City. It features a mix of urban and suburban areas, along with beautiful parks and natural reserves. The county is home to several major employers, including technology companies in the Silicon Valley region. It offers a variety of recreational activities, such as hiking in the Santa Cruz Mountains and enjoying beaches along the coast. San Mateo County also has a rich cultural scene, with numerous events and festivals throughout the year.