San Mateo is a city in San Mateo County, California, about 20 miles south of San Francisco and 31 miles northwest of San Jose. San Mateo had an estimated 2019 population of 104,430. It has a Mediterranean climate, and is known for its rich history. The biggest economic contributors to the city include the Medical Center, one of the local school districts, and Sony's Sony Interactive Entertainment division. Finally, being in the center of the San Francisco Bay Area, it has many ways to travel between the major cities of that area.