College of San Mateo (CSM) is a public community college in San Mateo, California. It is part of the San Mateo County Community College District. College of San Mateo is located at the northern corridor of Silicon Valley and situated on a 153-acre site in the San Mateo hills. The college currently serves approximately 10,000 day, evening and weekend students. The college offers 79 A.A./A.S. degree majors, 75 certificate programs and approximately 100 transfer areas and majors.

San Mateo is a city in San Mateo County, California, United States, on the San Francisco Peninsula. About 20 miles (32 km) south of San Francisco, the city borders Burlingame to the north, Hillsborough to the west, San Francisco Bay and Foster City to the east and Belmont to the south. The population was 105,661 at the 2020 census.