Hillsborough is an incorporated town in San Mateo County, California, in the San Francisco Bay Area. It is located 17 miles south of San Francisco on the San Francisco Peninsula, bordered by Burlingame to the north, San Mateo to the east, Highlands-Baywood Park to the south, and Interstate 280 to the west.
Hillsborough is located on the Rancho San Mateo Mexican land grant which was purchased by William Davis Merry Howard, son of a wealthy Hillsborough, New Hampshire, shipping magnate, in 1846. Howard settled his family in this area, which attracted wealthy San Franciscans.
Hillsborough has its own highly regarded and -ranked public elementary and middle school system, but no public high school. High school-aged children can attend one of several schools in the San Mateo Union High School District, generally assigned by residential address. The town is also home to a small number of independent schools. The Hillsborough school district is ranked as the #1 school district in California and one of the top ten school districts in the country.