Hillsborough is an incorporated town in San Mateo County, California, in the San Francisco Bay Area. Hillsborough is one of the wealthiest communities in America and has the highest income of places in the United States with populations of at least 10,000. It is located 17 miles (27 km) 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. The population was 10,825 at the 2010 census. The town is served by Hillsborough City School District. Hillsborough's landscape is dominated by large homes; the city enforces a 2,500-square-foot (230 m2) minimum house size and minimum lot size of 0.5 acres (2,000 m2) to preserve exclusivity.[2] As a result, there are no apartments, condominiums or businesses in the city limits.