"Hillsborough is an incorporated town in San Mateo County, California, in the San Francisco Bay Area. Hillsborough is one of the wealthiest places in America and has the highest income of places in America with populations of at least 10,000. It is located seventeen miles (27 km) south of San Francisco on the San Francisco Peninsula, between Interstate 280 and SR 82 (El Camino Real). The population was 10,825 at the 2000 census. The town is served by Hillsborough City School District. Hillsborough is home to some of the Bay Area's wealthiest people, and the landscape is dominated by large estates and mansions; the city enforces a 2,500-square-foot (230 m2) minimum house size and half-acre minimum lot size to preserve exclusivity. As a result, there are no apartments, condominiums or townhouses in the city limits; however, it is not unusual for multi-million dollar mansions along the eastern edge of Hillsborough to face condominiums in neighboring Burlingame, with which it shares ZIP code 94010. Hillsborough was a piece of the Mexican Land Grant Rancho San Mateo purchased by William Davis Merry Howard, son of a wealthy Hillsboro, New Hampshire shipping magnate, in 1846. Howard settled his family in this area, which attracted wealthy San Franciscans. In 1910, Hillsborough residents voted to incorporate." (
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