Hillsborough is an incorporated town in San Mateo County, California, in the San Francisco Bay Area. Take a look below for 10 interesting and awesome facts about Hillsborough, California, United States.
1. 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.
2. The population was 11,387 as of 2020.
3. 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.
4. Howard settled his family in this area, which attracted wealthy San Franciscans. On May 5, 1910, Hillsborough residents voted to incorporate.
5. From the town’s foundation until 1963, it was an exclusive community for wealthy whites. That all changed in 1963 when Jack and Betty Ken, the first-generation children of Chinese Immigrants, purchased land in the town.
6. This made them the first non-white people to own land in the town, which effectively desegregated Hillsborough.
7. December is the coolest month with an average high of 60 degrees, and September is the warmest month with an average high of 78 degrees. Hillsborough has a Mediterranean climate (Köppen climate classification Csa), with the vast majority of the precipitation from the months of November to April.
8. On average, Hillsborough receives 17 inches (430 mm) of rain. With coastal mountains to the west of Hillsborough, it is blocked in the winter from much of the rainfall over Half Moon Bay, and in the summer it is blocked from virtually all the fog of the coast.
9. Hillsborough receives an average of 307 days of sunshine annually, with 52 days of recordable precipitation per year.
10. According to the United States Census Bureau, the town has a total area of 6.2 square miles (16 km2), all of it land. The area’s considerably winding, hilly topography, and impossibility of a grid layout make Hillsborough notoriously challenging to navigate. Many lots include fairly steep slopes, particularly the western side of the town, with the landscape generally flattening to the east as it descends from the 280 freeway to El Camino Real and the towns of Burlingame and San Mateo.