Hillsborough is an incorporated town in San Mateo County, California, in the San Francisco Bay Area. Primarily a residential suburb of San Francisco, Hillsborough has many mansions and other points of interest within the [...]

Hillsborough is an incorporated town in San Mateo County, California, in the San Francisco Bay Area. Primarily a residential suburb of San Francisco, Hillsborough has many mansions and other points of interest within the [...]