Hayden Hill, California
Hayden Hill is an unincorporated community in Lassen County, California. It is located north of Lava Peak, at an elevation of 5715 feet.
The Hayden post office operated from 1871 to 1875. The Hayden Hill post office operated from 1878 to 1887, re-opened in 1888, changed its name to Haydenhill in 1895, and closed in 1912, re-opened in 1915 and closed for good in 1919. The name Providence City came from the nearby Provindence Mine. Hayden is the name of geologist Ferdinand Vandeveer Hayden.
