The Coastal Miwok inhabited the land now known by locks as “The Valley” for thousands of years before Spanish settlers arrived. The Valley became a ranching outpost during the mission system. The land changed hands multiple times until it became a horse ranch in 1868, called the San Geronimo Ranch.
In the 1910’s the area began to be developed by the Lagunitas Development Company which subdivided the land and created the 4 small towns. The towns consisted of mostly summer homes until the 1960’s when young people from San Francisco moved to the area. Jerry Garcia, Van Morrison, Kate Wolf, and Janis Joplin all once lived in the San Geronimo Valley.