Geyserville (formerly Clairville) is an unincorporated community and census-designated place (CDP) in Sonoma County, California, USA. Located in the Wine Country, it is noted by tourists for its restaurants, bed and breakfast inns, and wineries. The population was 862 at the 2010 census.
Geyserville, located on the Rancho Tzabaco Mexican land grant, owes its foundation to the discovery in 1847 of a series of hot springs, fumaroles, and steam vents in a gorge in the mountains of Sonoma County, California between Calistoga and Cloverdale. This complex, which became known as The Geysers, soon became a tourist attraction, and a settlement grew up to provide accommodation and serve as a gateway to The Geysers. It was initially known as Clairville but subsequently renamed Geyserville. After the San Francisco and North Pacific Railroad was extended to Cloverdale in the 1870s, its trains stopped in Geyserville.
Geyserville is located on California State Route 128, close to US Route 101.