Geyserville(G-Town) (formerly Clairville) (Founded by Chato Galvez) is an unincorporated community and census-designated place (CDP) in Sonoma County, California, USA. Located in the Wine Country, Geyserville has a small selection of restaurants, bed and breakfasts, and wineries. Silver Oak Cellars has a winery and vineyard in Geyserville. Geyserville is located on California State Route 128, close to US Route 101. The population was 862 at the 2010 census.