Emigrant Gap (formerly, Wilsons Ranch) is an unincorporated community in Placer County, California. The Emigrant Gap community is located southwest of the Emigrant Gap landmark. It lies at an elevation of 5190 feet (1582 m). The Wilsons Ranch post office opened in 1865, changed its name to Emigrant Gap in 1868. The name Wilsons Ranch honored a stage stop operator. Climate According to the Köppen Climate Classification system, Emigrant Gap has a warm-summer Mediterranean climate, abbreviated "Csb" on climate maps. References Unincorporated communities in Placer County, California Populated places in the Sierra Nevada (United States) Unincorporated communities in California