Upper Lake is a census-designated place (CDP) in Lake County, California, United States. Upper Lake is located 8 miles (13 km) north of Lakeport, at an elevation of 1,345 feet (410 m). The population was 1,052 at the 2010 census, up from 989 at the 2000 census. The Habematolel Pomo of Upper Lake are headquartered here.