Lower Lake, California population were below the poverty line, including 12.0% of those under age 18 and 5.4% of those age 65 or over. In the California State Legislature, Lower Lake is in , and in . In the United States House of Representatives, Lower Lake is in . Lower Lake, California Lower Lake (formerly Grantville) is a census-designated place (CDP) in the southern Clear Lake region of Lake County, in northern California. Lower Lake is also an Indian rancheria of the Koi Nation people. Lower Lake is located 4.5 miles (7.2 km) southwest of the City of Clearlake, and southeast of Kelseyville.
Lower Lake, California in 1870 the feud was settled and Lakeport controlled the seat. Although some believe the seat was stolen from Lower Lake, it has remained in Lakeport for over a century and no longer a topic of concern for locals. At the 2000 census, according to the United States Census Bureau, the CDP had a total area of , of which was land and (0.88%) was water. Lower Lake was founded by E. Mitchell in 1858 as Grantville. He built the first house there. The settlement's first post office was opened in 1858. The population was 1,294 at the 2010 census,