Lost Hills is an unincorporated community in Kern County, California, United States. Lost Hills is located 42 miles (68 km) west-northwest of Bakersfield, at an elevation of 305 feet (93 m). For statistical purposes, the United States Census Bureau has defined Lost Hills as a census-designated place (CDP). The population was 2,370 at the 2020 census, down from 2,412 at the 2010 census.