Clearlake, California, United States [City]; population was 11,804 in 1990; housing units was 7,315 in 1990; location is 38°57'N 122°38'W; land area is 10.34 square miles (6,617 acres); water area is 0.27 square miles (176 acres); FIPS code is 13945 [SourceCBP]