Opal Cliffs, California, United States [CDP]; population was 5,940 in 1990; housing units was 3,030 in 1990; location is 36°57'N 121°58'W; land area is 0.77 square miles (493 acres); water area is 1.23 square miles (787 acres); FIPS code is 53924 [SourceCBP]
