Rolling Hills Estates, California, United States [City]; population was 7,789 in 1990; housing units was 2,873 in 1990; location is 33°47'N 118°21'W; land area is 3.54 square miles (2,264 acres); water area is 0.02 square miles (10 acres); FIPS code is 62644 [SourceCBP]