La Riviera, California, United States [CDP]; population was 10,986 in 1990; housing units was 4,427 in 1990; location is 38°34'N 121°21'W; land area is 1.79 square miles (1,144 acres); water area is 0.19 square miles (123 acres); FIPS code is 40410 [SourceCBP]