Rancho Santa Margarita, California, United States [CDP]; population was 11,390 in 1990; housing units was 4,951 in 1990; location is 33°38'N 117°36'W; land area is 4.17 square miles (2,670 acres); water area is 0.01 square miles (7 acres); FIPS code is 59587 [SourceCBP]
