Richton Park, Illinois, United States [Village]; population was 10,523 in 1990; housing units was 4,026 in 1990; location is 41°29'N 87°44'W; land area is 2.84 square miles (1,815 acres); water area is 0.02 square miles (13 acres); FIPS code is 63706 [SourceCBP]