Olympia Fields, Illinois, United States [Village]; population was 4,248 in 1990; housing units was 1,434 in 1990; location is 41°31'N 87°42'W; land area is 2.86 square miles (1,830 acres); water area is 0.00 square miles (2 acres); FIPS code is 55938 [SourceCBP]