Monfort Heights South, Ohio, United States [CDP]; population was 4,587 in 1990; housing units was 1,593 in 1990; location is 39°10'N 84°36'W; land area is 3.47 square miles (2,219 acres); water area is 0.00 square miles (0 acres); FIPS code is 51216 [SourceCBP]