Coraopolis, Pennsylvania, United States [Borough]; population was 6,747 in 1990; housing units was 3,263 in 1990; location is 40°31'N 80°10'W; land area is 1.34 square miles (856 acres); water area is 0.14 square miles (90 acres); FIPS code is 16144 [SourceCBP]