Montoursville, Pennsylvania, United States [Borough]; population was 4,983 in 1990; housing units was 2,098 in 1990; location is 41°15'N 76°55'W; land area is 4.04 square miles (2,588 acres); water area is 0.13 square miles (83 acres); FIPS code is 50720 [SourceCBP]