The Borough of Montoursville is located in Lycoming County and is five miles east of the City of Williamsport . The Borough occupies about 4.2 square miles and has a population of 4,615 (2010 census). The Borough is bound on the north by Interstate I-180, on the west by the Loyalsock Creek, on the south by the Susquehanna River and the east by Fairfield Township . The Borough has twenty-eight (28) miles of paved streets and two-hundred (200) acres of municipal recreation areas. The Borough also owns the Montoursville Borough Water Works, with five wells and an artesian spring. We supply water to an estimated 2,100 residences, plus business and industrial customers.