Luftlinie
Montgomery is located at (41.171393, -76.875826). Montgomery lies along the West Branch of the Susquehanna River, about six miles to the southwest of the borough of Muncy, and eight-and-a-half miles southeast of the city of Williamsport. It borders Clinton Township on sides not bordered by the river. As the crow flies, Lycoming County is about northwest of Philadelphia and east-northeast of Pittsburgh.