Muncy is a borough in Lycoming County, Pennsylvania, USA. The name Muncy comes from the Munsee Indians that once lived in the area. The population was 2,663 at the 2000 census. It is part of the Williamsport, Pennsylvania Metropolitan Statistical Area. Muncy is located on the West Branch Susquehanna River, just south of the confluence of Muncy Creek with the river. Muncy apartments for rent comparison page shows most up to date rent information on Muncy apartments and houses. Rent information is obtained from multiple rental sources but we cannot guarantee their accuracy.