 As the crow flies, Lycoming County is about northwest of Philadelphia and east-northeast of Pittsburgh.According to the United States Census Bureau, the township has a total area of 15.8 square miles (40.8 km2).15.6 square miles (40.5 km2) of it is land and 0.1 square miles (0.4 km2) of it (0.89%) is water.Interstate 180 comes up the river and meets U.S. Highway 220 in Halls just east of the Lycoming Mall and the two routes continue west as an expressway to Williamsport.