Selinsgrove /ˈsiː.lɪnzˌɡroʊv/ is the largest borough in Snyder County, Pennsylvania, United States. The population is estimated to be 5,761 for the 2020 Census.
Selinsgrove is geographically located in the middle of the Susquehanna River Valley in Central Pennsylvania, along U.S. Routes 11 and 15, 45 miles north of Harrisburg and 5.7 miles (9.2 km) southwest of Sunbury. It is the home of Susquehanna University.
U.S. Route 522 (US 522) is a spur route of US 22 in the states of Virginia, West Virginia, Maryland, and Pennsylvania. The U.S. Highway travels in a north-south direction, and runs 308.59 miles (496.63 km) from US 60 near Powhatan, Virginia, to its northern terminus at US 11 and US 15 near Selinsgrove, Pennsylvania. US 522 serves many small cities and towns in the Piedmont, Blue Ridge Mountains, and northern Shenandoah Valley of Virginia. The highway serves the Virginia communities of Goochland, Mineral, Culpeper, the town of Washington, and Front Royal and the independent city of Winchester. US 522 then follows the Ridge-and-Valley Appalachians north and then east through the Eastern Panhandle of West Virginia, a 2-mile-wide (3.2 km) stretch of Western Maryland, and South Central Pennsylvania to its terminus in the Susquehanna Valley. The highway serves Berkeley Springs, West Virginia; Hancock, Maryland; and the Pennsylvania communities of McConnellsburg, Mount Union, Lewistown, and Middleburg.