U.S. Route 19 in Pennsylvania

U.S. Route 19 (US 19) in Pennsylvania is closely paralleled by Interstate 79 (I-79) for its entire length. US 19 enters Pennsylvania from the West Virginia state line in Greene County near Mount Morris. Its northern terminus is at US 20 in the city of Erie. Part of it is named for Commodore Oliver Hazard Perry, hero of the Battle of Lake Erie.