Mount Morris is an unincorporated community and census-designated place (CDP) in Greene County, Pennsylvania, United States. It is located in Perry Township, near I-79. As of the 2010 census the population was 737.GeographyMount Morris is located at, on Interstate 79 near the West Virginia state line. Its elevation is above sea level. According to the U.S. Census Bureau, the CDP has a total area of 6.95sqkm, of which 0.02sqkm, or 0.27%, are water.Places of interestHigh Point Raceway, a motocross track, is located 4mi east of Mount Morris. The track hosts races in the AMA Motocross Championships series, including the High Point Nationals held each Memorial Day weekend. Also known for having authentic Native American trails.Notable residents Joseph Benton Donley (1838–1917), U.S. congressman
