Marysville is a borough in Perry County, Pennsylvania, United States. The population was 2,425 in July 2008. It is part of the Harrisburg–Carlisle Metropolitan Statistical Area.
The Borough was settled in 1755, incorporated as the Borough of Haley in 1866, and re-incorporated as the Borough of Marysville in 1867.
Marysville is located at 40°20′28″N 76°55′59″W / 40.34111°N 76.93306°W / 40.34111; -76.93306 (40.342287, -76.931463).