Harleysville is a census-designated place (CDP) in Montgomery County, Pennsylvania, United States. It is a suburb of Philadelphia. The population was 9,286 at the 2010 census. It is located mostly within Lower Salford Township and also in Franconia Township. Harleysville was settled by Pennsylvania Dutch in the 18th century and was named after Samuel Harley.
Harleysville was settled early in Pennsylvania’s history (circa 1700).
Harleysville is home to an annual Heckler Fest held at the historical Heckler Plains, one of the oldest properties in the area.
Harleysville holds an annual Jaycee's Country Fair Days at the Harleysville Community Center, which many people from close by towns come to.
Harleysville also holds an annual Apple Butter Frolic to celebrate its Mennonite heritage in early fall.
It is also home to the Mennonite Heritage Center.