
Harleysville
- County:
- Montgomery County
- County Seat:
- No
- Area (mi²):
- 4.177
- State:
- Pennsylvania
Harleysville is a CDP located in Montgomery County, Pennsylvania. Harleysville has a 2025 population of 8,918. Harleysville is currently declining at a rate of -0.28% annually and its population has decreased by -0.64% since the most recent census, which recorded a population of 8,975 in 2020.
The average household income in Harleysville is $141,406 with a poverty rate of 6.23%. The median age in Harleysville is 49 years: 46 years for males, and 52.1 years for females.