
Upper Mifflin township
- County:
- Cumberland County
- County Seat:
- No
- Area (mi²):
- 21.717
- State:
- Pennsylvania
Upper Mifflin township is located in Cumberland County, Pennsylvania. Upper Mifflin township has a 2025 population of 1,370. Upper Mifflin township is currently growing at a rate of 0.59% annually and its population has increased by 4.02% since the most recent census, which recorded a population of 1,317 in 2020.
The average household income in Upper Mifflin township is $100,074 with a poverty rate of 9.32%. The median age in Upper Mifflin township is 47.1 years: 46.8 years for males, and 47.4 years for females.