
Mifflintown
- County:
- Juniata County
- County Seat:
- Yes
- Area (mi²):
- 0.14
- State:
- Pennsylvania
Mifflintown is a borough located in Juniata County, Pennsylvania. Mifflintown has a 2025 population of 804. It is also the county seat of Juniata County. Mifflintown is currently declining at a rate of -0.86% annually and its population has decreased by -4.06% since the most recent census, which recorded a population of 838 in 2020.
The average household income in Mifflintown is $65,496 with a poverty rate of 10.25%. The median age in Mifflintown is 40.4 years: 44.3 years for males, and 39.8 years for females.