
Lewistown
- County:
- Mifflin County
- County Seat:
- Yes
- Area (mi²):
- 2.03
- State:
- Pennsylvania
Lewistown is a borough located in Mifflin County, Pennsylvania. Lewistown has a 2025 population of 8,319. It is also the county seat of .Lewistown is currently declining at a rate of -0.59% annually and its population has decreased by -2.88% since the most recent census, which recorded a population of 8,566 in 2020.
The average household income in Lewistown is $53,186 with a poverty rate of 32.47%. The median age in Lewistown is 37.1 years: 36.9 years for males, and 37.2 years for females.