
Middletown Dauphin County
- County:
- Dauphin County
- County Seat:
- No
- Area (mi²):
- 2.03
- State:
- Pennsylvania
Middletown is a borough located in Dauphin County, Pennsylvania. Middletown has a 2025 population of 9,650. Middletown is currently growing at a rate of 0.22% annually and its population has increased by 1.1% since the most recent census, which recorded a population of 9,545 in 2020.
The average household income in Middletown is $68,867 with a poverty rate of 14.56%. The median age in Middletown is 32.8 years: 31.6 years for males, and 36 years for females.