
Middletown
- County:
- Des Moines County
- County Seat:
- No
- Area (mi²):
- 0.549
- State:
- Iowa
Middletown is a city located in Des Moines County, Iowa. Middletown has a 2025 population of 364. Middletown is currently declining at a rate of 0% annually and its population has increased by 0.28% since the most recent census, which recorded a population of 363 in 2020.
The average household income in Middletown is $76,499 with a poverty rate of 11.39%. The median age in Middletown is 40.9 years: 38.2 years for males, and 43 years for females.