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 2026 population of 365. Middletown is currently declining at a rate of 0% annually and its population has increased by 0.55% since the most recent census, which recorded a population of 363 in 2020.
The median household income in Middletown is $56,750 with a poverty rate of 15%. The median age in Middletown is 39.5 years: 42.3 years for males, and 38.5 years for females. For every 100 females there are 95.2 males.