Millersburg
- County:
- Iowa County
- County Seat:
- No
- Area (mi²):
- 0.122
- State:
- Iowa
Millersburg is a city located in Iowa County, Iowa. Millersburg has a 2026 population of 135. Millersburg is currently declining at a rate of 0% annually and its population has decreased by -0.74% since the most recent census, which recorded a population of 136 in 2020.