Marysville
- County:
- Marion County
- County Seat:
- No
- Area (mi²):
- 0.539
- State:
- Iowa
Marysville is a city located in Marion County, Iowa. Marysville has a 2026 population of 46. Marysville is currently declining at a rate of 0% annually and its population has increased by 2.22% since the most recent census, which recorded a population of 45 in 2020.
The median age in Marysville is 30.1 years: 35.8 years for males, and 27.2 years for females. For every 100 females there are 89.2 males.