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.
Data after 2023 is projected based on recent change
Overall: 30.1 years
Female: 27.2 years
Male: 35.8 years
There are 46 adults, (4 of whom are seniors) in Marysville.
Female: 37 (52.9%)
Male: 33 (47.1%)
The racial composition of Marysville includes 98.57% White, and smaller percentages for Two or more races and multiracial populations.
| Race | Population ↓ | Percentage (of total) |
|---|---|---|
| White | 69 | 98.57% |
| Two or more races | 1 | 1.43% |