Oto is a city located in Woodbury County, Iowa. Oto has a 2025 population of 71 . Oto is currently declining at a rate of 0% annually and its population has decreased by -1.39% since the most recent census, which recorded a population of 72 in 2020.
The median age in Oto is 46.5 years: 65 years for males, and 24.7 years for females. For every 100 females there are 94.1 males.
Data after 2023 is projected based on recent change
The racial composition of Oto includes 98.48% White, and smaller percentages for Two or more races and multiracial populations.
White (98.48%)
Two or more races (1.52%)
Race | Population | Percentage (of total) |
|---|---|---|
| White | 65 | 98.48% |
| Two or more races | 1 | 1.52% |
Married
Widowed
Divorced
Separated
Never Married