| Name | Monona County |
| State | Iowa |
| FIPS Code | 19133 |
| County Seat | Onawa |
| Timezone | Central Daylight Time (CDT) |
| Population (2024) | 8,503 |
| Population Growth Rate(2020-2024) | -2.93% |
| Majority Ethnicity | White 96.53% |
| Public School Majority Ethnicity | White 85% |
| Partisan Voting Index | Strongly Republican:+22 |
| Unemployment Rate (May 2026) | 3.6% |
| Area Code(s) | 712 |
| Race/Ethnicity | Percentage of Population (2023) |
|---|---|
| White | 96.53% |
| African American | 0.15% |
| Hispanic | 2.58% |
| Asian | 0% |
| Native American | 0.66% |
| Hawaiin/Pacific Islander | 0.07% |
| Race/Ethnicity | Percentage of Public School Students (2023) |
|---|---|
| White | 84.95% |
| African American | 1.27% |
| Hispanic | 5.02% |
| Asian | 0.24% |
| Native American | 4.38% |
| Hawaiin/Pacific Islander | 0% |