| Name | Iowa County |
| State | Iowa |
| FIPS Code | 19095 |
| County Seat | Marengo |
| Timezone | Central Daylight Time (CDT) |
| Population (2024) | 16,386 |
| Population Growth Rate(2020-2024) | -1.67% |
| Majority Ethnicity | White 95.7% |
| Public School Majority Ethnicity | White 89% |
| Partisan Voting Index | Republican:+14 |
| Unemployment Rate (May 2026) | 5.4% |
| Sales Tax Rate (2025) | 7% |
| Area Code(s) | 319 / 641 |
| Race/Ethnicity | Percentage of Population (2023) |
|---|---|
| White | 95.7% |
| African American | 0.63% |
| Hispanic | 3.37% |
| Asian | 0.22% |
| Native American | 0.08% |
| Hawaiin/Pacific Islander | 0% |
| Race/Ethnicity | Percentage of Public School Students (2023) |
|---|---|
| White | 89.14% |
| African American | 1.12% |
| Hispanic | 6.63% |
| Asian | 0.37% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 0% |