| Place Name | Osage |
| Place Type | City |
| ZIP Code(s) | 50461 |
| County | Mitchell County |
| Area Code(s) | 641 |
| Timezone | Central Daylight Time (CDT) |
| Population (2022) | 3,615 |
| Population Growth Rate (2010-19) | 0.22% |
| Majority Ethnicity | White 95.51% |
| US Congressional District(s) | Iowa 1st |
| State House Districts | 51 |
| State Senate Districts | 26 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 95.51% |
| African American | 1.28% |
| Hispanic | 0.17% |
| Asian | 2.02% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 1.03% |