| Place Name | Red Oak |
| Place Type | City |
| ZIP Code(s) | 51566 |
| County | Montgomery County |
| Area Code(s) | 712 |
| Timezone | Central Daylight Time (CDT) |
| Population (2022) | 5,710 |
| Population Growth Rate (2010-19) | -2.54% |
| Majority Ethnicity | White 91.71% |
| US Congressional District(s) | Iowa 3rd |
| State House Districts | 23 |
| State Senate Districts | 12 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 91.71% |
| African American | 0% |
| Hispanic | 3.42% |
| Asian | 0.41% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 4.46% |