| Place Name | Grand River Township (Adair County) |
| Place Type | Township |
| ZIP Code(s) | 50273 50849 50858 |
| County | Adair County |
| Area Code(s) | 641 |
| Timezone | Central Standard Time (CST) |
| Population (2021) | 97 |
| Majority Ethnicity | White 90.65% |
| US Congressional District(s) | Iowa 3rd |
| State House Districts | 20 |
| State Senate Districts | 10 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 90.65% |
| African American | 0% |
| Hispanic | 0% |
| Asian | 0% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 9.35% |