| Place Name | Walnut Township (Appanoose County) |
| Place Type | Township |
| ZIP Code(s) | 52544 52571 52574 |
| County | Appanoose County |
| Area Code(s) | 641 |
| Timezone | Central Standard Time (CST) |
| Population (2021) | 707 |
| Majority Ethnicity | White 93.33% |
| US Congressional District(s) | Iowa 2nd |
| State House Districts | 80 |
| State Senate Districts | 40 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 93.33% |
| African American | 0.57% |
| Hispanic | 0% |
| Asian | 0% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 6.1% |