| Place Name | Walnut Township (Atchison County) |
| Place Type | Township |
| ZIP Code(s) | 64098 64484 66002 |
| County | Atchison County |
| Area Code(s) | 913 |
| Timezone | Central Standard Time (CST) |
| Population (2021) | 222 |
| Majority Ethnicity | White 100% |
| Metro/Micro Stats Area | Atchison, KS |
| US Congressional District(s) | Kansas 2nd |
| State House Districts | 63 |
| State Senate Districts | 1 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 100% |
| African American | 0% |
| Hispanic | 0% |
| Asian | 0% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 0% |