| Place Name | Walnut Lake Township |
| Place Type | Township |
| ZIP Code(s) | 71639 71662 71670 |
| County | Desha County |
| Area Code(s) | 327,870 |
| Timezone | Central Daylight Time (CDT) |
| Population (2021) | 148 |
| Majority Ethnicity | White 68.92% |
| US Congressional District(s) | Arkansas 1st |
| State House Districts | 11 |
| State Senate Districts | 25,26 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 68.92% |
| African American | 12.16% |
| Hispanic | 0% |
| Asian | 0% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 18.92% |