| Place Name | Walnut Hill |
| Place Type | Census Designated Place |
| ZIP Code(s) | 37617 37620 |
| County | Sullivan County |
| Area Code(s) | 423 |
| Timezone | Eastern Daylight Time (EDT) |
| Population (2022) | 2,707 |
| Population Growth Rate (2010-19) | -2.63% |
| Majority Ethnicity | White 96.9% |
| Metro/Micro Stats Area | Kingsport-Bristol, TN-VA |
| US Congressional District(s) | Tennessee 1st |
| State House Districts | 3 |
| State Senate Districts | 4 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 96.9% |
| African American | 0% |
| Hispanic | 3.1% |
| Asian | 0% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 0% |