
Walnut Grove
- County:
- Hardin County
- County Seat:
- No
- Area (mi²):
- 5.756
- State:
- Tennessee
Walnut Grove is a CDP located in Hardin County, Tennessee. Walnut Grove has a 2025 population of 212. Walnut Grove is currently declining at a rate of -5.36% annually and its population has decreased by -1.4% since the most recent census, which recorded a population of 215 in 2020.
The average household income in Walnut Grove is $47,303 with a poverty rate of 30.84%. The median age in Walnut Grove is 22.4 years: 29 years for males, and 17 years for females.