
Oak Grove Washington County
- County:
- Washington County
- County Seat:
- No
- Area (mi²):
- 4.531
- State:
- Tennessee
Oak Grove is a CDP located in Washington County, Tennessee. Oak Grove has a 2025 population of 4,421. Oak Grove is currently declining at a rate of -0.02% annually but its population has increased by 1.56% since the most recent census, which recorded a population of 4,353 in 2020.
The average household income in Oak Grove is $103,877 with a poverty rate of 9.59%. The median age in Oak Grove is 49.9 years: 43.7 years for males, and 53.7 years for females.