Blaine
- County:
- Grainger County
- County Seat:
- No
- Area (mi²):
- 9.516
- State:
- Tennessee
Blaine is a city located in Grainger County, Tennessee. Blaine has a 2026 population of 2,167. Blaine is currently growing at a rate of 1.07% annually and its population has increased by 4.18% since the most recent census, which recorded a population of 2,080 in 2020.