Clarksville
- County:
- Montgomery County
- County Seat:
- Yes
- Area (mi²):
- 100.144
- State:
- Tennessee
Clarksville is a city located in Montgomery County, Tennessee. Clarksville has a 2026 population of 185,690. It is also the county seat of Montgomery County. Clarksville is currently growing at a rate of 2.51% annually and its population has increased by 10.84% since the most recent census, which recorded a population of 167,533 in 2020.