Chattanooga
- County:
- Hamilton County
- County Seat:
- Yes
- Area (mi²):
- 142.352
- State:
- Tennessee
Chattanooga is a city located in Hamilton County, Tennessee. Chattanooga has a 2026 population of 191,496. It is also the county seat of Hamilton County. Chattanooga is currently growing at a rate of 1.82% annually and its population has increased by 5.06% since the most recent census, which recorded a population of 182,271 in 2020.