Chattanooga is a city located in Hamilton County, Tennessee, United States. It serves as the county seat and is situated along the Tennessee River, bordering the state of Georgia to the south. As of the 2024 estimate, the city has a population of approximately 191,496.
The city is Tennessee's fourth-most populous urban center and stands as one of the two principal cities of East Tennessee, alongside Knoxville. Chattanooga anchors the Chattanooga metropolitan area, which is the fourth-largest metropolitan statistical area in the state. The region also encompasses a larger three-state area involving southeastern Tennessee, northwestern Georgia, and northeastern Alabama.