Chattanooga is a city in Hamilton County, Tennessee, United States, and its county seat. It is located along the Tennessee River and borders Georgia to the south. With a population of 181,099 in 2020, it is Tennessee's fourth-most populous city and one of the two principal cities of East Tennessee, along with Knoxville. It anchors the Chattanooga metropolitan area, Tennessee's fourth-largest metropolitan statistical area, as well as a larger three-state area that includes southeastern Tennessee, northwestern Georgia, and northeastern Alabama.
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