Chattanooga is a city in the U.S. state of Tennessee, with a population of 177,571 in 2016. The fourth-largest Tennessee city, it is the seat of Hamilton County. Located in southeastern Tennessee, on the Tennessee River, served by multiple railroads and Interstate highways, Chattanooga is a transit hub. Chattanooga lies northwest of Atlanta, Georgia, southwest of Knoxville, Tennessee, southeast of Nashville, Tennessee, northeast of Huntsville, Alabama, and northeast of Birmingham, Alabama.
Phone Area Codes in Chattanooga, TN: 423

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