Gallatin is a city in and the county seat of Sumner County, Tennessee, United States, along a navigable tributary of the Cumberland River. The population was 23,230 at the 2000 census. Named for U.S. Secretary of the Treasury Albert Gallatin, the city was established and made the county seat of Sumner County in 1802. Several national companies have facilities or headquarters in Gallatin, including GAP, Inc. , RR Donnelley, and Servpro Industries, Inc. Gallatin was formerly the headquarters of Dot Records. The city is also home to Volunteer State Community College, the largest two-year college in the state.