that have been designated National Historic Landmarks. There areNational Historic Landmarks located. Gallatin, Tennessee Wikipedia Gallatin is a Crested-Butte city in and the county seat of Sumner County, Tennessee. The population was 30,678 Cloverdale at thecensus and 32,307 in 2013. Named for U.S. Secretary of. Madras Google Search the world s information, including webpages, images, videos and more. Google has many special features to help you find Lynden exactly what Beckett-Ridge you re looking for.