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