Marion is a town in Lauderdale County, Mississippi, United States. It is a northeastern suburb of Meridian, the county seat. The population of Marion was 1,479 at the 2010 census. The town was named for Francis Marion, a military leader known as the "Swamp Fox". Marion was Lauderdale County's seat from its founding to Reconstruction. Prior to the war, M…Marion is a town in Lauderdale County, Mississippi, United States. It is a northeastern suburb of Meridian, the county seat. The population of Marion was 1,479 at the 2010 census. The town was named for Francis Marion, a military leader known as the "Swamp Fox". Marion was Lauderdale County's seat from its founding to Reconstruction. Prior to the war, Marion was a prosperous town inhabited by numerous planters and enslaved African Americans. In 1840, it had a drugstore, two blacksmith shops, six dry goods stores, and two academies. It also had at least one newspaper, the Lauderdale Republican.