Marshall County is a county of the U.S. state of Alabama. As of the 2010 census the population was 93,019. Its county seat is Guntersville. A second courthouse is in Albertville. Its name is in honor of John Marshall, famous Chief Justice of the United States. Marshall County is a dry county, with the exception of the four cities of Albertville, Arab, Guntersville, and Boaz.Marshall County comprises the Albertville, AL Micropolitan Statistical Area, which is also included in the Huntsville-Decatur-Albertville, AL Combined Statistical Area.HistoryMarshall County was established on January 9, 1836.GeographyAccording to the U.S. Census Bureau, the county has a total area of, of which is land and (9.2%) is water. The Tennessee River runs both north and south within the county.