There are 4 US Post Offices in Benton County serving a total of 8,948 residents equating to 2,237 residents per post office. It's estimated that approximately 14,282 packages are handled across the 4 county post offices annually. Benton County is a county located in the U.S. state of Mississippi. As of the 2010 census, the population was 8,729. Its county seat is Ashland. It is locally believed that residents convinced the post-Civil War Reconstruction government that Benton County was to be named for U.S. Senator Thomas Hart Benton, but the name actually honored Confederate Brigadier General Samuel Benton of nearby Holly Springs in Marshall County. Benton County is included in the Memphis, TN-MS-AR Metropolitan Statistical Area."