Mississippi County Map: All 82 Counties

Under the traditional "beat system," each of the five supervisors elected to a county board functioned as an independent potentate within their district (beat). Each supervisor owned a separate fleet of county graders, dump trucks, and road crews, paving roads and hiring personnel with minimal central coordination.

Following extensive federal investigations and advocacy by business groups seeking modernized infrastructure, the Mississippi Legislature passed the County Unit System Act of 1988. This legislation required counties to either adopt a unified county road department under a professional county engineer or face voter referendums.

While many counties adopted the unit system, the cultural and political legacy of the five supervisor beats remains a defining element of Mississippi local government and electoral redistricting.

The Mississippi Delta—comprising counties such as Sunflower, Leflore, Coahoma, Washington, and Bolivar between the Yazoo and Mississippi rivers—is famous as the birthplace of the blues and one of the richest alluvial cotton, soybean, and catfish farming regions on earth.

In contrast, the Piney Woods of south-central Mississippi (Jones, Forrest, Perry, Wayne) developed an economy centered on longleaf pine timber, naval stores, and paper mills, fostering an independent, historically populist political culture.

Along the Gulf of Mexico, Harrison, Jackson, and Hancock counties form a dynamic coastal economy driven by the Port of Pascagoula, Ingalls Shipbuilding (the nation's premier builder of Navy surface warships), NASA's Stennis Space Center, and casino gaming in Biloxi and Gulfport.