The Northern Region includes the following counties: Alcorn, Benton, Calhoun, Chickasaw, De Soto, Grenada, Itawamba, Lafayette, Lee, Marshall, Monroe, Panola, Pontotoc, Prentiss, Tate, Tippah, Tishomingo, Union, Yalobusha.
The Delta Region includes the following counties: Bolivar, Carroll, Coahoma, Holmes, Humphreys, Issaquena, Leflore, Quitman, Sharkey, Sunflower, Tallahatchie, Tunica, Washington, Yazoo.
The East Central Region includes the following counties: Attalla, Choctaw, Clarke, Clay, Jasper, Kemper, Lauderdale, Leake, Lowndes, Montgomery, Neshoba, Newton, Noxubee, Oktibbeha, Scott, Smith, Webster, Winston.
The Capital-River Region includes the following counties: Adams, Amite, Claiborne, Copiah, Franklin, Hinds, Jefferson, Lawrence, Lincoln, Madison, Pike, Rankin, Simpson, Walthall, Warren, Wilkinson.
The Coastal Region includes the following counties: Covington, Forest, George, Greene, Hancock, Harrison, Jackson, Jefferson Davis, Jones, Lamar, Marion, Pearl River, Perry, Stone, Wayne.