The Federally-defined Appalachia region for Mississippi includes the following counties:
Alcorn, Benton, Calhoun, Chickasaw, Choctaw, Clay, Itawamba, Kemper, Lee, Lowndes, Marshall, Monroe, Montgomery, Noxubee, Oktibbeha, Panola, Pontotoc, Prentiss, Tippah, Tishomingo, Union, Webster, Winston, and Yalobusha
Please refer to Appalachia Region Commission for more information.
The Jackson Metropolitan area as defined by the U.S. Census Bureau includes Hinds, Madison, and Rankin counties.
The three coastal counties in Mississippi that border the Gulf of Mexico are Hancock, Harrison, and Jackson.