| | Tishomingo County | MS | 28141 | | | | | nonmetro county (rural) | manufacturing-dependent | https://maps.google.com/?q=TishomingoCounty+MS |
| | Tunica County | MS | 28143 | | Memphis, TN-MS-AR 32820 | Memphis-Clarksdale-Forrest
City, TN-MS-AR 368 | Outlying | metro county (urban) | recreation | https://maps.google.com/?q=TunicaCounty+MS |
| | Union County | MS | 28145 | | | | | nonmetro county (rural) | manufacturing-dependent | https://maps.google.com/?q=UnionCounty+MS |
| | Walthall County | MS | 28147 | | McComb, MS 32620 | | Outlying | nonmetro county (rural) | nonspecialized | https://maps.google.com/?q=WalthallCounty+MS |
| | Warren County | MS | 28149 | | Vicksburg, MS 46980 | Jackson-Vicksburg-Brookhaven,
MS 298 | Central | nonmetro county (rural) | federal/state
government-dependent | https://maps.google.com/?q=WarrenCounty+MS |
| | Washington County | MS | 28151 | | Greenville, MS 24740 | | Central | nonmetro county (rural) | nonspecialized | https://maps.google.com/?q=WashingtonCounty+MS |
| | Wayne County | MS | 28153 | | | | | nonmetro county (rural) | nonspecialized | https://maps.google.com/?q=WayneCounty+MS |
| | Webster County | MS | 28155 | | Starkville, MS 44260 | Starkville-Columbus, MS 523 | Outlying | nonmetro county (rural) | nonspecialized | https://maps.google.com/?q=WebsterCounty+MS |
| | Wilkinson County | MS | 28157 | | | | | nonmetro county (rural) | nonspecialized | https://maps.google.com/?q=WilkinsonCounty+MS |
| | Winston County | MS | 28159 | | | | | nonmetro county (rural) | nonspecialized | https://maps.google.com/?q=WinstonCounty+MS |