| | Hancock County | MS | 28045 | | Gulfport-Biloxi, MS 25060 | | Central | metro county (urban) | federal/state
government-dependent | https://maps.google.com/?q=HancockCounty+MS |
| | Harrison County | MS | 28047 | | Gulfport-Biloxi, MS 25060 | | Central | metro county (urban) | nonspecialized | https://maps.google.com/?q=HarrisonCounty+MS |
| | Jackson County | MS | 28059 | | Gulfport-Biloxi, MS 25060 | | Outlying | metro county (urban) | manufacturing-dependent | https://maps.google.com/?q=JacksonCounty+MS |
| | Stone County | MS | 28131 | | Gulfport-Biloxi, MS 25060 | | Outlying | nonmetro county (rural) | nonspecialized | https://maps.google.com/?q=StoneCounty+MS |