| | Tensas Parish | LA | 22107 | | | | | nonmetro county (rural) | farm-dependent | https://maps.google.com/?q=TensasParish+LA |
| | Terrebonne Parish | LA | 22109 | | Houma-Bayou
Cane-Thibodaux, LA 26380 | | Central | metro county (urban) | nonspecialized | https://maps.google.com/?q=TerrebonneParish+LA |
| | Vernon Parish | LA | 22115 | | | | | nonmetro county (rural) | federal/state
government-dependent | https://maps.google.com/?q=VernonParish+Louisiana |
| | West Carroll Parish | LA | 22123 | | | | | nonmetro county (rural) | farm-dependent | https://maps.google.com/?q=WestCarrollParish+LA |
| | Winn Parish | LA | 22127 | | | | | nonmetro county (rural) | nonspecialized | https://maps.google.com/?q=WinnParish+LA |
| | Ascension Parish | LA | 22005 | | Baton Rouge, LA 12940 | Baton Rouge-Hammond, LA 132 | Central | metro county (urban) | nonspecialized | https://maps.google.com/?q=AscensionParish+LA |
| | Assumption Parish | LA | 22007 | | Baton Rouge, LA 12940 | Baton Rouge-Hammond, LA 132 | Outlying | nonmetro county (rural) | manufacturing-dependent | https://maps.google.com/?q=AssumptionParish+LA |
| | East Baton Rouge Parish | LA | 22033 | | Baton Rouge, LA 12940 | Baton Rouge-Hammond, LA 132 | Central | metro county (urban) | federal/state
government-dependent | https://maps.google.com/?q=EastBatonRougeParish+LA |
| | East Feliciana Parish | LA | 22037 | | Baton Rouge, LA 12940 | Baton Rouge-Hammond, LA 132 | Outlying | metro county (urban) | federal/state
government-dependent | https://maps.google.com/?q=EastFelicianaParish+LA |
| | Iberville Parish | LA | 22047 | | Baton Rouge, LA 12940 | Baton Rouge-Hammond, LA 132 | Central | metro county (urban) | manufacturing-dependent | https://maps.google.com/?q=IbervilleParish+LA |