| | 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 |
| | 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 |
| | Allen Parish | LA | 22003 | | | | | nonmetro county (rural) | federal/state
government-dependent | https://maps.google.com/?q=AllenParish+LA |
| | Acadia Parish | LA | 22001 | | Lafayette, LA 29180 | Lafayette-New
Iberia-Opelousas, LA 318 | Outlying | metro county (urban) | nonspecialized | https://maps.google.com/?q=AcadiaParish+LA |