| Business | Phone |
| Air Liquide America Corp 177 Highway 3142, Hahnville 70057 | (985) 783-6995 |
| American Enterprise Inc 141 Fashion Blvd, Hahnville 70057 | (985) 783-1836 |
| Bst 144 Elm St, Hahnville 70057 | (985) 783-9165 |
| Buts Cuts 248 Joe Louis Ln, Hahnville 70057 | (985) 783-9985 |
| Entergy Operations Waterford 17265 River Rd, Hahnville 70057 | (504) 739-6377 |
| St Charles Parish 5061 Highway 3127, Hahnville 70057 | (985) 783-0701 |
| Xata Corp 16879 River Rd, Hahnville 70057 | (985) 783-0703 |