| Business | Phone |
| Grant Parish Bldg Inspector 506 Main St, Colfax 71417 | (318) 627-3041 |
| Grant Parish Extension Svc 200 Main St 5, Colfax 71417 | (318) 627-3675 |
| Grant Parish Gas Utilits Distr 506 Main St, Colfax 71417 | (318) 627-3333 |
| Grant Parish Registrar-Voters 200 Main St, Colfax 71417 | (318) 627-9938 |