| Business | Phone |
| Constantine Township Hall 165 Canaris St, Constantine 49042 | (269) 435-8170 |
| Constantine Sewage Disposal Constantine 49042 | (269) 435-9915 |
| Village Garage 220 W Johnson St, Constantine 49042 | (269) 435-4035 |
| Constantine Business Incubator 186 S Washington St, Constantine 49042 | (269) 435-2024 |
| Constantine Village Offices 115 White Pigeon St, Constantine 49042 | (269) 435-2085 |