| Business | Phone |
| Department Of Veteran's Affair 61 Mccollum St 200, Hillsdale 49242 | (517) 437-3630 |
| Hillsdale Cnty 4-H Community 115 S Broad St, Hillsdale 49242 | (517) 437-7179 |
| Hillsdale Cnty Bldg Inspector 61 Mccollum St, Hillsdale 49242 | (517) 437-4130 |
| Hillsdale Cnty Emergency Prep 165 W Fayette St, Hillsdale 49242 | (517) 437-7384 |
| Hillsdale Cnty Juvenile Office 29 N Howell St, Hillsdale 49242 | (517) 437-4446 |
| Hillsdale Cnty Register-Deeds 29 N Howell St, Hillsdale 49242 | (517) 437-2231 |
| Hillsdale Cnty Road Commission 1919 Hudson Rd, Hillsdale 49242 | (517) 439-9432 |
| Hillsdale County Adult Prbtn 29 N Howell St, Hillsdale 49242 | (517) 437-3551 |
| Hillsdale County Board-Comms 29 N Howell St, Hillsdale 49242 | (517) 437-3932 |
| Hillsdale County Co-Op Ext Svc 20 Care Dr, Hillsdale 49242 | (517) 439-9301 |
| Hillsdale County Drain Comm 29 N Howell St 15, Hillsdale 49242 | (517) 437-4181 |
| Hillsdale County Equalization 29 N Howell St, Hillsdale 49242 | (517) 439-9166 |
| Hillsdale County Info Tech 29 N Howell St, Hillsdale 49242 | (517) 437-3158 |
| Hillsdale County Maintenance 29 N Howell St, Hillsdale 49242 | (517) 437-4183 |
| Hillsdale County Mapping Dept 29 N Howell St, Hillsdale 49242 | (517) 439-1059 |
| Hillsdale County Master Grdnr 20 Care Dr, Hillsdale 49242 | (517) 437-5861 |
| Hillsdale County Office 20 Care Dr, Hillsdale 49242 | (517) 437-4183 |
| Hillsdale County Prosecutor 49 N Howell St # 2, Hillsdale 49242 | (517) 439-1419 |
| Hillsdale County Road Comm 1917 Hudson Rd, Hillsdale 49242 | (517) 437-3511 |