| Business | Phone |
| Hamilton Township Hall 8996 E Townline Lake Rd, Harrison 48625 | (989) 539-7943 |
| Hayes Township Hall 2051 E Townline Lake Rd, Harrison 48625 | (989) 539-7128 |
| Hayes Township Of Park 2492 Fir Trl, Harrison 48625 | (989) 539-5202 |
| Municipal Garage 229 E Beech St, Harrison 48625 | (989) 539-7145 |