| Business | Phone |
| Allegan County Adm Dept 113 Chestnut St, Allegan 49010 | (269) 673-0205 |
| Allegan County Comm Mental 3285 122nd Ave, Allegan 49010 | (269) 673-6617 |
| Allegan County Information Svc 113 Chestnut St, Allegan 49010 | (269) 673-0470 |
| Allegan County Drain Cmmssnr 113 Chestnut St, Allegan 49010 | (269) 673-0440 |
| Allegan County Equalization 113 Chestnut St, Allegan 49010 | (269) 673-0230 |
| Allegan County Government 113 Chestnut St, Allegan 49010 | (269) 673-0242 |
| Allegan County Hearing & Vsn 2233 33rd St, Allegan 49010 | (269) 673-5411 |
| Allegan County Planning Cmmssn 113 Chestnut St, Allegan 49010 | (269) 673-0377 |
| Allegan County Road Commission 1308 Lincoln Rd, Allegan 49010 | (269) 673-2184 |
| Allegan County Small Claims 113 Chestnut St, Allegan 49010 | (269) 673-0355 |
| Youth Home Allegan County 2243 33rd St, Allegan 49010 | (269) 673-4167 |
| Animal Shelter 2283 33rd St, Allegan 49010 | (269) 673-0519 |
| Central Dispatch 3271 122nd Ave, Allegan 49010 | (269) 673-3899 |
| Cooperative Extension 3255 122nd Ave 101, Allegan 49010 | (269) 673-0370 |
| Facilities Management 113 Chestnut St, Allegan 49010 | (269) 673-0220 |
| Register Of Deeds 113 Chestnut St, Allegan 49010 | (269) 673-0390 |
| Safe Harbor Child Advocacy Ctr 402 Trowbridge St, Allegan 49010 | (269) 673-3791 |