| Business | Phone |
| Bay City City Clerk 301 Washington Ave, Bay City 48708 | (989) 894-8168 |
| Bay City City Hall 301 Washington Ave, Bay City 48708 | (989) 894-8200 |
| Bay City City Manager 301 Washington Ave 309, Bay City 48708 | (989) 894-8146 |
| Bay City Mayor 301 Washington Ave, Bay City 48708 | (989) 894-8189 |