| Business | Phone |
| Union City Diesel Plant 106 Coldwater Rd, Union City 49094 | (517) 741-8961 |
| Union City Hydro Plant Riley Rd, Union City 49094 | (517) 741-7622 |
| Union City Village Office 208 N Broadway St, Union City 49094 | (517) 741-8591 |
| Union Twp Government 221 N Broadway St, Union City 49094 | (517) 741-4169 |