| Business | Phone |
| Assessor-Personal Property Div 300 Main St, Union 63084 | (636) 583-6346 |
| Assessor-Real Estate Div 8 N Church St # A, Union 63084 | (636) 583-6348 |
| County Auditor 300 E Main St, Union 63084 | (636) 583-6350 |
| County Treasurer 300 E Main St # 203, Union 63084 | (636) 583-6392 |