| Business | Phone |
| Building Inspection 5350 Pleasant Ave, Fairfield 45014 | (513) 867-5318 |
| City Manager's Office 5350 Pleasant Ave, Fairfield 45014 | (513) 867-5350 |
| Elisha Morgan Farm Mansion 6181 Ross Rd, Fairfield 45014 | (513) 860-9530 |
| Fairfield City Council 5350 Pleasant Ave, Fairfield 45014 | (513) 867-5383 |
| Fairfield City Offices 5350 Pleasant Ave, Fairfield 45014 | (513) 867-5300 |
| Fairfield City Planning Dept 5350 Pleasant Ave, Fairfield 45014 | (513) 867-5345 |
| Hamilton Water Plant 5140 E River Rd, Fairfield 45014 | (513) 868-5993 |