| Business | Phone |
| Madison County Auditor's Office 1 N Main St, London 43140 | (740) 852-9717 |
| Madison County Auto Title Office 289 Lafayette St # J, London 43140 | (740) 852-9121 |
| Madison County Commissioners 1 N Main St, London 43140 | (740) 852-2972 |
| Madison County Election Board 117 W High St, London 43140 | (740) 852-9424 |
| Madison County Engineer 825 Us Highway 42 Ne, London 43140 | (740) 852-9404 |
| Madison County Family Council 52 S Main St, London 43140 | (740) 852-0339 |
| Madison County Highway Garage 222 Garfield Ave, London 43140 | (740) 852-9530 |
| Madison County Prosecutor 23 W High St, London 43140 | (740) 852-2259 |
| Madison County Recorder's Office 1 W High St # 40, London 43140 | (740) 852-1854 |
| Madison County Waste Water 821 Us Highway 42 Ne, London 43140 | (740) 852-2661 |
| Madison Cty Common Pleasect Jd 1 N Main St, London 43140 | (740) 852-9568 |
| Ohio State Univ Ext Madison Co 217 Elm St, London 43140 | (740) 852-0975 |
| Veteran's Service Center 1 N Main St # 11, London 43140 | (740) 852-0676 |