| Business | Phone |
| Legal Aid Ontario 79 Stanley St, St Thomas N5R 3G1 | (519) 631-1190 |
| Ontario Correctional Svc 198 Talbot St, St Thomas N5P 1A9 | (519) 631-3430 |
| Ontario Community & Social Svc 427 Talbot St, St Thomas N5P 1C1 | (519) 631-3032 |
| Ontario Family Courts 145 Curtis St #2000, St Thomas N5P 3Z7 | (519) 633-2160 |
| Ontario Enforcement Offices 145 Curtis St #100, St Thomas N5P 3Z7 | (519) 631-3530 |
| Ontario Land Registry Offices 4 Wellington, St Thomas | (519) 631-3015 |
| Ontario St Thomas Psychiatric Talbot St, St Thomas | (519) 631-4787 |
| Peters, Steve 542 Talbot St, St Thomas N5P 1C4 | (519) 631-0666 |
| Elgin Community Care Access 294 Talbot St, St Thomas N5P 4E3 | (519) 631-9907 |