| Subdistrict | Enum. district | # of links |
| Petrolia | 54 | 47 |
| Petrolia | 55 | 10 |
| Petrolia | 56 | 10 |
| Enniskillen | 32 | 5 |
| Sombra | 37 | 5 |
| Petrolia | 53 | 4 |
| London | 5 | 4 |
| Sarnia | 51 | 4 |
| Dunwich | 9 | 3 |
| Petrolia | 52 | 3 |
| London | 2 | 2 |
| Petrolia | 59 | 2 |
| Petrolia | 57 | 1 |
| St. Thomas | 28 | 1 |
| ward 4 | 51 | 1 |
| Sarnia | 47 | 1 |
| Guelph | 13 | 1 |