| Subdistrict | Enum. district | # of links |
| Sarnia | 31 | 188 |
| Rapid | 34 | 5 |
| Plympton | 22 | 5 |
| Sarnia | 30 | 4 |
| Sarnia | 50 | 3 |
| Townships 42 | 27 | 3 |
| Sarnia | 29 | 3 |
| Sarnia | 46 | 2 |
| Sarnia | 34 | 2 |
| Sarnia | 33 | 2 |
| Sarnia | 49 | 2 |
| Enniskillen | 32 | 2 |
| Townships 10 | 19 | 1 |
| Sarnia | 48 | 1 |
| Sarnia | 32 | 1 |
| Townships 46 | 33 | 1 |
| Howard | 20 | 1 |