| Subdistrict | Enum. district | # of links |
| Bosanquet | 1 | 244 |
| Bosanquet | 2 | 20 |
| Thedford | 66 | 9 |
| Arkona | 63 | 8 |
| Forest | 51 | 5 |
| Warwick | 46 | 3 |
| Gosfield South | 17 | 3 |
| Sarnia | 48 | 3 |
| Sarnia | 32 | 2 |
| Warwick | 47 | 2 |
| Strathroy | 35 | 2 |
| Bosanquet | 3 | 2 |
| Adelaide | 4 | 2 |
| Sarnia | 44 | 2 |
| Warwick | 48 | 2 |
| Forest | 49 | 1 |
| Wallaceburg | 45 | 1 |
| Niagara Falls | 46 | 1 |
| Sarnia | 50 | 1 |
| Stanley | 16 | 1 |