| Subdistrict | Enum. district | # of links |
| Wyoming | 56 | 145 |
| Wyoming | 57 | 24 |
| Brunel | 2 | 6 |
| Petrolia | 57 | 4 |
| Wallaceburg | 46 | 4 |
| Glencoe | 37 | 4 |
| Sarnia | 46 | 3 |
| Adelaide | 3 | 3 |
| Petrolia | 58 | 3 |
| London Township | 10 | 2 |
| ward 3 | 7 | 2 |
| Plympton | 25 | 1 |
| London | 12 | 1 |
| Township 25 in ranges 4 | 36 | 1 |
| London | 4 | 1 |
| Plympton | 28 | 1 |
| Townships 5 | 58 | 1 |
| Warwick | 44 | 1 |
| Aylmer | 25 | 1 |
| Moore | 13 | 1 |
| Plympton | 27 | 1 |
| Township 30 in ranges 7 | 38 | 1 |