| Subdistrict | Enum. district | # of links |
| Sarnia | 52 | 17 |
| Sarnia | 47 | 11 |
| Sarnia | 34 | 10 |
| Sarnia | 50 | 9 |
| Sarnia | 51 | 7 |
| Sarnia | 53 | 4 |
| Goderich | 18 | 4 |
| Sarnia | 44 | 3 |
| Dresden | 39 | 3 |
| Sarnia | 49 | 3 |
| Chatham | 12 | 3 |
| Petrolia | 55 | 2 |
| Point Edward | 60 | 2 |
| Toronto | 1 | 2 |
| London Township | 9 | 1 |
| London | 5 | 1 |
| Sarnia | 45 | 1 |
| Sarnia | 48 | 1 |
| Sarnia | 29 | 1 |