| Subdistrict | Enum. district | # of links |
| Biddulph | 7 | 12 |
| St. Marys | 35 | 9 |
| Blanchard | 3 | 7 |
| St. Marys | 36 | 5 |
| Nissouri West | 18 | 5 |
| Blanchard | 4 | 4 |
| Usborne | 31 | 2 |
| St. Marys | 34 | 2 |
| Exeter | 38 | 2 |
| Blanchard Township | 6 | 1 |
| Stanley | 16 | 1 |
| Nissouri West | 17 | 1 |
| Goderich | 19 | 1 |
| London Township | 9 | 1 |