| Subdistrict | Enum. district | # of links |
| McGillivray | 15 | 146 |
| Biddulph | 5 | 12 |
| Lucan | 32 | 5 |
| McGillivray | 16 | 5 |
| Goderich | 20 | 4 |
| London Township | 8 | 4 |
| Exeter | 39 | 3 |
| McGillivray | 17 | 3 |
| Townships 12 | 7 | 3 |
| Adelaide | 3 | 2 |
| Biddulph | 6 | 2 |
| Biddulph | 8 | 1 |
| London | 5 | 1 |
| London | 30 | 1 |
| Southwold | 24 | 1 |
| Lucan | 33 | 1 |
| London Township | 7 | 1 |
| London | 11 | 1 |
| McGillivray | 20 | 1 |
| London Township | 9 | 1 |
| Townships 50 | 39 | 1 |
| Ailsa Craig | 31 | 1 |