| Subdistrict | Enum. district | # of links |
| Brooke | 9 | 180 |
| Brooke | 8 | 78 |
| Alvinston | 62 | 18 |
| Alvinston | 61 | 10 |
| Aylmer | 26 | 7 |
| Euphemia | 39 | 7 |
| Townships 37 | 87 | 5 |
| Moore | 17 | 4 |
| Zone | 34 | 4 |
| Dawn | 3 | 4 |
| Townships 21 | 20 | 3 |
| Sarnia | 50 | 3 |
| Enniskillen | 21 | 3 |
| Amherstburg | 45 | 3 |
| Dawn | 4 | 3 |
| Enniskillen | 24 | 3 |
| Dawn | 5 | 2 |
| Oil Springs | 64 | 2 |
| Arkona | 63 | 2 |
| Howard | 23 | 2 |
| Mosa | 24 | 1 |
| Caradoc Township | 3 | 1 |
| Sombra | 43 | 1 |
| Moore | 18 | 1 |
| London | 13 | 1 |
| Brooke | 11 | 1 |
| Chatham | 50 | 1 |
| Niagara Falls | 46 | 1 |
| Sarnia | 30 | 1 |
| Township 38 in ranges 26 | 84 | 1 |
| Howard | 20 | 1 |
| Dawn | 9 | 1 |
| Adelaide | 3 | 1 |