| Subdistrict | Enum. district | # of links |
| Sombra | 42 | 276 |
| Sombra | 40 | 37 |
| Sombra | 43 | 23 |
| Townships 2 | 5 | 10 |
| Sombra | 38 | 8 |
| Sombra | 36 | 8 |
| Wallaceburg | 47 | 7 |
| Sarnia | 49 | 6 |
| Medicine Hat | 68 | 6 |
| Sombra | 37 | 5 |
| Moore | 16 | 5 |
| Sarnia | 31 | 5 |
| Sombra | 41 | 5 |
| Wawanosh West | 15 | 4 |
| Moore | 17 | 3 |
| Moore | 13 | 3 |
| Sarnia | 34 | 2 |
| Moore | 19 | 2 |
| Sarnia | 44 | 2 |
| Westminster Township | 19 | 1 |
| Dover | 5 | 1 |
| Chatham | 58 | 1 |
| Vancouver City | 30 | 1 |
| Township 1 in ranges 28 | 10 | 1 |
| Wallaceburg | 45 | 1 |
| Collingwood | 42 | 1 |
| Caledonia | 41 | 1 |
| Sarnia | 30 | 1 |
| Chatham Township | 16 | 1 |
| Townships 5 | 1 | 1 |