| Subdistrict | Enum. district | # of links |
| Sombra | 37 | 184 |
| Sombra | 38 | 36 |
| Sombra | 42 | 21 |
| Moore | 16 | 18 |
| Dawn | 8 | 13 |
| Sombra | 43 | 12 |
| Dresden | 39 | 9 |
| Leamington | 54 | 7 |
| Wallaceburg | 47 | 7 |
| Raleigh | 21 | 6 |
| Sombra | 39 | 5 |
| Sarnia | 30 | 5 |
| Brantford | 9 | 4 |
| Sarnia | 49 | 4 |
| Sarnia | 45 | 3 |
| Moore | 15 | 3 |
| Sarnia | 52 | 3 |
| Township 29 in ranges 5 | 7 | 3 |
| Moore | 13 | 2 |
| Dawn | 1 | 1 |
| Brantford | 22 | 1 |
| Moore | 19 | 1 |
| Sarnia | 47 | 1 |
| Camden | 6 | 1 |
| Sarnia | 33 | 1 |
| Westminster Township | 19 | 1 |
| Sarnia | 51 | 1 |
| Plympton | 21 | 1 |
| Sombra | 40 | 1 |