| Subdistrict | Enum. district | # of links |
| Plympton | 25 | 289 |
| Wyoming | 56 | 11 |
| Wyoming | 57 | 7 |
| Townships 42 | 27 | 6 |
| Plympton | 21 | 4 |
| Bosanquet | 5 | 4 |
| Plympton | 27 | 3 |
| Plympton | 22 | 3 |
| Warwick | 44 | 3 |
| New Westminster | 7 | 3 |
| Sarnia | 46 | 2 |
| Sarnia | 29 | 2 |
| Forest | 49 | 2 |
| Warwick | 46 | 2 |
| Forest | 50 | 2 |
| Sarnia | 33 | 2 |
| London Township | 9 | 1 |
| London | 11 | 1 |
| Watford | 68 | 1 |
| Forest | 51 | 1 |
| Watford | 67 | 1 |
| Sarnia | 34 | 1 |
| Dawn | 1 | 1 |
| Plympton | 24 | 1 |
| Glencoe | 36 | 1 |