| Subdistrict | Enum. district | # of links |
| Parkhill | 28 | 109 |
| Sarnia | 53 | 6 |
| Owen Sound | 50 | 6 |
| Parkhill | 30 | 5 |
| Williams West | 26 | 5 |
| Sarnia | 49 | 5 |
| London | 22 | 5 |
| London | 11 | 4 |
| Brampton | 35 | 4 |
| Owen Sound | 47 | 4 |
| Westminster Township | 20 | 4 |
| Lobo | 14 | 3 |
| Sarnia | 50 | 3 |
| Williams West | 27 | 3 |
| Wyoming | 57 | 3 |
| Strathroy | 35 | 3 |
| London | 32 | 2 |
| Woodstock | 36 | 2 |
| Lucan | 33 | 2 |
| Belleville | 29 | 1 |
| London | 4 | 1 |
| Woodstock | 46 | 1 |
| McGillivray | 18 | 1 |
| Englehart | 96 | 1 |
| Kinloss | 43 | 1 |