| Subdistrict | Enum. district | # of links |
| Nissouri West | 17 | 187 |
| Nissouri West Township | 16 | 13 |
| Nissouri West | 18 | 5 |
| Biddulph | 7 | 4 |
| London | 12 | 3 |
| Charlton | 40 | 3 |
| London Township | 5 | 2 |
| London | 14 | 2 |
| Nissouri East Township | 17 | 2 |
| London Township | 9 | 1 |
| Atlin | 32 | 1 |
| Toronto | 46 | 1 |
| Nissouri East | 21 | 1 |
| St. Marys | 36 | 1 |
| London Township | 6 | 1 |
| London | 30 | 1 |
| St. Thomas | 31 | 1 |
| Port Rowan | 54 | 1 |