| Subdistrict | Enum. district | # of links |
| London Township | 13 | 167 |
| London | 12 | 29 |
| London Township | 5 | 12 |
| London Township | 7 | 12 |
| London Township | 11 | 8 |
| St. Marys | 34 | 5 |
| London | 5 | 4 |
| London Township | 8 | 4 |
| London Township | 6 | 4 |
| Clinton | 8 | 2 |
| London | 13 | 2 |
| Metcalfe | 22 | 1 |
| Nissouri East Township | 15 | 1 |
| London | 8 | 1 |
| London | 4 | 1 |
| Biddulph | 9 | 1 |
| London Township | 9 | 1 |
| Nissouri West | 18 | 1 |