| Subdistrict | Enum. district | # of links |
| Sombra | 43 | 265 |
| Sombra | 40 | 103 |
| Sombra | 42 | 21 |
| Sarnia | 52 | 16 |
| Sombra | 39 | 13 |
| Wallaceburg | 46 | 11 |
| Sombra | 41 | 8 |
| Moore | 12 | 8 |
| Townships 51 | 5 | 8 |
| Sarnia | 44 | 6 |
| Berlin | 36 | 5 |
| Dover | 8 | 5 |
| Townships 41 | 3 | 5 |
| Moore | 19 | 4 |
| ward 4 | 41 | 4 |
| Townships 7 | 20 | 4 |
| Stouffville | 36 | 4 |
| Wyoming | 57 | 3 |
| Townships 23 | 55 | 3 |
| West half of township 55 in range 23 west of the 4th M | 13 | 3 |
| Port Stanley | 28 | 3 |
| Clinton | 17 | 3 |
| Dorchester North Township | 4 | 3 |
| Townships 41 | 1 | 3 |
| Galt | 14 | 3 |
| Alvinston | 62 | 2 |
| Sarnia | 32 | 2 |
| Township 4 in range 22 west of the 1st M | 20 | 2 |
| Sombra | 37 | 2 |
| Townships 1 | 13 | 2 |
| Winnipeg | 15 | 2 |
| Plympton | 28 | 2 |
| Winnipeg | 19 | 1 |
| London | 8 | 1 |
| Townships 7 | 41 | 1 |
| Bayham | 1 | 1 |
| Sarnia | 51 | 1 |
| Townships 31 | 74 | 1 |
| Dawn | 5 | 1 |
| Sarnia | 53 | 1 |
| Sombra | 36 | 1 |
| Enniskillen | 33 | 1 |
| Moore | 17 | 1 |
| Oxford North | 24 | 1 |
| Courtright | 54 | 1 |
| Chatham | 11 | 1 |
| Wallaceburg | 45 | 1 |
| Townships 38 | 78 | 1 |
| Thamesville | 48 | 1 |