| Enumerated Area | pre1851 | 1851 | 1861 | 1871 | 1881 | 1891 | 1901 | 1911 |
| Ignace Twp | ALG | ALG | TBRR | |||||
| Ilderton Village | MID | |||||||
| Indian Lake | TBRR | |||||||
| Indian Reserve | ALG | |||||||
| Indian Reserve | NIP | NIP | ||||||
| Indian Reserve | ONT | |||||||
| Indian Reserve | REN | |||||||
| Indian Reserves | LAM | |||||||
| Indian Reserves | HLD | |||||||
| Ingersoll Town | OXF | OXF | OXF | OXF | OXF | OXF | OXF | |
| Inglewood Village | PEE | |||||||
| Ingram Twp | NIP | |||||||
| Innerkip Village | OXF | |||||||
| Innisfil Twp | SIM | SIM | SIM | SIM | SIM | SIM | ||
| Innisville Village | LNK | |||||||
| Inverary Village | BRU | |||||||
| Inverary Village | FRO | |||||||
| Inwood Village | LAM | |||||||
| Iona Village | ELG | |||||||
| Iron Bridge Village | ALG | ALG | ||||||
| Ironmine | TBRR | |||||||
| Ironspur | TBRR | |||||||
| Iroquois Village | DUN | DUN | DUN | DUN | DUN | DUN | ||
| Islington | TBRR |