Enumerated Area | pre1851 | 1851 | 1861 | 1871 | 1881 | 1891 | 1901 | 1911 |
Oakland Twp | BRA | BRA | BRA | BRA | OXF | OXF | BRA | |
Oakland Village | BRA | |||||||
Oakley Twp | MUS | MUS | ONT | ONT | MUS | |||
Oakville Town | HTN | HTN | HTN | HTN | HTN | HTN | ||
Obabikon Lake | TBRR | |||||||
O'Brien Siding | ALG | |||||||
Obrig Twp | NIP | |||||||
O'Connor | TBRR | |||||||
Odessa Village | LnA | |||||||
Ogden | ALG | |||||||
Ohsweken Village | BRA | |||||||
Oil City | LAM | |||||||
Oil Springs Village | LAM | LAM | LAM | LAM | LAM | |||
Ojibwa Indian Settlement Twp | MID | |||||||
Ojibwa Indians | ALG | |||||||
Old Mille Roches | STO | |||||||
Olden Twp | FRO | LnA | LnA | LnA | LnA | FRO | ||
Oliver Twp | ALG | TBRR | ||||||
Olrig | NIP | |||||||
Olser Twp | NIP | |||||||
Omemee Village | VIC | VIC | VIC | VIC | ||||
Ompah | FRO | |||||||
Oneida Indian Reserve | HLD | MID | ||||||
Oneida Twp | HLD | HLD | HLD | HLD | HLD | HLD | HLD | |
Onondago Twp | BRA | BRA | BRA | BRA | BRA | BRA | BRA | BRA |
Onondago Village | BRA | |||||||
Ops Twp | VIC | VIC | VIC | VIC | VIC | VIC | VIC | |
Orangeville Town | WGT | WGT | WGT | WGT | DUF | |||
Orford Maranian Reserve | KEN | |||||||
Orford Twp | KEN | KEN | KEN | KEN | ELG | ELG | KEN | |
Orillia Town | SIM | SIM | SIM | SIM | SIM | |||
Orillia Twp | SIM | SIM | SIM | SIM | SIM | SIM | SIM | |
Orland Village | NUL | |||||||
Oro Station | SIM | SIM | ||||||
Oro Twp | SIM | SIM | SIM | SIM | SIM | SIM | SIM | |
Orrville Village | PSD | |||||||
Orton Village | DUF | |||||||
Orwell Village | ELG | |||||||
Osgoode Twp | RUS | MS | RUS | RUS | RUS | RUS | RUS | |
Osgoode Twp | CAR | CAR | ||||||
Oshawa Town | ONT | ONT | ONT | ONT | ONT | |||
Oshawa Village | ONT | |||||||
Osnabruck Twp | STO | STO | STO | STO | STO | STO | STO | |
Oso Twp | FRO | LnA | LnA | LnA | LnA | FRO | ||
Osprey Twp | GRY | GRY | GRY | GRY | GRY | GRY | GRY | |
Ospring | WGT | |||||||
Otonabee Twp | PET | PET | PET | PET | PET | PET | PET | PET |
Ottawa City | CAR | CAR | CAR | CAR | CAR | CAR | ||
Ottawa East Village | CAR | CAR | CAR | |||||
Ottawa South | CAR | |||||||
Otter | ALG | |||||||
Otter Station | ALG | |||||||
Otter Tail Twp | ALG | |||||||
Otterville Village | OXF | |||||||
Owen Sound Town | GRY | GRY | GRY | GRY | GRY | GRY | ||
Oxdorf | ALG | |||||||
Oxenden Village | GRY | GRY | GRY | |||||
Oxford (Oxford-on-the-Rideau) Twp | GVL | GVL | GVL | GVL | GVL | GVL | GVL | GVL |
Oxford Centre | OXF | |||||||
Oxford East Twp | OXF | OXF | OXF | OXF | OXF | OXF | OXF | |
Oxford Mills Village | GVL | |||||||
Oxford North Twp | OXF | OXF | OXF | OXF | OXF | OXF | ||
Oxford West Twp | OXF | OXF | OXF | OXF | OXF | OXF | OXF |