| Enumerated Area | pre1851 | 1851 | 1861 | 1871 | 1881 | 1891 | 1901 | 1911 |
| Gainsborough Twp | LIN | LIN | LIN | LIN | LIN | LIN | LIN | LIN |
| Galbraith Twp | ALG | ALG | ||||||
| Galetta Village | CAR | |||||||
| Galt Town | WAT | WAT | WAT | WAT | WAT | WAT | WAT | |
| Galway Twp | PET | PET | PET | VIC | VIC | PET | ||
| Gamebridge Village | ONT | |||||||
| Gananoque Town | LEE | LEE | LEE | LEE | LEE | |||
| Garafraxa East Twp | WGT | WGT | WGT | WGT | WGT | DUF | ||
| Garafraxa Twp | WGT | WGT | ||||||
| Garafraxa West Twp | WGT | WGT | WGT | WGT | WGT | |||
| Garden Hill Village | DUR | |||||||
| Garden Island Village | FRO | FRO | FRO | FRO | FRO | |||
| Garden River Indian Reserve | ALG | |||||||
| Garden River Twp | ALG | ALG | ALG | |||||
| Garden River Village | ALG | |||||||
| Gardenville | PED | |||||||
| Garrow | NIP | |||||||
| Garson Twp | NIP | NIP | ||||||
| Gaudette | ALG | |||||||
| Gauthier | NIP | |||||||
| Gelert Village | VIC | |||||||
| Geneva Lake Twp | NIP | |||||||
| Georgetown Village | HTN | HTN | HTN | HTN | HTN | HTN | ||
| Georgina Island | YOR | |||||||
| Georgina Twp | MS | YOR | YOR | YOR | YOR | YOR | YOR | |
| German | NIP | |||||||
| Gertrude Mine | NIP | |||||||
| Gesto Village | ESS | |||||||
| Gibbons | NIP | NIP | ||||||
| Gibson Twp | MUS | MUS | MUS | |||||
| Gillies Twp | ALG | TBRR | ||||||
| Gilmour Village | HAS | |||||||
| Girdwood | ALG | |||||||
| Girl | ALG | |||||||
| Glackmeyer | NIP | |||||||
| Gladman | NIP | |||||||
| Gladstone | STO | STO | ||||||
| Gladstone Twp | ALG | ALG | ||||||
| Glammis Village | BRU | |||||||
| Glamorgan Twp | PET | PET | PET | PET | VIC | |||
| Glanford Twp | WTW | WTW | WTW | WTW | WTW | WTW | WTW | |
| Glanford Village | WTW | |||||||
| Glasgow Station | REN | |||||||
| Glebe | STO | |||||||
| Glen Allan Village | WGT | |||||||
| Glen Huron Village | SIM | |||||||
| Glen Lomond Village | WGT | |||||||
| Glen Meyer Village | NRF | |||||||
| Glen Morris Village | BRA | |||||||
| Glen Robertson Village | GLE | |||||||
| Glencairn | SIM | |||||||
| Glencoe Village | MID | MID | MID | MID | ||||
| Glenelg Twp | GRY | GRY | GRY | GRY | GRY | GRY | GRY | |
| Glennevis Village | GLE | |||||||
| Glenroy Village | GLE | |||||||
| Gloucester Twp | CAR | CAR | RUS | RUS | RUS | RUS | RUS | |
| Goderich Town | HUR | HUR | HUR | HUR | HUR | HUR | HUR | |
| Goderich Twp | HUR | HUR | HUR | HUR | HUR | HUR | HUR | |
| Gold Rock | ALG | |||||||
| Golden Lake Village | REN | |||||||
| Good Lake | TBRR | |||||||
| Gooderham Village | VIC | |||||||
| Goodwood Village | ONT | |||||||
| Gordon Twp | ALG | ALG | ALG | ALG | ||||
| Gore Bay Indian Reserves | ALG | |||||||
| Gore Bay Town | ALG | ALG | ALG | |||||
| Gores Landing | NUL | |||||||
| Gorham Twp | TBRR | |||||||
| Gosfield North Twp | ESS | ESS | ||||||
| Gosfield South Twp | ESS | ESS | ||||||
| Gosfield Twp | ESS | ESS | ESS | ESS | ||||
| Goshen Twp | ALG | |||||||
| Gough Twp | ALG | |||||||
| Goulais Bay | ALG | ALG | ||||||
| Goulais Bay Indian Reserve | ALG | |||||||
| Goulburn Twp | CAR | CAR | CAR | CAR | CAR | CAR | CAR | CAR |
| Gould Twp | ALG | |||||||
| Gowganda Mining District | NIP | |||||||
| Gowganda Village | NIP | |||||||
| Graham Twp | ALG | NIP | ALG | |||||
| Graham Village | TBRR | |||||||
| Grand Pointe Twp | ALG | |||||||
| Grand Trunk Railroad | ALG | |||||||
| Grand Valley Village | WGT | DUF | ||||||
| Grant Twp | NIP | NIP | ||||||
| Grantham Twp | LIN | LIN | LIN | LIN | LIN | LIN | ||
| Grassett | ALG | ALG | ||||||
| Grassett Station | ALG | |||||||
| Grassy Narrows | TBRR | |||||||
| Grattan Twp | REN | REN | REN | REN | REN | REN | REN | |
| Gravel River | ALG | |||||||
| Gravenhurst Town | MUS | SIM | SIM | MUS | ||||
| Great | ALG | |||||||
| Green Point | ONT | |||||||
| Green Valley Village | GLE | |||||||
| Greenfield Village | GLE | |||||||
| Greenock Twp | BRU | BRU | BRU | BRU | BRU | BRU | BRU | |
| Greensville Village | WTW | |||||||
| Greenway | HUR | |||||||
| Greenwood | ONT | |||||||
| Grey Twp | HUR | HUR | HUR | HUR | HUR | HUR | HUR | |
| Griffith Twp | REN | REN | REN | REN | REN | REN | ||
| Grigg | NIP | |||||||
| Grimsby North Twp | WTW | WTW | LIN | |||||
| Grimsby South Twp | WTW | WTW | LIN | |||||
| Grimsby Twp | LIN | LIN | LIN | LIN | ||||
| Grimsby Village | LIN | WTW | WTW | LIN | ||||
| Grimsthorpe Twp | HAS | HAS | HAS | HAS | HAS | |||
| Gross | NIP | |||||||
| Guelph | WGT | |||||||
| Guelph City | WGT | WGT | WGT | WGT | WGT | WGT | ||
| Guelph Twp | WGT | WGT | WGT | WGT | WGT | WGT | ||
| Guibord | NIP | |||||||
| Guilford Twp | PET | PET | VIC | |||||
| Gull Bay 34 | TBRR | |||||||
| Gull Bay Indian Reserve | TBRR | |||||||
| Gurd Twp | MUS | MUS | MUS | PSD | ||||
| Gurney River | ALG | |||||||
| Guthrie Twp | NIP | |||||||
| Gwillimbury East Twp | YOR | YOR | YOR | YOR | YOR | YOR | YOR | |
| Gwillimbury North Twp | YOR | YOR | YOR | YOR | YOR | YOR | YOR | |
| Gwillimbury Twp | SIM | |||||||
| Gwillimbury West Twp | SIM | SIM | SIM | YOR | YOR | SIM |