Ontario is the most populous province in Canada with 14,223,942 residents as of 2021 and is third-largest in land area at 892412km2.[1] Ontario's 444 municipalities[2] cover only of the province's land mass yet are home to of its population. These municipalities provide local or regional municipal government services within either a single-tier or shared two-tier municipal structure.[3]
A municipality in Ontario is "a geographic area whose inhabitants are incorporated" according to the Municipal Act, 2001.[4] Ontario's three municipality types include upper and lower-tier municipalities within the two-tier structure, and single-tier municipalities (unitary authorities) that are exempt from the two-tier structure.[3] Single and lower-tier municipalities are grouped together as local municipalities.[4] Of Ontario's 444 municipalities, 30 of them are upper-tier municipalities and 414 are local municipalities—241 lower-tier municipalities and 173 single-tier municipalities.
The Municipal Act, 2001 is the legislation that enables incorporation and stipulates governance of Ontario's municipalities, excluding the City of Toronto, which is subject to the City of Toronto Act, 2006.[5] The Municipal Act, 2001 provides lower and single-tier municipalities with the authority to incorporate as cities, towns, villages, townships, or generically as municipalities.[3] There are no minimum population thresholds or other requirements for these municipal sub-types. A municipality can change its status to any of these so long as its resulting name is not being used by another municipality.[6] For upper-tier municipalities, the act provides them with the authority to incorporate as counties, regions and district municipalities.[3] [7]
Ontario's largest municipality by population is the City of Toronto with 2,794,356 residents, while the largest by land area is the City of Greater Sudbury at 3186.26km2. The City of Ottawa, Canada's capital city, is the province's second-most populous municipality with 1,017,449 residents. Ontario's smallest municipality by population is the Township of Cockburn Island with 16 residents while the smallest by land area is the Village of Newbury at 1.77km2. The first community to incorporate as a municipality in Ontario was Brockville in 1832.[8]
Ontario's Municipal Act, 2001 defines upper-municipality as "a municipality of which two or more lower-tier municipalities form part for municipal purposes".[4] Ontario has 30 upper-tier municipalities that comprise multiple lower-tier municipalities,[7] which have a total population of 7,090,079, a total land area of 87135.68km2. These upper-tier municipalities include 19 counties, 3 united counties and 8 regional municipalities or regions, all of which represent 30 of Ontario's 49 census divisions.[4] [9] Regional governments are responsible for arterial roads, health services, policing, region-wide land use planning and development, sewer and water systems, social services, transit, and waste disposal, whereas county governments have the lesser responsibilities of arterial roads, county land use planning, health services, and social services.[7]
| Municipal sub-type | 2021 Census of Population | ||||
|---|---|---|---|---|---|
| Population (2021) | Population (2016) | Change | Land area (km2) | Population density (/km2) | |
| Bruce | County | ||||
| Dufferin | County | ||||
| Durham | Regional municipality | ||||
| Elgin | County | ||||
| Essex | County | ||||
| Frontenac | County | ||||
| Grey | County | ||||
| Haliburton | County | ||||
| Halton | Regional municipality | ||||
| Hastings | County | ||||
| Huron | County | ||||
| Lambton | County | ||||
| Lanark | County | ||||
| Leeds and Grenville | United counties | ||||
| Lennox and Addington | County | ||||
| Middlesex | County | ||||
| Muskoka | Regional municipality | ||||
| Niagara | Regional municipality | ||||
| Northumberland | County | ||||
| Oxford | Regional municipality | ||||
| Peel | Regional municipality | ||||
| Perth | County | ||||
| Peterborough | County | ||||
| Prescott and Russell | United counties | ||||
| Renfrew | County | ||||
| Simcoe | County | ||||
| United counties | |||||
| Waterloo | Regional municipality | ||||
| Wellington | County | ||||
| York | Regional municipality | ||||
| Total upper-tier municipalities | |||||
| Total counties | |||||
| Total united counties | |||||
| Total regional municipalities | |||||
| Province of Ontario | |||||
Ontario's Municipal Act, 2001 defines local municipality as "a single-tier municipality or a lower-tier municipality".[4] Combined, Ontario has 414 local municipalities comprising 173 single-tier municipalities and 241 lower-tier municipalities. The 414 local municipalities, which include 51 cities, 64 municipalities, 89 towns, 199 townships, and 11 villages, have a total population of 14,134,681, a total land area of 154274km2. These totals represent of Ontario's population and of its land area.
Ontario's Municipal Act, 2001 defines a single-tier municipality as "a municipality, other than an upper-tier municipality, that does not form part of an upper-tier municipality for municipal purposes".[4] In southern Ontario, single-tier municipalities are either politically separate from but geographically within neighbouring counties or were formed through the amalgamation of upper-tier and lower-tier municipalities. All municipalities in northern Ontario are single-tier municipalities as upper-tier municipalities are not present. Single-tier municipalities provide for all local government services.[7] Ontario has 173 single-tier municipalities comprising 32 cities, 23 municipalities, 28 towns, 85 townships, and 5 villages.
Ontario's Municipal Act, 2001 defines a lower-tier municipality as "a municipality that forms part of an upper-tier municipality for municipal purposes".[4] Ontario has 241 lower-tier municipalities comprising 19 cities, 41 municipalities, 61 towns, 114 townships and 6 villages.[7] Within regions, they are responsible for providing certain local services that are not provided by the regional municipality.[7] Within counties, they are responsible for providing a wider range of local services since counties as upper-tier municipalities provide fewer local services than regions.[7]
| Status | type | Census division[11] [12] [13] | 2021 Census of Population[14] | |||||
|---|---|---|---|---|---|---|---|---|
| Population (2021) | Population (2016) | Change | Land area (km2) | Population density (/km2) | ||||
| Addington Highlands | Lower-tier | Township | Lennox and Addington | |||||
| Adelaide Metcalfe | Lower-tier | Township | ||||||
| Adjala-Tosorontio | Lower-tier | Township | ||||||
| Admaston/Bromley | Lower-tier | Township | Renfrew | |||||
| Ajax | Lower-tier | Town | ||||||
| Alberton | Single-tier | Township | ||||||
| Alfred and Plantagenet | Lower-tier | Township | ||||||
| Algonquin Highlands | Lower-tier | Township | Haliburton | |||||
| Alnwick/Haldimand | Lower-tier | Township | ||||||
| Amaranth | Lower-tier | Township | ||||||
| Amherstburg | Lower-tier | Town | Essex | |||||
| The Archipelago | Single-tier | Township | ||||||
| Armour | Single-tier | Township | ||||||
| Armstrong | Single-tier | Township | ||||||
| Arnprior | Lower-tier | Town | Renfrew | |||||
| Arran–Elderslie | Lower-tier | Municipality | ||||||
| Ashfield–Colborne–Wawanosh | Lower-tier | Township | ||||||
| Asphodel–Norwood | Lower-tier | Township | ||||||
| Assiginack | Single-tier | Township | ||||||
| Athens | Lower-tier | Township | ||||||
| Atikokan | Single-tier | Town | ||||||
| Augusta | Lower-tier | Township | ||||||
| Aurora | Lower-tier | Town | ||||||
| Aylmer | Lower-tier | Town | ||||||
| Baldwin | Single-tier | Township | ||||||
| Bancroft | Lower-tier | Town | ||||||
| Barrie | Single-tier | City | ||||||
| Bayham | Lower-tier | Municipality | ||||||
| Beckwith | Lower-tier | Township | Lanark | |||||
| Belleville | Single-tier | City | ||||||
| Billings | Single-tier | Township | ||||||
| Black River-Matheson | Single-tier | Township | ||||||
| Blandford-Blenheim | Lower-tier | Township | ||||||
| Blind River | Single-tier | Town | ||||||
| The Blue Mountains | Lower-tier | Town | ||||||
| Bluewater | Lower-tier | Municipality | ||||||
| Bonfield | Single-tier | Township | ||||||
| Bonnechere Valley | Lower-tier | Township | Renfrew | |||||
| Bracebridge | Lower-tier | Town | ||||||
| Bradford West Gwillimbury | Lower-tier | Town | ||||||
| Brampton | Lower-tier | City | ||||||
| Brant | Single-tier | City | ||||||
| Brantford | Single-tier | City | ||||||
| Brethour | Single-tier | Township | ||||||
| Brighton | Lower-tier | Municipality | ||||||
| Brock | Lower-tier | Township | ||||||
| Brockton | Lower-tier | Municipality | ||||||
| Brockville | Single-tier | City | ||||||
| Brooke-Alvinston | Lower-tier | Municipality | Lambton | |||||
| Bruce Mines | Single-tier | Town | ||||||
| Brudenell, Lyndoch and Raglan | Lower-tier | Township | Renfrew | |||||
| Burk's Falls | Single-tier | Village | ||||||
| Burlington | Lower-tier | City | ||||||
| Burpee and Mills | Single-tier | Township | ||||||
| Caledon | Lower-tier | Town | ||||||
| Callander | Single-tier | Municipality | ||||||
| Calvin | Single-tier | Municipality | ||||||
| Cambridge | Lower-tier | City | ||||||
| Carleton Place | Lower-tier | Town | Lanark | |||||
| Carling | Single-tier | Township | ||||||
| Carlow/Mayo | Lower-tier | Township | ||||||
| Casey | Single-tier | Township | ||||||
| Casselman | Lower-tier | Village | ||||||
| Cavan Monaghan | Lower-tier | Township | ||||||
| Central Elgin | Lower-tier | Municipality | ||||||
| Central Frontenac | Lower-tier | Township | ||||||
| Central Huron | Lower-tier | Municipality | ||||||
| Central Manitoulin | Single-tier | Municipality | ||||||
| Centre Hastings | Lower-tier | Municipality | ||||||
| Centre Wellington | Lower-tier | Township | Wellington | |||||
| Chamberlain | Single-tier | Township | ||||||
| Champlain | Lower-tier | Township | ||||||
| Chapleau | Single-tier | Township | ||||||
| Chapple | Single-tier | Township | ||||||
| Charlton and Dack | Single-tier | Municipality | ||||||
| Chatham-Kent | Single-tier | Municipality | ||||||
| Chatsworth | Lower-tier | Township | ||||||
| Chisholm | Single-tier | Township | ||||||
| Clarence-Rockland | Lower-tier | City | ||||||
| Clarington | Lower-tier | Municipality | ||||||
| Clearview | Lower-tier | Township | ||||||
| Cobalt | Single-tier | Town | ||||||
| Cobourg | Lower-tier | Town | ||||||
| Cochrane | Single-tier | Town | ||||||
| Cockburn Island | Single-tier | Township | ||||||
| Coleman | Single-tier | Township | ||||||
| Collingwood | Lower-tier | Town | ||||||
| Conmee | Single-tier | Township | ||||||
| Cornwall | Single-tier | City | ||||||
| Cramahe | Lower-tier | Township | ||||||
| Dawn-Euphemia | Lower-tier | Township | Lambton | |||||
| Dawson | Single-tier | Township | ||||||
| Deep River | Lower-tier | Town | Renfrew | |||||
| Deseronto | Lower-tier | Town | ||||||
| Dorion | Single-tier | Township | ||||||
| Douro-Dummer | Lower-tier | Township | ||||||
| Drummond/North Elmsley | Lower-tier | Township | Lanark | |||||
| Dryden | Single-tier | City | ||||||
| Dubreuilville | Single-tier | Township | ||||||
| Dutton/Dunwich | Lower-tier | Municipality | ||||||
| Dysart et al | Lower-tier | Municipality | Haliburton | |||||
| Ear Falls | Single-tier | Township | ||||||
| East Ferris | Single-tier | Municipality | ||||||
| East Garafraxa | Lower-tier | Township | ||||||
| East Gwillimbury | Lower-tier | Town | ||||||
| East Hawkesbury | Lower-tier | Township | ||||||
| East Zorra-Tavistock | Lower-tier | Township | ||||||
| Edwardsburgh/Cardinal | Lower-tier | Township | ||||||
| Elizabethtown-Kitley | Lower-tier | Township | ||||||
| Elliot Lake | Single-tier | City | ||||||
| Emo | Single-tier | Township | ||||||
| Englehart | Single-tier | Town | ||||||
| Enniskillen | Lower-tier | Township | Lambton | |||||
| Erin | Lower-tier | Town | Wellington | |||||
| Espanola | Single-tier | Town | ||||||
| Essa | Lower-tier | Township | ||||||
| Essex | Lower-tier | Town | Essex | |||||
| Evanturel | Single-tier | Township | ||||||
| Faraday | Lower-tier | Township | ||||||
| Fauquier-Strickland | Single-tier | Township | ||||||
| Fort Erie | Lower-tier | Town | ||||||
| Fort Frances | Single-tier | Town | ||||||
| French River | Single-tier | Municipality | ||||||
| Front of Yonge | Lower-tier | Township | ||||||
| Frontenac Islands | Lower-tier | Township | ||||||
| Gananoque | Single-tier | Town | ||||||
| Gauthier | Single-tier | Township | ||||||
| Georgian Bay | Lower-tier | Township | ||||||
| Georgian Bluffs | Lower-tier | Township | ||||||
| Georgina | Lower-tier | Town | ||||||
| Gillies | Single-tier | Township | ||||||
| Goderich | Lower-tier | Town | ||||||
| Gordon/Barrie Island | Single-tier | Municipality | ||||||
| Gore Bay | Single-tier | Town | ||||||
| Grand Valley | Lower-tier | Town | ||||||
| Gravenhurst | Lower-tier | Town | ||||||
| Greater Madawaska | Lower-tier | Township | Renfrew | |||||
| Greater Napanee | Lower-tier | Town | Lennox and Addington | |||||
| Greater Sudbury | Single-tier | City | ||||||
| Greenstone | Single-tier | Municipality | ||||||
| Grey Highlands | Lower-tier | Municipality | ||||||
| Grimsby | Lower-tier | Town | ||||||
| Guelph | Single-tier | City | ||||||
| Guelph/Eramosa | Lower-tier | Township | ||||||
| Haldimand | Single-tier | City | ||||||
| Halton Hills | Lower-tier | Town | ||||||
| Hamilton | Lower-tier | Township | ||||||
| Hamilton | Single-tier | City | ||||||
| Hanover | Lower-tier | Town | ||||||
| Harley | Single-tier | Township | ||||||
| Harris | Single-tier | Township | ||||||
| Hastings Highlands | Lower-tier | Municipality | ||||||
| Havelock-Belmont-Methuen | Lower-tier | Township | ||||||
| Hawkesbury | Lower-tier | Town | ||||||
| Head, Clara and Maria | Lower-tier | Township | Renfrew | |||||
| Hearst | Single-tier | Town | ||||||
| Highlands East | Lower-tier | Municipality | ||||||
| Hilliard | Single-tier | Township | ||||||
| Hilton | Single-tier | Township | ||||||
| Hilton Beach | Single-tier | Village | ||||||
| Hornepayne | Single-tier | Township | ||||||
| Horton | Lower-tier | Township | Renfrew | |||||
| Howick | Lower-tier | Township | ||||||
| Hudson | Single-tier | Township | ||||||
| Huntsville | Lower-tier | Town | ||||||
| Huron East | Lower-tier | Municipality | ||||||
| Huron Shores | Single-tier | Municipality | ||||||
| Huron-Kinloss | Lower-tier | Township | ||||||
| Ignace | Single-tier | Township | ||||||
| Ingersoll | Lower-tier | Town | ||||||
| Innisfil | Lower-tier | Town | ||||||
| Iroquois Falls | Single-tier | Town | ||||||
| James | Single-tier | Township | ||||||
| Jocelyn | Single-tier | Township | ||||||
| Johnson | Single-tier | Township | ||||||
| Joly | Single-tier | Township | ||||||
| Kapuskasing | Single-tier | Town | ||||||
| Kawartha Lakes | Single-tier | City | ||||||
| Kearney | Single-tier | Town | ||||||
| Kenora | Single-tier | City | ||||||
| Kerns | Single-tier | Township | ||||||
| Killaloe, Hagarty and Richards | Lower-tier | Township | Renfrew | |||||
| Killarney | Single-tier | Municipality | ||||||
| Kincardine | Lower-tier | Municipality | ||||||
| King | Lower-tier | Township | ||||||
| Kingston | Single-tier | City | ||||||
| Kingsville | Lower-tier | Town | Essex | |||||
| Kirkland Lake | Single-tier | Town | ||||||
| Kitchener | Lower-tier | City | ||||||
| La Vallee | Single-tier | Township | ||||||
| Laird | Single-tier | Township | ||||||
| Lake of Bays | Lower-tier | Township | ||||||
| Lake of the Woods | Single-tier | Township | ||||||
| Lakeshore | Lower-tier | Town | Essex | |||||
| Lambton Shores | Lower-tier | Municipality | Lambton | |||||
| Lanark Highlands | Lower-tier | Township | Lanark | |||||
| Larder Lake | Single-tier | Township | ||||||
| LaSalle | Lower-tier | Town | Essex | |||||
| Latchford | Single-tier | Town | ||||||
| Laurentian Hills | Lower-tier | Town | Renfrew | |||||
| Laurentian Valley | Lower-tier | Township | Renfrew | |||||
| Leamington | Lower-tier | Municipality | Essex | |||||
| Leeds and the Thousand Islands | Lower-tier | Township | ||||||
| Limerick | Lower-tier | Township | ||||||
| Lincoln | Lower-tier | Town | ||||||
| London | Single-tier | City | ||||||
| Loyalist | Lower-tier | Township | Lennox and Addington | |||||
| Lucan Biddulph | Lower-tier | Township | ||||||
| Macdonald, Meredith and Aberdeen Additional | Single-tier | Township | ||||||
| Machar | Single-tier | Township | ||||||
| Machin | Single-tier | Municipality | ||||||
| Madawaska Valley | Lower-tier | Township | Renfrew | |||||
| Madoc | Lower-tier | Township | ||||||
| Magnetawan | Single-tier | Municipality | ||||||
| Malahide | Lower-tier | Township | ||||||
| Manitouwadge | Single-tier | Township | ||||||
| Mapleton | Lower-tier | Township | Wellington | |||||
| Marathon | Single-tier | Town | ||||||
| Markham | Lower-tier | City | ||||||
| Markstay-Warren | Single-tier | Municipality | ||||||
| Marmora and Lake | Lower-tier | Municipality | ||||||
| Matachewan | Single-tier | Township | ||||||
| Mattawa | Single-tier | Town | ||||||
| Mattawan | Single-tier | Township | ||||||
| Mattice-Val Côté | Single-tier | Township | ||||||
| McDougall | Single-tier | Municipality | ||||||
| McGarry | Single-tier | Township | ||||||
| McKellar | Single-tier | Township | ||||||
| McMurrich/Monteith | Single-tier | Township | ||||||
| McNab/Braeside | Lower-tier | Township | Renfrew | |||||
| Meaford | Lower-tier | Municipality | ||||||
| Melancthon | Lower-tier | Township | ||||||
| Merrickville–Wolford | Lower-tier | Village | ||||||
| Middlesex Centre | Lower-tier | Municipality | ||||||
| Midland | Lower-tier | Town | ||||||
| Milton | Lower-tier | Town | ||||||
| Minden Hills | Lower-tier | Township | ||||||
| Minto | Lower-tier | Town | Wellington | |||||
| Mississauga | Lower-tier | City | ||||||
| Mississippi Mills | Lower-tier | Town | Lanark | |||||
| Mono | Lower-tier | Town | ||||||
| Montague | Lower-tier | Township | Lanark | |||||
| Moonbeam | Single-tier | Township | ||||||
| Moosonee | Single-tier | Town | ||||||
| Morley | Single-tier | Township | ||||||
| Morris-Turnberry | Lower-tier | Municipality | ||||||
| Mulmur | Lower-tier | Township | ||||||
| Muskoka Lakes | Lower-tier | Township | ||||||
| Nairn and Hyman | Single-tier | Township | ||||||
| The Nation | Lower-tier | Municipality | ||||||
| Neebing | Single-tier | Municipality | ||||||
| New Tecumseth | Lower-tier | Town | ||||||
| Newbury | Lower-tier | Village | ||||||
| Newmarket | Lower-tier | Town | ||||||
| Niagara Falls | Lower-tier | City | ||||||
| Niagara-on-the-Lake | Lower-tier | Town | ||||||
| Nipigon | Single-tier | Township | ||||||
| Nipissing | Single-tier | Township | ||||||
| Norfolk | Single-tier | City | ||||||
| North Algona Wilberforce | Lower-tier | Township | Renfrew | |||||
| North Bay | Single-tier | City | ||||||
| North Dumfries | Lower-tier | Township | ||||||
| North Dundas | Lower-tier | Township | ||||||
| North Frontenac | Lower-tier | Township | ||||||
| North Glengarry | Lower-tier | Township | ||||||
| North Grenville | Lower-tier | Municipality | ||||||
| North Huron | Lower-tier | Township | ||||||
| North Kawartha | Lower-tier | Township | ||||||
| North Middlesex | Lower-tier | Municipality | ||||||
| North Perth | Lower-tier | Municipality | Perth | |||||
| The North Shore | Single-tier | Township | ||||||
| North Stormont | Lower-tier | Township | ||||||
| Northeastern Manitoulin and the Islands | Single-tier | Municipality | ||||||
| Northern Bruce Peninsula | Lower-tier | Municipality | ||||||
| Norwich | Lower-tier | Township | ||||||
| Oakville | Lower-tier | Town | ||||||
| O'Connor | Single-tier | Township | ||||||
| Oil Springs | Lower-tier | Village | Lambton | |||||
| Oliver Paipoonge | Single-tier | Municipality | ||||||
| Opasatika | Single-tier | Township | ||||||
| Orangeville | Lower-tier | Town | ||||||
| Orillia | Single-tier | City | ||||||
| Oro-Medonte | Lower-tier | Township | ||||||
| Oshawa | Lower-tier | City | ||||||
| Otonabee–South Monaghan | Lower-tier | Township | ||||||
| Ottawa | Single-tier | City | ||||||
| Owen Sound | Lower-tier | City | ||||||
| Papineau-Cameron | Single-tier | Township | ||||||
| Parry Sound | Single-tier | Town | ||||||
| Pelee | Single-tier | Township | Essex | |||||
| Pelham | Lower-tier | Town | ||||||
| Pembroke | Single-tier | City | Renfrew | |||||
| Penetanguishene | Lower-tier | Town | ||||||
| Perry | Single-tier | Township | ||||||
| Perth | Lower-tier | Town | Lanark | |||||
| Perth East | Lower-tier | Township | Perth | |||||
| Perth South | Lower-tier | Township | Perth | |||||
| Petawawa | Lower-tier | Town | Renfrew | |||||
| Peterborough | Single-tier | City | ||||||
| Petrolia | Lower-tier | Town | Lambton | |||||
| Pickering | Lower-tier | City | ||||||
| Pickle Lake | Single-tier | Township | ||||||
| Plummer Additional | Single-tier | Township | ||||||
| Plympton–Wyoming | Lower-tier | Town | Lambton | |||||
| Point Edward | Lower-tier | Village | Lambton | |||||
| Port Colborne | Lower-tier | City | ||||||
| Port Hope | Lower-tier | Municipality | ||||||
| Powassan | Single-tier | Municipality | ||||||
| Prescott | Single-tier | Town | ||||||
| Prince | Single-tier | Township | ||||||
| Prince Edward | Single-tier | City | ||||||
| Puslinch | Lower-tier | Township | Wellington | |||||
| Quinte West | Single-tier | City | ||||||
| Rainy River | Single-tier | Town | ||||||
| Ramara | Lower-tier | Township | ||||||
| Red Lake | Single-tier | Municipality | ||||||
| Red Rock | Single-tier | Township | ||||||
| Renfrew | Lower-tier | Town | Renfrew | |||||
| Richmond Hill | Lower-tier | City | ||||||
| Rideau Lakes | Lower-tier | Township | ||||||
| Russell | Lower-tier | Township | ||||||
| Ryerson | Single-tier | Township | ||||||
| Sables-Spanish Rivers | Single-tier | Township | ||||||
| Sarnia | Lower-tier | City | Lambton | |||||
| Saugeen Shores | Lower-tier | Town | ||||||
| Sault Ste. Marie | Single-tier | City | ||||||
| Schreiber | Single-tier | Township | ||||||
| Scugog | Lower-tier | Township | ||||||
| Seguin | Single-tier | Township | ||||||
| Selwyn | Lower-tier | Township | ||||||
| Severn | Lower-tier | Township | ||||||
| Shelburne | Lower-tier | Town | ||||||
| Shuniah | Single-tier | Municipality | ||||||
| Sioux Lookout | Single-tier | Municipality | ||||||
| Sioux Narrows-Nestor Falls | Single-tier | Township | ||||||
| Smiths Falls | Single-tier | Town | Lanark | |||||
| Smooth Rock Falls | Single-tier | Town | ||||||
| South Algonquin | Single-tier | Township | ||||||
| South Bruce | Lower-tier | Municipality | ||||||
| South Bruce Peninsula | Lower-tier | Town | ||||||
| South Dundas | Lower-tier | Municipality | ||||||
| South Frontenac | Lower-tier | Township | ||||||
| South Glengarry | Lower-tier | Township | ||||||
| South Huron | Lower-tier | Municipality | ||||||
| South River | Single-tier | Village | ||||||
| South Stormont | Lower-tier | Township | ||||||
| Southgate | Lower-tier | Township | ||||||
| Southwest Middlesex | Lower-tier | Municipality | ||||||
| South-West Oxford | Lower-tier | Township | ||||||
| Southwold | Lower-tier | Township | ||||||
| Spanish | Single-tier | Town | ||||||
| Springwater | Lower-tier | Township | ||||||
| St. Catharines | Lower-tier | City | ||||||
| St. Clair | Lower-tier | Township | Lambton | |||||
| St. Joseph | Single-tier | Township | ||||||
| St. Marys | Single-tier | Town | Perth | |||||
| St. Thomas | Single-tier | City | ||||||
| St.-Charles | Single-tier | Municipality | ||||||
| Stirling-Rawdon | Lower-tier | Township | ||||||
| Stone Mills | Lower-tier | Township | Lennox and Addington | |||||
| Stratford | Single-tier | City | Perth | |||||
| Strathroy-Caradoc | Lower-tier | Municipality | ||||||
| Strong | Single-tier | Township | ||||||
| Sundridge | Single-tier | Village | ||||||
| Tarbutt | Single-tier | Township | ||||||
| Tay | Lower-tier | Township | ||||||
| Tay Valley | Lower-tier | Township | Lanark | |||||
| Tecumseh | Lower-tier | Town | Essex | |||||
| Tehkummah | Single-tier | Township | ||||||
| Temagami | Single-tier | Municipality | ||||||
| Temiskaming Shores | Single-tier | City | ||||||
| Terrace Bay | Single-tier | Township | ||||||
| Thames Centre | Lower-tier | Municipality | ||||||
| Thessalon | Single-tier | Town | ||||||
| Thornloe | Single-tier | Village | ||||||
| Thorold | Lower-tier | City | ||||||
| Thunder Bay | Single-tier | City | ||||||
| Tillsonburg | Lower-tier | Town | ||||||
| Timmins | Single-tier | City | ||||||
| Tiny | Lower-tier | Township | ||||||
| Toronto | Single-tier[15] | City | ||||||
| Trent Hills | Lower-tier | Municipality | ||||||
| Trent Lakes | Lower-tier | Municipality | ||||||
| Tudor and Cashel | Lower-tier | Township | ||||||
| Tweed | Lower-tier | Municipality | ||||||
| Tyendinaga | Lower-tier | Township | ||||||
| Uxbridge | Lower-tier | Township | ||||||
| Val Rita-Harty | Single-tier | Township | ||||||
| Vaughan | Lower-tier | City | ||||||
| Wainfleet | Lower-tier | Township | ||||||
| Warwick | Lower-tier | Township | Lambton | |||||
| Wasaga Beach | Lower-tier | Town | ||||||
| Waterloo | Lower-tier | City | ||||||
| Wawa | Single-tier | Municipality | ||||||
| Welland | Lower-tier | City | ||||||
| Wellesley | Lower-tier | Township | ||||||
| Wellington North | Lower-tier | Township | Wellington | |||||
| West Elgin | Lower-tier | Municipality | ||||||
| West Grey | Lower-tier | Municipality | ||||||
| West Lincoln | Lower-tier | Township | ||||||
| West Nipissing | Single-tier | Municipality | ||||||
| West Perth | Lower-tier | Municipality | Perth | |||||
| Westport | Lower-tier | Village | ||||||
| Whitby | Lower-tier | Town | ||||||
| Whitchurch-Stouffville | Lower-tier | Town | ||||||
| White River | Single-tier | Township | ||||||
| Whitestone | Single-tier | Municipality | ||||||
| Whitewater | Lower-tier | Township | Renfrew | |||||
| Wilmot | Lower-tier | Township | ||||||
| Windsor | Single-tier | City | Essex | |||||
| Wollaston | Lower-tier | Township | ||||||
| Woodstock | Lower-tier | City | ||||||
| Woolwich | Lower-tier | Township | ||||||
| Zorra | Lower-tier | Township | ||||||
| Total local municipalities | ||||||||
| Total single-tier local municipalities | ||||||||
| Total lower-tier local municipalities | ||||||||
| Total cities | ||||||||
| Total single-tier cities | ||||||||
| Total lower-tier cities | ||||||||
| Total municipalities | ||||||||
| Total single-tier municipalities | ||||||||
| Total lower-tier municipalities | ||||||||
| Total towns | ||||||||
| Total single-tier towns | ||||||||
| Total lower-tier towns | ||||||||
| Total townships | ||||||||
| Total single-tier townships | ||||||||
| Total lower-tier townships | ||||||||
| Total villages | ||||||||
| Total single-tier villages | ||||||||
| Total lower-tier villages | ||||||||
| Province of Ontario | ||||||||