List of Ontario provincial electoral districts
{{Short description|none}}
{{Use Canadian English|date=March 2025}}
{{Use dmy dates|date=March 2025}}
The Ontario provincial electoral districts each elect one representative to the Legislative Assembly of Ontario.{{cite canlaw|short title=Legislative Assembly Act|abbr=R.S.O.|year=1990|chapter=L10 |link=https://www.ontario.ca/laws/statute/90l10 |accessdate=2018-06-07}} They are MPPs, Members of Provincial Parliament. Before 2025, these districts were coterminous with the federal electoral districts, based on the 2013 Representation Order as defined by Elections Canada. The exception was Northern Ontario, whose districts were not equivalent to their federal complements, since the provincial government did not want to decrease the number of districts in Northern Ontario. Despite Ontario's federal ridings changing substantially in the 2022 Canadian federal electoral redistribution, the provincial ridings remained unchanged, leading to Ontario's provincial and federal ridings once again being separate as of the 2025 provincial and federal elections.
Current electoral districts
The following 124 electoral districts are currently represented in the Legislative Assembly of Ontario. The average riding population was 108,482 as of 2016.
| class="wikitable sortable" |
| Electoral district
!Created !First contested !Population !MPP |
|---|
| Ajax
|2015 |2018 |119,677 |
| Algoma—Manitoulin
|1934 |1934 |68,480 |
| Aurora—Oak Ridges—Richmond Hill
| 2015 | 2018 | 115,225 |
| Barrie—Innisfil
|2015 |2018 |109,285 |
| Barrie—Springwater—Oro-Medonte
|2015 |2018 |100,785 |
| Bay of Quinte
|2015 |2018 |109,735 |
| Beaches—East York
|1996 |1999 |109,465 |
| Brampton Centre
|2015 |2018 |102,275 |
| Brampton East
|2015 |2018 |122,000 |
| Brampton North
|2015 |2018 |118,180 |
| Brampton South
|2015 |2018 |121,188 |
| Brampton West
|2004 |2007 |130,005 |
| Brantford—Brant
|1999 |1999 |130,300 |
| Bruce—Grey—Owen Sound
|1999 |1999 |107,675 |
| Burlington
|1999 |1999 |123,185 |
| Cambridge
|1975 |1979 |115,460 |
| Carleton
|2015 |2018 |102,918 |
| Chatham-Kent—Leamington
|1999 |1999 |109,620 |
| Davenport
|1996 |1999 |108,475 |
| Don Valley East
|1999 |1999 |94,575 |
| Don Valley North
|2015 |2018 |110,080 |
| Don Valley West
|1999 |1999 |102,510 |
| Dufferin—Caledon
|1987 |1988 |128,240 |
| Durham
|1999 |1999 |130,870 |
| Eglinton—Lawrence
|1999 |1999 |114,400 |
| Elgin—Middlesex—London
|1999 |1999 |115,055 |
| Essex
|1999 |1999 |125,440 |
| Etobicoke Centre
|1999 |1999 |118,020 |
| Etobicoke—Lakeshore
|1987 |1988 |129,080 |
| Etobicoke North
|1999 |1999 |118,045 |
| Flamborough—Glanbrook
| 2015 | 2018 | 111,070 |
| Glengarry—Prescott—Russell
|1999 |1999 | 109,980 |
| Guelph
|2004 |2007 | 131,790 |
| Haldimand—Norfolk
|1999 |1999 | 109,655 |
| [[Haliburton—Kawartha Lakes—Brock (provincial electoral district)|Haliburton—Kawartha Lakes—
Brock]] |1999 |1999 | 113,960 |
| Hamilton Centre
|1926 |1926 | 100,100 |
| Hamilton East—Stoney Creek
|2006 |2007 | 107,845 |
| Hamilton Mountain
|1976 |1977 | 104,875 |
| Hamilton West—Ancaster—Dundas
|2015 |2018 | 113,025 |
| Hastings—Lennox and Addington
|2015 |2018 |94,333 |
| Humber River—Black Creek
|1999 |1999 | 108,035 |
| Huron—Bruce
|1952 |1953 | 106,570 |
| Kanata—Carleton
|2015 |2018 |110,960 |
| Kenora—Rainy River
|1999 |1999 | 53,027 |
| Kingston and the Islands
|1966 |1967 |117,545 |
| King—Vaughan
| 2015 | 2018 | 131,995 |
| Kitchener Centre
|1999 |1999 | 105,260 |
| Kitchener—Conestoga
|2006 |2007 | 100,705 |
| Kitchener South—Hespeler
|2015 |2018 | 105,305 |
| Kiiwetinoong
|2017 |2018 |32,987 |
| Lambton—Kent—Middlesex
|1999 |1999 | 105,335 |
| Lanark—Frontenac—Kingston
|2015 |2018 | 101,635 |
| Leeds—Grenville—Thousand Islands and Rideau Lakes
|1986 |1987 | 100,545 |
| London—Fanshawe
|1999 |1999 |119,467 |
| London North Centre
|1999 |1999 |125,360 |
| London West
|1999 |1999 |126,110 |
| Markham—Stouffville
|2015 |2018 | 126,060 |
| Markham—Thornhill
|2015 |2018 | 99,075 |
| Markham—Unionville
|2003 |2007 | 123,320 |
| Milton
|2015 |2018 | 114,090 |
| Mississauga Centre
|1996 |1999 | 124,845 |
| Mississauga East—Cooksville
|2003 |2007 | 120,205 |
| Mississauga—Erin Mills
|2015 |2018 |120,205 |
| Mississauga—Lakeshore
|2015 |2018 |117,444 |
| Mississauga—Malton
|2015 |2018 |118,240 |
| Mississauga—Streetsville
|2003 |2007 | 118,305 |
| Mushkegowuk—James Bay
|2017 |2018 |30,037 |
| Nepean
|1987 |2018 | 119,115 |
| Newmarket—Aurora
|2006 |2007 | 117,415 |
| Niagara Centre
|1914 |1914 | 109,070 |
| Niagara Falls
|1914 |1914 | 136,290 |
| Niagara West
|2004 |2007 | 90,840 |
| Nickel Belt
|1952 |1955 |84,520 |
| Nipissing
|1890 |1890 | 75,060 |
| Northumberland—Peterborough South
|2006 |2007 |112,412 |
| Oakville
|1999 |1999 | 120,920 |
| Oakville North—Burlington
|2015 |2018 |129,078 |
| Orléans
|1999 |1999 | 128,280 |
| Oshawa
|1952 |1955 |126,765 |
| Ottawa Centre
|1966 |1968 | 118,040 |
| Ottawa South
|1925 |1926 | 121,055 |
| Ottawa—Vanier
|1908 |1908 | 111,510 |
| Ottawa West—Nepean
|1999 |1999 | 111,835 |
| Oxford
|1999 |1999 | 113,790 |
| Parkdale—High Park
|1996 |1999 | 108,805 |
| Parry Sound—Muskoka
|1999 |1999 |94,400 |
| Perth—Wellington
|2006 |2007 | 107,905 |
| Peterborough—Kawartha
|1934 |1934 | 118,175 |
| Pickering—Uxbridge
|2015 |2018 | 112,945 |
| Renfrew—Nipissing—Pembroke
|1999 |1999 | 103,495 |
| Richmond Hill
|2003 |2007 | 110,180 |
| St. Catharines
|1966 |1967 | 111,690 |
| Sarnia—Lambton
|1999 |1999 | 105,335 |
| Sault Ste. Marie
|1890 |1890 | 73,370 |
| Scarborough—Agincourt
|1987 |1987 | 105,540 |
| Scarborough Centre
|1963 |1963 | 112,600 |
| Scarborough—Guildwood
|2006 |2007 | 102,390 |
| Scarborough North
|1963 |1963 | 98,805 |
| Scarborough—Rouge Park
|2015 |2018 |102,275 |
| Scarborough Southwest
|1999 |1999 | 110,280 |
| Simcoe—Grey
|1999 |1999 | 129,940 |
| Simcoe North
|1999 |1999 | 111,335 |
| Spadina—Fort York
| 2015 | 2018 | 115,510 |
| Stormont—Dundas—South Glengarry
|2004 |2007 |103,320 |
| Sudbury
|1905 |1908 |80,840 |
| Thornhill
|1999 |1999 | 112,720 |
| Thunder Bay—Atikokan
|1999 |1999 |75,920 |
| Thunder Bay—Superior North
|1999 |1999 |70,475 |
| Timiskaming—Cochrane
|1999 |1999 |67,290 |
| Timmins
|1999 |1999 |41,788 |
| Toronto Centre
|1999 |1999 | 103,805 |
| Toronto—Danforth
|1999 |1999 | 106,880 |
| Toronto—St. Paul's
|1999 |1999 | 107,900 |
| University—Rosedale
|2015 |2018 | 104,315 |
| Vaughan—Woodbridge
|2015 |2018 |105,228 |
| Waterloo
|2015 |2018 |110,134 |
| Wellington—Halton Hills
|2004 |2007 |120,981 |
| Whitby
|2015 |2018 |128,377 |
| Willowdale
|1987 |1987 | 118,805 |
| Windsor—Tecumseh
|1996 |1999 |117,430 |
| Windsor West
|1996 |1999 |122,219 |
| York Centre
|1999 |1999 | 104,320 |
| York South—Weston
|1999 |1999 |114,458 |
| York—Simcoe
|2006 |2007 | 104,015 |
;Note
- Population information from 2016 Census{{cite web |url=https://www12.statcan.gc.ca/census-recensement/2016/dp-pd/prof/index.cfm?Lang=E |publisher=Statistics Canada |accessdate=December 22, 2018 |title=Census Profile, 2016 Census }} or Elections Ontario.{{cite web |url=https://voterinformationservice.elections.on.ca/en/election/search?mode=electoralDistrict |title=Elections Ontario: Voter Information Service |accessdate=December 22, 2018}}
- Election results from Elections Ontario.{{cite web|url=https://www.elections.on.ca/content/dam/NGW/sitecontent/2018/results/officialresults-yellowbook/votescastbycandidate/pdf/Valid%20Votes%20Cast%20for%20Each%20Candidate%20-%202018%20Provincial%20General%20Election.pdf|title=Summary of Valid Votes Cast for each Candidate|publisher=Elections Ontario|accessdate=16 January 2019|archive-url=https://web.archive.org/web/20181228175029/https://www.elections.on.ca/content/dam/NGW/sitecontent/2018/results/officialresults-yellowbook/votescastbycandidate/pdf/Valid%20Votes%20Cast%20for%20Each%20Candidate%20-%202018%20Provincial%20General%20Election.pdf|archive-date=28 December 2018|url-status=dead}}
Defunct electoral districts
=Toronto=
{{columns-list|
- Armourdale
- Beaches
- Beaches—Woodbine
- Bellwoods
- Bracondale
- Brockton
- Don Mills
- Dovercourt
- Downsview
- Eglinton
- Etobicoke
- Etobicoke—Humber
- Etobicoke—Rexdale
- Etobicoke West
- Forest Hill
- Fort York
- Greenwood
- High Park
- High Park—Swansea
- Humber
- Lakeshore
- Oakwood
- Oriole
- Parkdale
- Riverdale
- Scarborough East
- Scarborough—Ellesmere
- Scarborough North
- Scarborough West
- St. Andrew
- St. Andrew—St. Patrick
- St. David
- St. George
- St. George—St. David
- St. Patrick
- Toronto
- Toronto Northeast
- Toronto Northwest
- Toronto Southeast
- Toronto Southwest
- Wilson Heights
- Woodbine
- York East
- York Mills
- York South
- York-Forest Hill
- York—Scarborough
- Yorkview
- York—Humber
}}
=GTA=
{{columns-list|
- Bramalea—Gore—Malton—Springdale
- Brampton Centre
- Brampton North
- Brampton South
- Brampton West—Mississauga
- Durham Centre
- Durham East
- Durham North
- Durham West
- Durham—York
- Markham
- Mississauga Centre
- Mississauga East
- Mississauga North
- Mississauga West
- Pickering—Ajax—Uxbridge
- Vaughan—King—Aurora
- Whitby—Ajax
- York North
}}
=Rest of province=
{{columns-list|
- Algoma
- Ancaster
- Barrie—Simcoe—Bradford
- Brant North
- Bruce
- Burlington South
- Carleton East
- Carleton—Grenville
- Chatham—Kent
- Cochrane North
- Cochrane South
- Cornwall
- Dufferin—Peel—Wellington—Grey
- Erie
- Erie—Lincoln
- Frontenac-Addington
- Guelph—Wellington
- Haldimand—Norfolk—Brant
- Halton
- Halton Centre
- Halton East
- Halton North
- Halton West
- Halton—Burlington
- Hamilton East
- Hamilton West
- Hamilton—Wentworth
- Hastings—Frontenac—Lennox and Addington
- Huron
- Huron Centre
- Huron East
- Huron North
- Huron West
- Kenora
- Kent—Elgin
- Kitchener—Wilmot
- Lake Nipigon
- Lanark
- Lanark—Carlton
- Lawrence
- Lincoln
- London Centre
- London North
- London South
- Manitoulin
- Muskoka
- Muskoka–Georgian Bay
- Niagara
- Niagara Centre
- Niagara South
- Nipissing East
- Nipissing West
- Oakville South
- Ottawa–Rideau
- Ottawa North
- Ottawa West
- Oxford North
- Oxford South
- Perth
- Prescott and Russell
- Quinte
- Renfrew North
- Renfrew South
- Simcoe Centre
- Simcoe West
- St. Catharines—Brock
- Sturgeon Falls
- Sudbury East
- Timiskaming
- Thunder Bay
- Victoria-Haliburton
- Waterloo North
- Waterloo South
- Welland South
- Welland—Thorold
- Wellington East
- Wellington—Dufferin—Peel
- Wellington South
- Wellington West
- Wentworth North
- Windsor
- Windsor East
- Windsor—Sandwich
}}