Ontario Cities by Population 2025

5 Most Populated Ontario Cities

Toronto

2,417,722

Ottawa

798,731

Mississauga

698,994

Hamilton

490,747

Brampton

418,379

147 cities

City	2025 Pop. ↓	2024 Pop.	2016 Pop.	2011 Pop.	Change
Toronto	2,417,722	2,438,892	2,615,060	2,731,570	-0.87%
Ottawa	798,731	807,722	883,391	934,243	-1.11%
Mississauga	698,994	700,585	713,443	721,599	-0.23%
Hamilton	490,747	493,908	519,949	536,917	-0.64%
Brampton	418,379	428,967	523,906	593,638	-2.47%
London	336,368	339,554	366,151	383,822	-0.94%
Vaughan	258,628	261,768	288,301	306,233	-1.2%
Markham	258,211	262,717	301,709	328,966	-1.71%
Windsor	200,013	201,193	210,891	217,188	-0.59%
Kitchener	195,933	198,386	219,153	233,222	-1.24%
Richmond Hill	169,622	171,321	185,541	195,022	-0.99%
Oakville	163,796	165,778	182,520	193,832	-1.2%
Burlington	162,988	164,362	175,779	183,314	-0.84%
Greater Sudbury	158,036	158,283	160,274	161,531	-0.16%
Oshawa	133,383	135,095	149,607	159,458	-1.27%
St. Catharines	128,372	128,705	131,400	133,113	-0.26%
Barrie	126,904	127,890	136,063	141,434	-0.77%
Kingston	122,584	122,670	123,363	123,798	-0.07%
Cambridge	121,232	121,833	126,748	129,920	-0.49%
Whitby	111,365	112,502	122,022	128,377	-1.01%
Thunder Bay	109,174	109,083	108,359	107,909	0.08%
Chatham-Kent	107,416	106,994	103,671	101,647	0.4%
Guelph	105,410	107,105	121,688	131,794	-1.58%
Ajax	93,551	95,212	109,600	119,677	-1.74%
Waterloo	88,519	89,604	98,780	104,986	-1.21%
Brantford	87,105	87,809	93,650	97,496	-0.8%
Pickering	83,484	84,050	88,721	91,771	-0.67%
Sault Ste. Marie	78,441	78,067	75,141	73,368	0.48%
Peterborough	74,875	75,299	78,777	81,032	-0.56%
Niagara Falls	74,589	75,480	82,997	88,071	-1.18%
Sarnia	73,777	73,619	72,366	71,594	0.21%
Newmarket	72,867	73,625	79,978	84,224	-1.03%
Clarington	72,604	73,843	84,548	92,013	-1.68%
Kawartha Lakes	69,413	69,826	73,219	75,423	-0.59%
Norfolk County	61,640	61,809	63,175	64,044	-0.27%
North Bay	57,645	57,187	53,651	51,553	0.8%
Halton Hills	55,335	55,732	59,013	61,161	-0.71%
Milton	52,215	55,074	84,362	110,128	-5.19%
Aurora	49,393	49,803	53,203	55,445	-0.82%
Caledon	48,610	49,711	59,460	66,502	-2.21%
Welland	47,771	48,081	50,631	52,293	-0.64%
Belleville	47,261	47,500	49,454	50,716	-0.5%
Cornwall	45,895	45,944	46,340	46,589	-0.11%
Timmins	45,759	45,463	43,165	41,788	0.65%
Haldimand County	43,588	43,729	44,876	45,608	-0.32%
Quinte West	42,216	42,312	43,086	43,577	-0.23%
Georgina	40,293	40,640	43,517	45,418	-0.85%
St. Thomas	36,163	36,352	37,905	38,909	-0.52%
Brant	33,792	33,992	35,638	36,707	-0.59%
Woodstock	32,686	33,213	37,754	40,902	-1.59%
Lakeshore	31,118	31,482	34,546	36,611	-1.15%
Stratford	29,917	30,025	30,903	31,465	-0.36%
Leamington	29,917	29,745	28,403	27,595	0.58%
Orillia	29,569	29,680	30,586	31,166	-0.38%
Fort Erie	28,656	28,798	29,960	30,710	-0.49%
Innisfil	26,804	27,405	32,727	36,566	-2.19%
Orangeville	26,384	26,556	27,975	28,900	-0.65%
Whitchurch-Stouffville	26,378	27,440	37,628	45,837	-3.87%
Prince Edward County	26,227	26,118	25,258	24,735	0.42%
LaSalle	26,071	26,345	28,643	30,180	-1.04%
Tecumseh	24,312	24,233	23,610	23,229	0.33%
Centre Wellington	24,194	24,460	26,693	28,191	-1.09%
New Tecumseth	24,165	24,774	30,234	34,242	-2.46%
Brockville	22,846	22,735	21,870	21,346	0.49%
Owen Sound	22,327	22,255	21,688	21,341	0.32%
Grimsby	22,103	22,439	25,325	27,314	-1.5%
Scugog	21,483	21,492	21,569	21,617	-0.04%
Strathroy-Caradoc	21,179	21,157	20,978	20,867	0.11%
Kingsville	21,024	21,061	21,362	21,552	-0.18%
Clarence-Rockland	20,975	21,210	23,185	24,512	-1.11%
Amherstburg	20,889	20,962	21,556	21,936	-0.35%
Lincoln	20,323	20,553	22,487	23,787	-1.12%
Woolwich	20,137	20,451	23,145	25,006	-1.53%
East Gwillimbury	19,979	20,241	22,473	23,991	-1.3%
Uxbridge	19,664	19,768	20,623	21,176	-0.53%
Port Colborne	18,638	18,614	18,424	18,306	0.13%
Bradford West Gwillimbury	18,571	19,444	28,077	35,325	-4.49%
Oro-Medonte	18,462	18,635	20,078	21,036	-0.93%
Essex	18,195	18,346	19,600	20,427	-0.82%
Huntsville	17,761	17,900	19,056	19,816	-0.78%
South Frontenac	17,192	17,292	18,113	18,646	-0.58%
Wilmot	17,054	17,282	19,223	20,545	-1.32%
Cobourg	16,970	17,135	18,519	19,440	-0.97%
Springwater	16,810	16,961	18,223	19,059	-0.89%
Selwyn	16,468	16,509	16,846	17,060	-0.25%
Thorold	16,465	16,622	17,931	18,801	-0.94%
Midland	16,059	16,115	16,572	16,864	-0.35%
Kenora	15,812	15,760	15,348	15,096	0.33%
Pelham	15,715	15,810	16,598	17,110	-0.61%
Collingwood	15,377	15,765	19,241	21,793	-2.46%
St. Clair	15,320	15,229	14,515	14,086	0.6%
Port Hope	15,287	15,387	16,214	16,753	-0.65%
Pembroke	15,262	15,159	14,360	13,882	0.68%
Middlesex Centre	15,179	15,319	16,487	17,262	-0.91%
Loyalist	14,954	15,089	16,221	16,971	-0.9%
Greater Napanee	14,848	14,920	15,511	15,892	-0.48%
Essa	14,633	15,020	18,505	21,083	-2.57%
Bracebridge	14,397	14,506	15,414	16,010	-0.76%
Tillsonburg	14,324	14,430	15,301	15,872	-0.73%
Petawawa	14,037	14,241	15,988	17,187	-1.44%
West Nipissing	13,770	13,812	14,149	14,364	-0.3%
King	13,672	14,255	19,899	24,512	-4.08%
Russell	13,198	13,411	15,247	16,520	-1.59%
South Glengarry	13,184	13,181	13,162	13,150	0.02%
Wasaga Beach	13,040	13,476	17,537	20,675	-3.24%
Clearview	13,014	13,092	13,734	14,151	-0.6%
Central Elgin	12,992	12,964	12,743	12,607	0.21%
North Grenville	12,906	13,131	15,085	16,451	-1.72%
West Lincoln	12,719	12,839	13,837	14,500	-0.93%
Thames Centre	12,663	12,700	13,000	13,191	-0.29%
Elliot Lake	12,528	12,391	11,348	10,741	1.11%
Niagara-on-the-Lake	12,221	12,539	15,400	17,511	-2.54%
Trent Hills	12,088	12,144	12,604	12,900	-0.46%
West Grey	11,879	11,924	12,286	12,518	-0.37%
North Perth	11,780	11,872	12,631	13,130	-0.77%
South Stormont	11,776	11,866	12,617	13,110	-0.76%
Gravenhurst	11,608	11,656	12,055	12,311	-0.42%
Perth East	11,574	11,622	12,011	12,261	-0.41%
Guelph/Eramosa	11,570	11,658	12,380	12,854	-0.75%
Hanover	11,407	11,672	14,026	15,733	-2.27%
Meaford	11,299	11,277	11,100	10,991	0.2%
North Dundas	11,130	11,141	11,225	11,278	-0.09%
Ingersoll	11,119	11,229	12,146	12,757	-0.98%
Mississippi Mills	11,099	11,235	12,385	13,163	-1.21%
Hawkesbury	11,090	11,029	10,551	10,263	0.56%
Saugeen Shores	10,964	11,140	12,661	13,715	-1.59%
Brock	10,819	10,876	11,341	11,642	-0.52%
Kincardine	10,797	10,838	11,174	11,389	-0.38%
Wellington North	10,730	10,811	11,477	11,914	-0.74%
South Dundas	10,724	10,732	10,794	10,833	-0.07%
Lambton Shores	10,701	10,696	10,656	10,631	0.05%
Severn	10,618	10,801	12,377	13,477	-1.69%
North Glengarry	10,512	10,482	10,251	10,109	0.28%
Tiny	10,298	10,398	11,232	11,787	-0.96%
Georgian Bluffs	10,270	10,285	10,404	10,479	-0.14%
Norwich	10,235	10,288	10,721	11,001	-0.51%
Rideau Lakes	9,996	10,019	10,207	10,326	-0.23%
Adjala-Tosorontio	9,965	10,034	10,603	10,975	-0.69%
The Nation	9,866	10,051	11,668	12,808	-1.85%
Wellesley	9,794	9,893	10,713	11,260	-0.99%
South Huron	9,679	9,708	9,945	10,096	-0.3%
Erin	9,663	9,780	10,770	11,439	-1.2%
Brighton	9,454	9,607	10,928	11,844	-1.6%
Tay	9,223	9,279	9,736	10,033	-0.6%
Mapleton	9,089	9,185	9,989	10,527	-1.04%
Carleton Place	8,468	8,607	9,809	10,644	-1.62%
North Dumfries	7,935	8,080	9,334	10,215	-1.79%

Ontario Cities Overview

The largest city in Ontario is Toronto, with a 2025 population of 2,417,722. Elliot Lake is the fastest growing city in Ontario, having grown 1.11% annually between 2011 and 2016.