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Cities in Ontario - Best Places to Visit
There are 155 cities in Ontario.
Toronto
is the most popular city with a population of 2,794,356.
Most Popular
By Name
By Population
1
Toronto
Largest city in Canada with diverse population
Pop. 2,794,356
2
Niagara Falls, Ontario
City in Ontario, famous for its waterfalls
Pop. 99,818
3
Ottawa
Capital city of Canada
Pop. 1,017,449
4
Hamilton, Ontario
Industrial city in Ontario with diverse economy
Pop. 569,353
5
London, Ontario
City in Ontario, Canada, near Lake Erie
Pop. 422,324
6
Mississauga
City in Ontario known for its multiculturalism
Pop. 717,961
7
Windsor, Ontario
City in Ontario known for its waterfront
Pop. 229,660
8
Kingston, Ontario
City on the St. Lawrence River with historic sites
Pop. 132,485
9
Brampton
City in Ontario, part of Greater Toronto
Pop. 656,480
10
Kitchener, Ontario
Ontario city known for technology and innovation
Pop. 256,885
11
Thunder Bay
City in Ontario, Canada, near Lake Superior
Pop. 108,843
12
Oshawa
Canadian city located in Ontario province
Pop. 175,383
13
Greater Sudbury
City in Ontario, Canada
Pop. 166,004
14
Barrie
Ontario city on Lake Simcoe, Toronto commuter town
Pop. 147,829
15
Guelph
City in Ontario known for its university
Pop. 143,740
16
St. Catharines
City in Ontario, known for its wine region
Pop. 136,803
17
Brantford
City in Ontario, Canada
Pop. 104,688
18
Markham, Ontario
City in Ontario, Canada
Pop. 338,503
19
Sault Ste. Marie, Ontario
City in Ontario located near the Great Lakes
Pop. 72,051
20
Vaughan
City in Ontario, known for Vaughan Mills mall
Pop. 323,103
21
Burlington, Ontario
City in Ontario, Canada, near Lake Ontario
Pop. 186,948
22
Sarnia
City in Ontario with a rich industrial history
Pop. 72,125
23
Belleville, Ontario
City in Ontario with vibrant community
Pop. 50,716
24
Waterloo, Ontario
City in Ontario, Canada
Pop. 104,986
25
Cornwall, Ontario
City in Ontario, known for its rivers
Pop. 48,821
26
Peterborough, Ontario
City in Ontario known for its lakes
Pop. 85,807
27
Cambridge, Ontario
City in Ontario, known for its technology
Pop. 129,920
28
Brockville
City in Ontario, Canada
Pop. 23,886
29
Timmins
City in Canada with a mining history
Pop. 41,788
30
Stratford, Ontario
City in Ontario, known for its festivals.
Pop. 31,465
31
North Bay, Ontario
City in Ontario, Canada
Pop. 50,396
32
Pickering, Ontario
City in Canada located near Lake Ontario
Pop. 91,771
33
Richmond Hill, Ontario
Growing suburban city in Ontario, Canada
Pop. 202,022
34
Ajax, Ontario
City in Canada, part of the Greater Toronto Area
Pop. 119,677
35
Whitby, Ontario
City in Ontario, known for its suburban life
Pop. 138,501
36
Niagara-on-the-Lake
Historic town in Ontario, Canada near Niagara Falls
Pop. 17,511
37
Newmarket, Ontario
City in Ontario, Canada
Pop. 91,034
38
Welland
City in Ontario with a vibrant community
Pop. 52,293
39
Orillia
City in Ontario known for its lakeside parks
Pop. 31,166
40
Pembroke, Ontario
City in Canada near Ottawa River
Pop. 13,882
41
Aurora, Ontario
City in Ontario, Canada with suburban developments
Pop. 55,445
42
St. Thomas, Ontario
City in Ontario, Canada, near Lake Erie
Pop. 38,909
43
Kenora
City in Ontario located on Lake of the Woods
Pop. 15,096
44
Owen Sound
City in Ontario, Canada, on Georgian Bay
Pop. 21,341
45
Greater Napanee
City in Ontario near Lake Ontario
Pop. 15,892
46
Milton, Ontario
City in Ontario, Canada
Pop. 132,979
47
Caledon, Ontario
City in Ontario, Canada
Pop. 76,581
48
Cobourg
Ontario city on Lake Ontario's shoreline
Pop. 18,099
49
Norfolk County, Ontario
City in Ontario, Canada
Pop. 60,847
50
Quinte West
City in Ontario, Canada near Bay of Quinte
Pop. 43,577
51
Woodstock, Ontario
City in Ontario known for its parks
Pop. 40,404
52
Prince Edward County, Ontario
City in Ontario, Canada.
Pop. 25,496
53
Midland, Ontario
Town in Ontario, Canada with local amenities
Pop. 24,353
54
Port Colborne
City in Ontario, near Lake Erie
Pop. 18,306
55
Perth, Ontario
City in Ontario, Canada
Pop. 5,573
56
Gananoque
City in Ontario, Canada by the St. Lawrence
Pop. 5,458
57
Orangeville, Ontario
City in Ontario, Canada
Pop. 30,734
58
Fort Erie, Ontario
City in Ontario, Canada
Pop. 30,710
59
Dryden, Ontario
City in Ontario, Canada with natural beauty
Pop. 8,195
60
Cochrane, Ontario
City in Ontario, Canada
Pop. 5,390
61
Moosonee
Town on the Moose River near James Bay, Ontario
Pop. 1,405
62
Collingwood, Ontario
Ontario city on Georgian Bay
Pop. 21,793
63
Clarence-Rockland
Ontario city near Ottawa and Montreal
Pop. 20,790
64
Elliot Lake
City in Ontario, Canada
Pop. 12,508
65
Gravenhurst, Ontario
City in Ontario, Canada
Pop. 12,312
66
Temiskaming Shores
City in Ontario, Canada near Lake Temiskaming
Pop. 10,442
67
Grimsby, Ontario
City in Ontario, Canada
Pop. 27,314
68
Thorold
City in Ontario with historical significance
Pop. 18,801
69
Orleans, Ontario
Suburb of Ottawa in Ontario, Canada
Pop. 125,937
70
Nepean, Ontario
City in Ontario, Canada
Pop. 180,000
71
Gloucester, Ontario
City in Ontario, part of Ottawa region
Pop. 150,012
72
Oakville (provincial electoral district)
Ontario city located near Lake Ontario
Pop. 213,759
73
Ottawa South (federal electoral district)
City in Canada, part of Ottawa region
Pop. 125,090
74
Etobicoke
City in Ontario, known for urban development
Pop. 365,000
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