Most Dense in Ontario

Top 100 cities ranked by most dense

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All Countries · Canada · Ontario

Most Dense — Ontario

1 Toronto 11,468/mi²

2 Brampton 6,395/mi²

3 Mississauga 6,352/mi²

4 Newmarket 5,916/mi²

5 Richmond Hill 5,191/mi²

6 Orangeville 5,153/mi²

7 Etobicoke 5,131/mi²

8 Ajax 4,923/mi²

9 Waterloo 4,910/mi²

10 Kitchener 4,863/mi²

11 Guelph 4,258/mi²

12 Markham 4,156/mi²

13 Windsor 4,074/mi²

14 Oakville 3,985/mi²

15 Barrie 3,867/mi²

16 St. Catharines 3,683/mi²

17 Shelburne 3,550/mi²

18 Peterborough 3,346/mi²

19 Carleton Place 3,262/mi²

20 Aurora 3,214/mi²

21 Cambridge 3,174/mi²

22 Aylmer 3,130/mi²

23 Oshawa 3,117/mi²

24 St. Thomas 3,116/mi²

25 Vaughan 3,072/mi²

26 Orillia 3,033/mi²

27 Stratford 2,867/mi²

28 Ingersoll 2,785/mi²

29 Brantford 2,749/mi²

30 Brockville 2,740/mi²

31 Hawkesbury 2,615/mi²

32 Burlington 2,601/mi²

33 London 2,601/mi²

34 Pembroke 2,597/mi²

35 Smiths Falls 2,482/mi²

36 Whitby 2,445/mi²

37 Goderich 2,391/mi²

38 Cobourg 2,372/mi²

39 Thorncliffe Park 2,353/mi²

40 Owen Sound 2,312/mi²

41 Tillsonburg 2,172/mi²

42 Woodstock 2,142/mi²

43 Hanover 2,110/mi²

44 O'Connor-Parkview 2,082/mi²

45 Cornwall 2,015/mi²

46 Gananoque 1,990/mi²

47 Collingwood 1,938/mi²

48 Danforth East York 1,915/mi²

49 Arnprior 1,913/mi²

50 Leaside-Bennington 1,876/mi²

51 Welland 1,779/mi²

52 Taylor-Massey 1,748/mi²

53 Nepean 1,714/mi²

54 Chatham 1,699/mi²

55 Renfrew 1,656/mi²

56 St. Marys 1,538/mi²

57 Perth 1,372/mi²

58 Parry Sound 1,360/mi²

59 Midland 1,306/mi²

60 LaSalle 1,305/mi²

61 Broadview North 1,282/mi²

62 Rockcliffe-Smythe 1,266/mi²

63 Petrolia 1,250/mi²

64 Oakwood Village 1,207/mi²

65 Niagara Falls 1,163/mi²

66 Wasaga Beach 1,122/mi²

67 Pickering 1,112/mi²

68 Grimsby 1,089/mi²

69 Old East York 1,029/mi²

70 Penetanguishene 1,027/mi²

71 Weston 1,024/mi²

72 Willowdale 1,008/mi²

73 Milton 947/mi²

74 Ottawa 945/mi²

75 Woodbine-Lumsden 877/mi²

76 King 860/mi²

77 Thunder Bay 860/mi²

78 Sault Ste. Marie 841/mi²

79 Humewood-Cedarvale 818/mi²

80 Briar Hill-Belgravia 811/mi²

81 Mount Dennis 774/mi²

82 Kingston 760/mi²

83 Fort Frances 757/mi²

84 Thorold 741/mi²

85 Willowdale East 640/mi²

86 Tecumseh 638/mi²

87 Keelesdale-Eglinton West 629/mi²

88 Whitchurch-Stouffville 626/mi²

89 Islington-City Centre West 618/mi²

90 Halton Hills 589/mi²

91 Belleville 577/mi²

92 Caledonia-Fairbank 567/mi²

93 Woburn 562/mi²

94 Bradford West Gwillimbury 554/mi²

95 Fort Erie 513/mi²

96 Rouge 489/mi²

97 Mimico 477/mi²

98 West Humber-Clairville 468/mi²

99 Mount Olive-Silverstone-Jamestown 463/mi²

100 L'Amoreaux 462/mi²

The most densely populated cities in Ontario pack the most residents per square mile, creating vibrant urban environments with walkable neighborhoods and extensive public transit. Toronto leads with 11,468 people per square mile.

High population density is often associated with better access to public transportation, more walkable streets, and a wider variety of restaurants, shops, and entertainment options within close proximity. These cities tend to have lower car ownership rates and shorter commute distances.

Dense cities face unique challenges including higher housing costs, limited parking, and potential overcrowding in public spaces. However, they also tend to have lower per-capita carbon footprints due to shared infrastructure and reduced driving.

Did You Know?

1. Toronto has 11,468 people per square mile — that's roughly 18 people per acre.
2. Dense cities tend to have the most walkable neighborhoods and lowest car ownership rates in the country.
3. Urban density can reduce per-capita carbon emissions by up to 50% compared to suburban sprawl.

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