Based on the 2021 census, Ajax has a population of 126,666 people, and is one of the fastest growing municipalities in Ontario.
For more statistics, visit Ajax Data Portal on on the Durham Workforce Authority website. The data is available for download.
Statistics Canada Census Profile, 2021 Census of Population |
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Characteristic |
Ajax, Town (T) |
Ontario |
[Census Subdivision] |
Counts |
Total |
Men + |
Women + |
Population and Dwellings |
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Population, 2021 |
126,666 |
… |
… |
Population, 2016 |
119,677 |
… |
… |
Population percentage change, 2016 to 2021 |
5.8 |
… |
… |
Total private dwellings |
40,275 |
… |
… |
Private dwellings occupied by usual residents |
39,488 |
… |
… |
Population density per square kilometre |
1,900.6 |
… |
… |
Land area in square kilometres |
66.64 |
… |
… |
Age characteristics |
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Total - Age groups of the population - 100% data |
126,665 |
61,645 |
65,020 |
0 to 14 years |
23,805 |
12,265 |
11,535 |
0 to 4 years |
7,185 |
3,705 |
3,480 |
5 to 9 years |
8,050 |
4,110 |
3,940 |
10 to 14 years |
8,565 |
4,455 |
4,115 |
15 to 64 years |
86,275 |
41,905 |
44,370 |
15 to 19 years |
8,305 |
4,315 |
3,990 |
20 to 24 years |
8,180 |
4,170 |
4,010 |
25 to 29 years |
8,240 |
4,145 |
4,090 |
30 to 34 years |
8,565 |
4,055 |
4,510 |
35 to 39 years |
9,235 |
4,380 |
4,850 |
40 to 44 years |
8,990 |
4,165 |
4,825 |
45 to 49 years |
8,660 |
4,115 |
4,550 |
50 to 54 years |
8,700 |
4,140 |
4,560 |
55 to 59 years |
9,355 |
4,505 |
4,845 |
60 to 64 years |
8,050 |
3,915 |
4,135 |
65 years and over |
16,585 |
7,480 |
9,105 |
65 to 69 years |
5,675 |
2,720 |
2,955 |
70 to 74 years |
4,490 |
2,085 |
2,405 |
75 to 79 years |
2,890 |
1,335 |
1,550 |
80 to 84 years |
1,785 |
720 |
1,070 |
85 years and over |
1,745 |
615 |
1,130 |
85 to 89 years |
1,120 |
420 |
695 |
90 to 94 years |
495 |
170 |
335 |
95 to 99 years |
110 |
20 |
90 |
100 years and over |
15 |
5 |
10 |
Total - Distribution (%) of the population by broad age groups - 100% data |
100.0 |
100.0 |
100.0 |
0 to 14 years |
18.8 |
19.9 |
17.7 |
15 to 64 years |
68.1 |
68.0 |
68.2 |
65 years and over |
13.1 |
12.1 |
14.0 |
85 years and over |
1.4 |
1.0 |
1.7 |
Average age of the population |
38.6 |
37.6 |
39.5 |
Median age of the population |
38.4 |
37.2 |
39.6 |
Household and dwelling characteristics |
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Total - Occupied private dwellings by structural type of dwelling - 100% data |
39,485 |
… |
… |
Single-detached house |
25,560 |
… |
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Semi-detached house |
2,265 |
… |
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Row house |
6,020 |
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Apartment or flat in a duplex |
1,385 |
… |
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Apartment in a building that has fewer than five storeys |
1,610 |
… |
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Apartment in a building that has five or more storeys |
2,635 |
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Other single-attached house |
10 |
… |
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Movable dwelling |
5 |
… |
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Total - Private households by household size - 100% data |
39,490 |
… |
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1 person |
5,555 |
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2 persons |
9,810 |
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3 persons |
7,925 |
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… |
4 persons |
8,980 |
… |
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5 or more persons |
7,220 |
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… |
Number of persons in private households |
126,245 |
61,510 |
64,740 |
Average household size |
3.2 |
… |
… |
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Symbol legend |
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… not applicable |
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Source: Statistics Canada, 2021 Census of Population |
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