Ajax: population and official figures
In depth
- Economy, jobs and prices in Ajax: The median total income of households in Ajax was C$119,000 in 2020, as reported in the 2021 Census, 5th highest of 69 Canadian cities and metropolitan areas on this site; the median for Canada was C$84,000.
- Education in Ajax: 36.1% of people aged 25 to 64 in Ajax held a bachelor's degree or higher in 2021, 28th highest of 69 Canadian cities and metropolitan areas on this site, above the national 32.9%.
- Poverty and living standards in Ajax: 5.5% of people in private households in Ajax, 6,915 in all, were in low income in 2020 by the low-income measure after tax (LIM-AT), 2nd lowest of 69 Canadian cities and metropolitan areas on this site; the rate for Canada was 11.1%.
What is the population of Ajax?
Statistics Canada estimates that Ajax (the municipality) had 141,111 residents on 1 July 2025, 19th smallest of 69 Canadian cities and metropolitan areas on this site; that was 1.6% more than a year earlier (138,900) and 6.8% more than on 1 July 2021 (132,184).
Source: Statistics Canada · saved copyHow fast is Ajax growing?
Between 1 July 2021 and 1 July 2025 the population of Ajax changed by +6.8%, 17th slowest growth of 69 Canadian cities and metropolitan areas on this site; Canada as a whole grew 8.9%, to 41,651,653, and Ajax held 0.34% of that total.
Source: Statistics Canada · saved copyHow many people lived in Ajax at the 2021 Census?
The 2021 Census counted 126,666 people in Ajax, +5.8% on the 119,677 counted in 2016 (29th slowest growth of 69 Canadian cities and metropolitan areas on this site; Canada: +5.2%). It covers 67 square kilometres, or 1,901 people per square kilometre.
Source: Statistics Canada · saved copyWhat is the median age in Ajax?
The median age in Ajax was 38.4 years at the 2021 Census, joint 11th youngest of 69 Canadian cities and metropolitan areas on this site (Canada: 41.6); 13.1% of residents were 65 or older and 18.8% were under 15 (Canada: 19.0% and 16.3%).
Source: Statistics Canada · saved copyWho runs Ajax?
In Canada, cities and towns are run by regional or upper-tier municipalities: Mostly councillors sent from lower-tier councils; some heads elected directly. Regional planning, transit, water and policing in some areas.
How local power works in Canada
Cities of a similar size in Canada
- Kelowna 167,654
- Cambridge 165,354
- Langley 163,885
- Whitby 162,413
- Lévis V 160,882
- Guelph 160,760
- Milton 157,345
- St. Catharines 153,865
- Saguenay 151,972
- Trois-Rivières 149,934
- Kingston 149,527
- Waterloo 142,450
- St. John's 128,693
- Terrebonne 126,872
- Saanich 126,011
- Delta 124,670
Up a level: all cities in Canada · Canada · government and power
Sources
- Statistics Canada: Census Profile, 2021 Census of Population (98-316-X2021001): census subdivisions, selected characteristics (Census Profile SDMX API extract, dataflow DF_CSD, gender total, counts and rates), read 23 October 2026 · saved copy (SHA-256 46d086943a5e…)
- Statistics Canada: Table 17-10-0155-01: Population estimates, July 1, by census subdivision, 2021 boundaries (Web Data Service extract, 2021-2025; request saved as popest-17100155-csd.request.json), read 23 October 2026 · saved copy (SHA-256 95b5a4929299…)
- Statistics Canada: Table 14-10-0459-01: Labour force characteristics by census metropolitan area, three-month moving average, seasonally adjusted (Web Data Service extract: unemployment and employment rates, latest 13 months; request saved as lfs-14100459-cma.request.json, geography names in lfs-14100459-metadata.json), read 23 October 2026 · saved copy (SHA-256 5f4399c9fdfa…)
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