The City of Waterloo, Ontario, recorded a population of 121,436 in the 2021 Census, compared to 104,986 in 2016. This reflects a 15.7% increase (+16,450 residents), highlighting Waterloo’s strong growth as a tech and university hub. With a land area of 64.06 km², Waterloo has a population density of 1,895.8 people per km². Known as one of Canada’s premier innovation centres, Waterloo combines youthful demographics with high levels of education and diverse housing.
Population Growth Trends
| Year | Population | Change | % Change |
|---|---|---|---|
| 2016 | 104,986 | – | – |
| 2021 | 121,436 | +16,450 | +15.7% |
Age Distribution
Waterloo has a median age of 36.0 years, making it younger than the Ontario average. Its demographics are strongly influenced by its two universities (University of Waterloo and Wilfrid Laurier University), reflected in the large 20–24 age cohort (14,110 people, 11.6%).
| Age Group | Population | Percent |
|---|---|---|
| 0–14 years | 17,640 | 14.5% |
| 15–64 years | 85,080 | 70.1% |
| 65+ years | 18,705 | 15.4% |
Households & Dwellings
Waterloo reported 52,049 private dwellings, of which 47,040 were occupied in 2021. The average household size is 2.5 persons, slightly below the provincial average, reflecting the large student and single-resident population.
Household size
| Household Size | Households | Share |
|---|---|---|
| 1 person | 12,250 | 26.0% |
| 2 persons | 15,710 | 33.4% |
| 3 persons | 7,560 | 16.1% |
| 4 persons | 7,505 | 15.9% |
| 5+ persons | 4,020 | 8.6% |
Dwelling type
| Dwelling Type | Count |
|---|---|
| Single-detached house | 23,145 |
| Semi-detached house | 2,125 |
| Row house | 5,375 |
| Apartment <5 storeys | 4,945 |
| Apartment ≥5 storeys | 10,330 |
| Duplex | 1,015 |
| Other / movable dwelling | 115 |
Demographics (Race / Ethnicity)
Waterloo is one of Ontario’s most diverse cities, driven by international students, immigrants, and tech-sector professionals. While exact visible minority counts aren’t provided here, the 2021 Census shows over 30% of residents identify as a visible minority, with South Asian, Chinese, and Black communities forming the largest groups.
| Visible Minority Group | Percent (est.) |
|---|---|
| South Asian | ~12% |
| Chinese | ~7% |
| Black | ~4% |
| Arab & West Asian | ~3% |
| Other visible minorities | ~5% |
| White (non-minority) | ~70% |
Immigration
Waterloo attracts a significant immigrant population, both through its universities and high-tech job market. Of its immigrant population admitted between 1980 and 2021, the majority entered as economic immigrants (60.3%), with family sponsorship and refugees making up the remainder.
Immigrant status
| Status | Population | Percent |
|---|---|---|
| Canadian citizens | 97,955 | 82.7% |
| Not Canadian citizens | 20,435 | 17.3% |
Admission category (1980–2021)
| Category | Number | Percent |
|---|---|---|
| Economic immigrants | 16,480 | 60.3% |
| — Principal applicants | 6,490 | 23.7% |
| — Secondary applicants | 9,995 | 36.6% |
| Family-sponsored | 5,720 | 20.9% |
| Refugees | 4,895 | 17.9% |
| Other immigrants | 245 | 0.9% |
Income & Poverty
Waterloo residents reported strong incomes in 2020, although pandemic-related government transfers (received by 26,585 individuals) affected averages.
- Median household income (2020): $94,000
- Median economic family income (2020): $120,000
- Median income for one-person households (2020): $46,000
- Median income for couple-with-children families (2020): $155,000
Low income (LIM-AT, 2020)
| Age Group | In Low Income | Percent |
|---|---|---|
| 0–17 years | 2,245 | 10.3% |
| 18–64 years | 9,610 | 12.1% |
| 65+ years | 1,520 | 9.0% |
| Total | 13,375 | 11.3% |
Education
Waterloo is one of Canada’s most highly educated cities. Nearly 65% of adults hold a postsecondary credential, with a large share holding university degrees, reflecting the presence of two major universities.
| Highest Education Level (15+) | Population |
|---|---|
| No certificate/diploma/degree | 10,335 |
| High school diploma | 25,335 |
| Postsecondary (any) | 65,150 |
| — Apprenticeship/trades | 3,185 |
| — College diploma | 16,125 |
| — University degree+ | 43,915 |
Employment
Waterloo’s labour force participation rate was 65.4% in 2021, with an employment rate of 57.6% and an unemployment rate of 12.0%, influenced by the COVID-19 pandemic.
Occupation groups
| Occupation Group | Workers |
|---|---|
| Sales & service | 14,280 |
| Business & finance | 11,205 |
| Natural & applied sciences | 11,260 |
| Education, law & government | 9,680 |
| Health occupations | 3,560 |
Top industries
| Industry Sector | Workers |
|---|---|
| Professional, scientific & technical services | 8,940 |
| Educational services | 8,770 |
| Manufacturing | 6,825 |
| Retail trade | 6,510 |
| Health care & social assistance | 5,670 |
Commuting & Transportation
Waterloo is a mid-sized city with strong public transit links, including the ION light rail system, but private vehicles remain the dominant commuting method.
| Mode of Transport | Percent (est.) |
|---|---|
| Car (driver/passenger) | ~70% |
| Public transit | ~20% |
| Walking & cycling | ~8% |
| Other | ~2% |
Conclusion
In 2021, Waterloo’s population reached 121,436, up 15.7% since 2016, making it one of Ontario’s fastest-growing cities. With a median age of just 36 years, high levels of education, strong immigrant presence, and thriving industries in tech and education, Waterloo stands out as a young, innovative city with global appeal.
FAQ
Waterloo’s population was 121,436 in 2021.
Waterloo’s population is growing, up 15.7% since 2016.
The median age is 36.0 years, reflecting its young student population.
There were 47,040 occupied private dwellings in Waterloo in 2021.
Key industries include technology, education, manufacturing, health care, and retail trade.
Source:
- Statistics Canada, 2021 Census of Population.
- Statistics Canada. Table 17-10-0148-01 Population estimates, July 1, by census metropolitan area and census agglomeration, 2021 boundaries
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