Sarnia, Ontario Population & Demographics: How Many People Live Here?

Data source: Statistics Canada, 2021 Census of Population — View the official Sarnia census dataset on Statistics Canada

This article shows the demographic data and statistics of Sarnia. It is a city in Canada that encompasses a land area of 163.90 km2. The city has a population density of 439.60 people per km2.

We highlight the Sarnia city's various population characteristics. From gender, age distribution, ethnicity, household and dwelling, and income to spoken languages, occupation, and religion.

Sarnia on the Map

The map and listings below are sourced from OpenStreetMap contributors, not Statistics Canada, and may be incomplete depending on how thoroughly the area has been mapped.

Sarnia location on the map. View in Google Map

Population Characteristics

According to the latest census, Sarnia has a population of around 72,047 people. The city's population is in increased . Between 2016 and 2021, the population of Sarnia has increased by 0.63%.

Population in 2016Population in 2021Difference
71,59472,047 +0.63%

2026 Population Projection

Based on the compound annual growth rate (CAGR) of 0.13% observed between the 2016 and 2021 censuses, Sarnia's population is projected to reach approximately 72,503 people by 2026, with a projected population density of around 442.36 people per km².

Population in 2021Projected Population in 2026Projected Density in 2026 (per km²)
72,04772,503442.36

This projection is an estimate calculated by CAPopulation from the compound annual growth rate between the 2016 and 2021 censuses. Official 2026 complete census data expected to be released in late 2027.

Population By Genders

The male population of Sarnia is around 35,105 while the female population is around 36,945.

Of the 72,047 total population in Sarnia, the largest gender is female with around 36,945 women within the population.

MaleFemaleDifference
35,10536,945 +4.98%

Is Sarnia a Good Place to Live?

Based on 2021 Statistics Canada Census data, here's how Sarnia compares across key quality-of-life indicators — measured against Ontario, its own province. Draw your own conclusions from the actual numbers.

Employment & Economy

13.0%
Unemployment rate
0.8 pts above the province
47.6%
Employment rate
7.5 pts below the province
54.7%
Participation rate
8.1 pts below the province

Income & Affordability

$77,500
Median household income
$13,500 below the province
11.2%
Below low-income threshold (LIM-AT)
1.1 pts above the province

Commute

88.6%
Commute under 30 minutes
26.6 pts above the province
91.5%
Commute by car
7.9 pts above the province
2.1%
Commute by public transit
6.5 pts below the province

Housing Character

67.4%
Single-detached houses
13.8 pts above the province
22.8%
Apartments (any building size)
8.4 pts below the province

Household Composition

2.20 people
Average household size
0.40people below the province
33.5%
One-person households
7.0 pts above the province

Source: Statistics Canada, 2021 Census of Population.

Other Cities Near Sarnia

Population by Age Characteristics

Sarnia has an aging population. The majority of the population is people aged 60 to 64 years old, accounting for 8.00% of the total population. The city median age is 46.00.

DataMaleFemaleDifferenceTotal
60 to 64 years2,745 7.80%3,025 8.20% 9.26%5,770 8.00%
65 to 69 years2,535 7.20%2,840 7.70% 10.74%5,375 7.50%
55 to 59 years2,435 6.90%2,705 7.30% 9.98%5,145 7.10%
25 to 29 years2,455 7.00%2,160 5.80% 12.02%4,610 6.40%
70 to 74 years2,170 6.20%2,360 6.40% 8.05%4,530 6.30%
30 to 34 years2,295 6.50%2,190 5.90% 4.58%4,490 6.20%
35 to 39 years2,115 6.00%2,135 5.80% 0.94%4,250 5.90%
50 to 54 years2,050 5.80%2,100 5.70% 2.38%4,150 5.80%
20 to 24 years2,025 5.80%1,915 5.20% 5.43%3,945 5.50%
45 to 49 years1,940 5.50%2,010 5.40% 3.48%3,945 5.50%
40 to 44 years1,920 5.50%2,005 5.40% 4.24%3,925 5.40%
10 to 14 years1,845 5.30%1,910 5.20% 3.40%3,750 5.20%
15 to 19 years1,825 5.20%1,740 4.70% 4.66%3,565 4.90%
5 to 9 years1,735 4.90%1,775 4.80% 2.25%3,515 4.90%
0 to 4 years1,695 4.80%1,610 4.40% 5.01%3,310 4.60%
75 to 79 years1,505 4.30%1,770 4.80% 14.97%3,280 4.60%
85 years and over880 2.50%1,485 4.00% 40.74%2,360 3.30%
80 to 84 years930 2.60%1,210 3.30% 23.14%2,135 3.00%
85 to 89 years585 1.70%900 2.40% 35.00%1,490 2.10%
90 to 94 years245 0.70%440 1.20% 44.32%680 0.90%
95 to 99 years55 0.20%130 0.40% 57.69%185 0.30%

Broader Age Groups

If the city's population is divided into broader age groups, most of the population falls into the 15 to 64 years age group. The group accounts for 60.80% of the population. The other age groups, 65 years and over and 0 to 14 years, account for 24.50% and 14.70%, respectively.

If we look at the population data from the broader age groups, we can see that most people in Sarnia are within the 15 to 64 years age group.

DataMaleFemaleTotal
Median age of the population44.00%47.60%46.00%
Average age of the population43.60%45.80%44.80%
65 years and over22.80%26.20%24.50%
0 to 14 years15.00%14.30%14.70%

Photos of Places & Sceneries in Sarnia

Explore Sarnia Through Videos

Population of Sarnia by Ethnicity and Origin

The population of Sarnia is quite diverse, which contributes to the city's vibrant cultural landscape. Sarnia is inclusive and accepts various ethnic groups with open arms. Furthermore, the province appreciates the unique contributions that each ethnicity brings.

The top 5 ethnicities and origins in the province are English, which accounts for 28.64% of the total population, followed by Scottish (21.75%), Irish (21.46%), Canadian (16.78%), and French (11.98%).

Other ethnicities and origins in Newfoundland and Labrador include German, Dutch, Italian, British Isles, and Polish.

Ethnicity and OriginMaleFemalePercentage in Population
English27.52%29.71%28.64%
Scottish21.90%21.61%21.75%
Irish19.82%23.02%21.46%
Canadian17.01%16.57%16.78%
French11.35%12.59%11.98%
German9.44%9.12%9.28%
Dutch7.77%8.12%7.95%
Italian5.64%4.94%5.28%
British Isles4.01%4.18%4.09%
Polish2.98%3.20%3.09%

Immigration Profile

Immigration patterns vary a great deal from one area to another, which makes this data one of the more distinctive parts of Sarnia's population profile.

About 12.1% of Sarnia's population are immigrants (8,570 people).

The top countries of origin for Sarnia's immigrant population are United Kingdom (1,990), United States of America (860), Italy (550), India (545), Netherlands (500).

Only using 25% sample data.
Country of BirthPopulation
United Kingdom1,990
United States of America860
Italy550
India545
Netherlands500

Household and Dwelling Characteristics

About 21,685 of Sarnia's population live in a single-detached house. In addition, most of them are living in 2 persons household.

Household Size

About 18.30% of the population lives in 2 persons households. 1 person households ranked second, accounting for 16.75% of the population. 3 persons, 4 persons, and 5 or more persons households account for 6.75%, 5.45%, and 2.75%, respectively.

Number of Person(s) in HouseholdTotalPercentage
2 persons11,79018.30%
1 person10,79016.75%
3 persons4,3356.75%
4 persons3,4955.45%
5 or more persons1,7802.75%

Income in Sarnia

Analyzing income distribution in Sarnia can help us better understand its socioeconomic dynamics.

Per Capita Income

According to 2020 data, the median personal income within Sarnia is $40,800.

A region's per capita data sheds light on the average income earned per person living in it. Since per capita income is calculated by dividing the region's total income by its population, it quantifies the population's economic situation on an individual basis.

Such data offers insights into the city's economic performance, spread of income across individuals, quality of life, as well as disparities within its borders.

Most of Sarnia population or around 8,410 people falls in the $10,000 to $29,999 group. The next largest groups are the $30,000 to $49,999, and $50,000 to $79,999 with around 6,655 and 6,150 people, respectively.

Household Income

The Sarnia's median household income is $77,500, according to 2020 data.

Below national average Sarnia's median household income is 6,500 dollars below the Canadian national median of $84,000 (2020 data, 2021 Census).

The data provides important insights into the city's economic landscape as well as the living standards of its population.

Analyzing such data enables researchers, policymakers, and businesses to gain a more comprehensive understanding of the city's income distribution, disparities, and trends.

Education Levels in Sarnia

This data sheds light on the distribution of Sarnia residents across educational milestones.

Such information is crucial in shaping the province’s policies on education, workforce development strategies, and initiatives that aim to improve access to quality education and promote lifelong learning opportunities.

60.40% or most of the Sarnia population has a Postsecondary certificate, diploma or degree. 28.75% of the population has a High (secondary) school diploma or equivalency certificate, 19.40% has a Bachelor's degree or higher, and 10.85% has No certificate, diploma or degree.

Only using 25% sample data.
DegreeMenWomenTotalPercentage
Postsecondary certificate, diploma or degree27,98029,07057,05060.40%
High (secondary) school diploma or equivalency certificate13,46014,68528,14028.75%
Bachelor's degree or higher8,23010,03018,26519.40%
No certificate, diploma or degree5,5905,65511,24510.85%

Below national average 19.4% of Sarnia's population has a bachelor's degree or higher, compared to the national average of 32.9% (Canada, 2021 Census).

Employment in Sarnia

This dataset provides a snapshot of employment trends in Sarnia. It encompasses a wide range of sectors, industries, as well as job categories.

The data shows that the unemployment rate in Newfoundland and Labrador is at 7.09% which is quite high.

Only using 25% sample data.
StatusPercentage
Employment rate47.64%
Unemployment rate7.09%

Working as an Employee

The table shows the data on the total number of individuals in the city who work as an employee. The majority of Sarnia's population (around 72.90%) are working permanent position as an employee.

Self-employed

In the city, there are 1,910 men and 1,425 women working as self-employed individuals, bringing the total number to 3,330.

Only using 25% sample data.
StatusMenWomenTotal
Self-employed1,9101,4253,330

Employment Industry Sectors

The Sarnia industry employment sector census data offers insights into the region's economic landscape. The distribution of employment in Sarnia is categorized and quantified, which reveals the region's economic composition.

Sarnia has a wide range of industries. Most of its population (16%) works in the health care and social assistance sector. The Retail trade sector comes second at 12%, followed by Construction at 10%.

Only using 25% sample data.
IndustryMenWomenPercentage
Health care and social assistance8304,34516%
Retail trade1,7452,24012%
Construction2,95533510%
Manufacturing2,55074010%
Accommodation and food services9451,6508%
Educational services6251,5607%
Professional, scientific and technical services1,1856456%
Administrative and support, waste management and remediation services1,0557005%
Transportation and warehousing9703654%
Other services (except public administration)6905954%
Public administration6805704%
Wholesale trade5251802%
Finance and insurance2604352%
Real estate and rental and leasing3002802%
Arts, entertainment and recreation2852952%
Agriculture, forestry, fishing and hunting2751651%
Mining, quarrying, and oil and gas extraction355701%
Utilities305701%
Information and cultural industries1451151%
Management of companies and enterprises1000%

Labour Market Snapshot

A quick snapshot of where Sarnia residents work — the leading industry sectors employing them, and the broad occupation categories they work in.

Top employer sectors in Sarnia: Health care and social assistance (16%), -45 Retail trade (12%), Construction (10%)

Top occupation categories in Sarnia: Sales and service occupations (28%), Trades, transport and equipment operators and related occupations (19%), Business, finance and administration occupations (12%)

Places of Work

The data offers insights into the commuting patterns as well as workplace distribution in the city. It provides a snapshot of workplaces, showing their geographic distribution and the flow of workers across different areas.

Only using 25% sample data.
Work LocationMenWomenTotalPercentage
Usual place of work10,7359,92520,66071.80%
Worked at home1,8552,6054,45515.50%
No fixed workplace address2,5159403,45512.00%
Worked outside Canada851051850.60%

Commuting

The data sheds light on how Sarnia residents travel to school or work. It highlights the frequency of different modes of transportation like walking, cycling, carpooling, and public transit.

The data is pivotal in the making of transportation policies as well as the development of transit systems. Ultimately commuting data contributes to improving the quality of life of Sarnia residents and sustainable urban planning.

Commuting Duration

This data reveals the average time that the residents of Sarnia spend traveling to their workplaces. It also sheds light on the efficiency of the city's public transit systems, and road networks, as well as the accessibility of the city.

Only using 25% sample data.
DurationPercentage
Less than 15 minutes55.50%
15 to 29 minutes33.10%
30 to 44 minutes6.90%
60 minutes and over2.70%
45 to 59 minutes1.80%

Marital Status

The statistics on marital status in Sarniashed light on its societal dynamics. It captures the diverse types of marital statuses of the population.

Long-term commitments, such as common-law partnerships, civil unions, and marriages, reflect the city's social fabric. We can gain insights into Sarnia's changing preferences and norms by examining the trends in marital status.

Married or living common-law
55.42%
Married or living common-law
44.58%

Language Spoken

The data below highlights city's linguistic diversity, showing elegances of solo language as well as bilingual harmonies. Other than language, it also shows the cultural landscape in Canada.

English is the most spoken official language in Sarnia. About 69,425 people living in the province speak English, 1,435 people speak French, 250 people speak Neither English nor French language, and 160 people speak English and French language.

LanguagePopulation
English69,425
French1,435
Neither English nor French250
English and French160

Mother Tongue & Home Language

Useful for newcomers researching an area: this shows the language residents first learned at home in childhood (mother tongue) and the language they speak most often at home now, which can differ as families settle in.

LanguageMother TongueSpoken Most Often at Home
English87.5%94.7%
Non-official languages8.5%3.4%
French2.2%0.5%

Religion

Sarnia is predominantly Christian. About 40,315 of its population is Christian (18,525 males and 18,525 females).

The second largest religion in the province is Muslim with 1.2% of the population adhering to the religion. There are also Hindu and Sikh, both represent 1.1% and 0.4% of the population, while Buddhist represent 0.2% of the population.

ReligionPopulation
Christian56.8%
Islam1.2%
Hindu1.1%
Sikh0.4%
Buddhist0.2%
Jewish0.1%

Points of Interest in Sarnia

Schools

Parks

Libraries

Community Centres

Places to Visit in Sarnia

Museums

Historic Sites

Theatres

Green Spaces in Sarnia

NameTypeApprox. Area
Huron ParkParks
Gratiot ParkParks1.0 ha
Baxter ParkParks3.3 ha
Waterfront ParkParks16.2 ha
Mike Weir ParkParks16.6 ha
Cathcart ParkParks3.3 ha
Veteran's ParkParks0.6 ha
Germain ParkParks26.3 ha
Canatara ParkParks78.9 ha
Seaway Centre ParkParks1.3 ha
McCrae ParkParks1.0 ha
Norm Perry ParkParks3.5 ha
Avondale ParkParks0.3 ha
Jaycee ParkParks0.9 ha
Amerindians Sculpture ParkParks0.8 ha
Perch Creek Habitat Management AreaNature Reserves

Areas are approximate, calculated from OpenStreetMap boundary data.

Frequently Asked Questions about Sarnia

According to the 2021 census, Sarnia has a population of approximately 72,047 people.

Between 2016 and 2021, the population of Sarnia increased by 0.63%.

Sarnia has a population density of approximately 439.60 people per square kilometre.

Sarnia covers a land area of approximately 163.90 km².

The median age of the population in Sarnia is 46.00 years.

The largest ethnic or cultural origin group in Sarnia is English.

The median household income in Sarnia is $77,500, based on 2020 data.

English is the most common first official language spoken in Sarnia.

Christian is the predominant religion in Sarnia.

Statistics Canada (statcan.gc.ca) conducted the 2026 Census of Population in May 2026. However, census data goes through an extensive processing, validation, and quality-assurance period before public release. Based on the release plan, the 2026 Census results begin rolling out on February 10, 2027, with complete community-level profiles available by December 1, 2027. Until then, this page uses 2021 Census data as its primary source, supplemented by a population projection estimate for 2026 calculated using the compound annual growth rate (CAGR) from the 2016–2021 Census period.