Photo: Nelro2 at en.wikipedia · CC BY 3.0A smaller share of residents who moved in within the year than 91% of Canadian towns: 6.8%
19% of residents are under 15; across Canada’s towns the figure is 16%. With about 10,402 residents in July 2025, Seaforth counted 3,705 households at the 2021 Census. The census found that 85% of households live in a single-detached house in the town. At 30%, the share of residents with no religion is lower than in nearly two thirds of Canadian towns. The census figures here are for the whole of Huron East, the municipality that includes Seaforth.
A +4% change since 2016: faster than 50% of Canadian towns
Figures are from the 2021 Census unless dated otherwise. The census counts of 2016 and 2021, the estimate after them, and the change set beside other towns.
Change, 2016 to 2021
Statistics Canada’s estimate for July 2025 is 9% higher again.
A larger share of residents aged 65 and over than 67% of Canadian towns: 22%
Share of residents in each five-year band; the tick is the typical town.
With a median age of 41.6, Seaforth is younger than 53% of Canadian towns. For comparison, 19% of residents are 65 or over across Canada’s towns. More residents are 60–64 than any other five-year age: 7.7% of residents. There is little gap on residents aged 15 to 24: 11%, about the same as across Canada’s towns.
Median age of Canadian towns of 2,500+
■ Seaforth, 41.6. The typical town is 42.
Broad ages · share of residents
Women and men · all residents
50% women, 50% men
About an even split.
Seaforth households average 2.5 people, larger than in 58% of Canadian towns
Private households by type and size.
Against Ontario’s towns and Canada’s towns
People per household
Canada’s towns.
Compared with 8.2% across Canada’s towns, 6.7% of households are one-parent families here. Census figures put one-person households at 27% in Seaforth.
Married residents 15 and over: 53%, a higher share than 72% of Canadian towns
Marital status of residents 15 and over, with common-law couples counted apart.
Marital status · residents 15 and over
23% of adults have never married and don’t live common-law (typical: 27%). Typically, 46% of residents 15 and over are married across Canada’s towns. The share of common-law partners stands at 9.7%.
Only 21% of households rent their home in Seaforth
Houses and apartments, owners and renters, older and newer homes. Prices, rents and shelter costs are on Cost of living.
Type of home
Owners and renters · share of households
When homes were built · share of homes
Older homes outnumber new: 53% predate 1961, 13% date from 2001 or later. On average, 25% of households rent their home across Canada’s towns. 0.1% of households live in a building of five or more storeys, about the same as across Canada’s towns.
$80,000 a year: where the middle household sits
The income year is 2020: a year of pandemic benefits such as CERB, which the figures count. Total household income: the median household, and the spread from low to high.
Households by income · share of households
Seaforth’s median household took in $80,000 before tax, 7% less than the median across Canada’s towns ($86,000). For Ontario’s towns, the median household income is $91,600. COVID-19 benefits went to 21% of residents with an income (typical: 28%).
6.3% of residents are immigrants
Immigrants by continent of birth and when they arrived, citizenship, and who moved in recently.
Immigrants, by continent of birth · share of all residents; the bar runs to 35%
When immigrants arrived · share of immigrants
Citizenship and moving · share of residents
5.8% of residents are not Canadian citizens across Canada’s towns, against 2% in Seaforth. Immigrants here were most often born in Europe (54%), then in the Americas (36%). Fewer immigrants than in 76% of Canadian towns: 6.3%.
70% said they are Christian and 30% that they have no religion
Visible minority, Indigenous identity and religion, as residents answered the census.
Visible minority and Indigenous identity · all residents
Religion · all residents
Set against 15% across Canada’s towns, 2.1% of residents belong to a visible minority in Seaforth. The census found that 1.9% of residents have an Indigenous identity in the town.
English is the mother tongue of 91%, and 2% speak French as well
English, French and the other languages people grew up with or speak at home.
Can hold a conversation in · share of all residents
Mother tongue · share of all residents
Compared with 7.5% across Canada’s towns, 2% of residents speak English and French here. Census figures put residents whose mother tongue is French at 0.4% in Seaforth.
Only 15% of residents 25 to 64 hold a bachelor’s degree or higher in Seaforth
From no certificate to a master’s: residents 25 to 64.
Highest qualification · residents 25 to 64
No certificate, diploma or degree is held by 17%; in the typical town the share is 9.5%. For comparison, 27% of residents 25 to 64 hold a bachelor’s degree or higher across Canada’s towns.
An employment rate of 61%
The census was taken in May 2021, during the pandemic, so these rates show a labour market still recovering. The census’s work rates at a glance. Jobs, industries and the commute are on Work & commute.
61% of residents 15 and over have a job; across Canada’s towns the typical share is 58%.
The 17th oldest of 41 towns of 10,168 to 10,643 people
Similar-sized towns by median age; each dot is a town.
Between McConachie (30.9) and Leeds and the Thousand Islands (52) lies the rest of the group. Closest in median age to Seaforth are Du Parc (41.2), Rexdale-Kipling (41.6), Dutrisac (42.8) and Dover (43.2).
3 in 5 nearby towns have a higher median age than Seaforth
The nearest places, coloured by median age; each links to its own page. The nearest places to Seaforth with figures are 19–30 km away.
| Town | People | Away | Median age | 65+ | Immigrants |
|---|---|---|---|---|---|
| Seaforth | 10,402 | — | 41.6 | 22% | 6.3% |
| Mitchell | 10,080 | 18.7 km | 40 | 19% | 5.9% |
| Clinton | 8,318 | 22.2 km | 48.8 | 27% | 7.3% |
| Morris-Turnberry | 4,028 | 27.6 km | 40 | 22% | 5.9% |
| Wingham | 5,411 | 29.8 km | 44 | 23% | 6.2% |
| Bayfield | 8,327 | 29.8 km | 52 | 27% | 7% |
Health, work, housing and schools
What this data can and can’t tell you
- The census’s own words. Indigenous identity, immigrant status and religion are as residents answered them. “Visible minority” follows the Employment Equity Act, meaning people other than Indigenous peoples who are non-white in colour or race. We compare these figures across towns; none is a label for a town.
- Against Ontario’s towns and Canada’s towns. For each measure we take the median of Ontario’s towns and neighbourhoods of 2,500 or more, then the median of all Canadian towns. Neither counts whole cities or reserves, and every percentile is a Canadian one.
- What these tables don’t give. Unpaid care, car ownership and internet access aren’t in the Census Profile, nor is the change by age since 2016. Ethnic origins other than visible minority and Indigenous identity are left out of the charts.
Questions about Seaforth’s residents
What religion are people in Seaforth?
70% are Christian and 30% have no religion; 0.7% follow another religion.
Is Seaforth good for families?
Under 15: 19% (Canada’s towns: 16%). Couple families: 60% of households. One-parent families: 6.7%. Schools near Seaforth are on its Schools page.
What is the median income in Seaforth?
The median household in Seaforth took in $80,000 in 2020, against $86,000 across Canada’s towns.
What is the population of Seaforth?
Seaforth had about 10,402 residents in July 2025, Statistics Canada estimates; the 2021 Census counted 9,512, 4% more than 2016.
What is the average age in Seaforth?
A median age of 41.6, younger than 53% of Canadian towns. Children under 15 make up 19%, and people 65 and over 22%.
Is Seaforth bilingual?
Both official languages are spoken by 2% of residents, against a typical 7.5% across Canada’s towns. 98% speak only English and 0% only French; 0.4% grew up with French.
How diverse is Seaforth?
6.3% of residents are immigrants (Canada’s towns: 17%); 2.1% belong to a visible minority and 1.9% have an Indigenous identity.
Sources: Statistics Canada, Census Profile, 2021 Census of Population · Statistics Canada, population estimates for 1 July 2025 (table 17-10-0155). Under the Statistics Canada Open Licence.
Adapted from Statistics Canada (Census of Population 2021, population estimates 2025, 2021 census boundaries) under the Statistics Canada Open Licence; this does not constitute an endorsement by Statistics Canada. Neighbourhood names in some cities © OpenStreetMap contributors (ODbL).