Corunnain St. Clair, Ontario
In Ontario, this town has 15,872 residents. It is part of the Sarnia metro area.
Is Corunna a good place to live?
Taken together, its subjects give Corunna a B overall, better than just over three fifths of Canadian towns. The ranking puts it #360 of 858 in Ontario. Safety is its strong suit (A). It is strong on jobs & income as well (A−). Homes are dear (C). Its remaining grades are unremarkable: C+ for schools and B− for walkability.
Safety is the police detachment's figure, shared with the towns and countryside around it. Health is graded on the health region's survey figures and life expectancy, with the distance to hospital giving the town its own spread.
How Corunna grades
Each subject compares Corunna with Canadian towns of 2,500 or more, ordered by how far it is from the middle. Towns in other countries are graded separately.
How TownRatings grades Canadian towns →
What makes Corunna stand out
The 2 things Corunna does most differently from other towns.
The data
Data highlights are ordered by what stands out in Corunna.
The force covering Corunna records less serious violence than Ontario’s towns or Canadian towns, at 39
Where it is policed, thefts, break-ins and damage came to 12.2 per 1,000 a year, below Ontario’s towns (30.5) and Canadian towns (31.2) alike. Violence across its police area runs at 6.4 per 1,000 residents a year.
Year by year · Crime Severity Index for each year
| 2023–2025 | Corunna | Ontario | Canada |
|---|---|---|---|
| Property crime per 1,000 | 12.2 | 30.5 | 31.2 |
| Crime Severity Index | 32 | 56 | 67 |
| Violent Crime Severity Index | 39 | 76 | 86 |
| Violent crime | 6.4 | 10.5 | 12 |
Statistics Canada, Uniform Crime Reporting Survey, 2023–2025 average · Area behind the Crime Severity Index, Violent Crime Severity Index, violent crime and property crime per 1,000 figures: the Lambton (St. Clair/Lambton Shores) detachment area
Commuters in Corunna have a short way to work, 22 min on average, less than in Ontario’s towns and Canadian towns
How working residents got to work · census 2021
| Census 2021 | Corunna | Ontario | Canada |
|---|---|---|---|
| Average trip | 22 min | 29 min | 26 min |
Statistics Canada, Census 2021 (labour and commuting) · Census day was in May 2021, mid-pandemic, so commuting and work figures carry the lockdowns’ mark.
Corunna is on Canada’s flood inventory: 1 listed, led by St. Clair Region Conservation Authority
About as many homes carry radon around Corunna as elsewhere, 8.4% over the guideline where the typical town has 6.6%. Shaking is about as much of a worry in Corunna as in most places, at $0.017 a year per $1,000 of building value ($0.030 typical).
Radon tests above the guideline · share of tested homes, 200 Bq/m³
| Hazards | Corunna | Ontario | Canada |
|---|---|---|---|
| Radon tests above the guideline | 8.4% | 4% | 6.6% |
| Earthquake loss per $1,000 of buildings a year | $0.017 | $0.043 | $0.030 |
NRCan seismic risk model and burned areas, Health Canada radon survey, the Flood Hazard Map Inventory
In Corunna, just 10% of households give 30% or more of their income to shelter; the typical Canadian town has 18%
Measured across the Sarnia metro area: rent as a share of income and monthly rent for a two-bedroom
Owners put the median home at $400,000, lower than Ontario’s towns ($695,000) and near Canadian towns ($406,000). Households that own their home make up 86%.
What homes were worth · The median owner’s estimate at the 2021 census
| Census 2021 | Corunna | Ontario | Canada |
|---|---|---|---|
| Households spending 30%+ on shelter | 10% | 22% | 18% |
| Households owning their home | 86% | 76% | 74% |
| Median home value, 2021 | $400,000 | $695,000 | $406,000 |
| Rent as a share of income | 18% | 22% | 20% |
Statistics Canada, Census 2021; CMHC Rental Market Survey via Statistics Canada · Home values are owners’ own estimates at the May 2021 census, and incomes are for 2020.
Life expectancy around Corunna is 80.0 years, 1.5 less than for the typical Canadian town
Homes here are 13 km from a hospital on average, higher than both Ontario’s towns (3.3 km) and Canadian towns (3.7 km). The region has more smokers than Ontario, 14% of adults to 11%. The survey puts the region’s share in very good or excellent health at 49%, behind the 51% for Ontario.
Very good or excellent health · adults, age-standardised
| Health | Corunna | Ontario | Canada |
|---|---|---|---|
| Smokers | 14% | 10% | 12% |
| Life expectancy at birth | 80.0 | 82.8 | 81.5 |
| Very good or excellent health | 49% | 51% | 52% |
| Chronic conditions (average share) | 18% | 17% | 17% |
Statistics Canada, Canadian Community Health Survey 2023/2024 and life expectancy 2022/2024; Open Database of Healthcare Facilities · Data for health survey and life expectancy covers the Lambton Health Unit
The nearest high school to Corunna is 17 km away
Over three years, results rose at 4 of its 7 tested schools. Schooling here is split between 2 boards, below both Ontario’s towns (4) and Canadian towns (3). Results are mixed: 1 of 7 schools above the middle in Ontario, 3 below it.
| School | Level | Students | System |
|---|---|---|---|
| Sir John Moore Community School Middle fifth in OntarioLargest elementary schoolElementary · Grades JK–8 | Elementary · Grades JK–8 | 465 | English public |
Schools by system · Schools within 3 km
| Schools within 3 km | Corunna | Ontario | Canada |
|---|---|---|---|
| Nearest secondary school | 17 km | 1.2 km | 1.2 km |
| School boards | 2 | 4 | 3 |
Provincial school lists and results, 2024-25
Midwinter lows in Corunna stay above those of 83% of Canadian towns
Frost comes on 131 days a year, below both Ontario’s towns (139) and Canadian towns (159). Most of the snow comes in January, about 34 cm. The most precipitation falls in June: 93 mm in a normal year.
Average high by season · ECCC normals, 1991–2020
| Normals, 1991–2020 | Corunna | Ontario | Canada |
|---|---|---|---|
| January night low | −8.2°C | −9.1°C | −13.5°C |
| Snowfall a year | 112 cm | 146 cm | 141 cm |
| Days with frost a year | 131 | 139 | 159 |
| July afternoon high | 26.5°C | 26.7°C | 25.5°C |
Environment and Climate Change Canada, Canadian Climate Normals 1991–2020 (Sarnia)
Expect November days around 8°C in Corunna, nights around freezing
November normally sees 80 mm of precipitation. Looking ahead to December, expect highs near 2°C and lows near −4°C. A typical November adds 7 cm of snow. Hour-by-hour figures come from ECCC’s Sarnia forecast, on the Weather page.
Normal highs, the months ahead · ECCC normals, 1991–2020
| Season | High | Low | Rain and snow |
|---|---|---|---|
| Winter | 0°C | −7°C | 164 mm |
| Spring | 12°C | 2°C | 221 mm |
| Summer | 25°C | 15°C | 244 mm |
| Autumn | 15°C | 6°C | 242 mm |
ECCC normals, 1991–2020 (Sarnia); the forecast is on the Weather page
Corunna spends more per resident than four in five Ontario’s lower-tier municipalities
Corunna is in Sarnia—Lambton—Bkejwanong, its riding (a federal electoral district, which elects one MP), and the seat belongs to Marilyn Gladu of the Conservative Party of Canada.
| Turnout | Corunna | Ontario | Canada |
|---|---|---|---|
| Municipal election, 2022 | 39% | 31% | 31% |
Wikidata, MAMH, MMAH, Statistics Canada
Corunna’s public library works from 7 branches
By name: Lambton County Library - Brigden, Lambton County Library - Corunna, Lambton County Library - Courtright and 4 more.
Provincial library statistics, OpenStreetMap, the CRA and Statistics Canada
Bickford Oak Woods Conservation Reserve begins at the edge of Corunna
0.4% of the land and water within 10 km is protected (the typical Canadian town: 2.3%). Point Pelee National Park is the closest national park, 74 km from town. The closest provincial park is Clear Creek Forest Provincial Park, 46 km from the edge of town. One mapped walking route passes within 2 km: the Coyle Drain.
Protected land · of the land within 10 km
| Outdoors | Corunna | Ontario | Canada |
|---|---|---|---|
| Protected land within 10 km | 0.4% | 2.3% | 2.3% |
| Public protected areas within 10 km | 2 | 4 | 4 |
Canadian Protected and Conserved Areas Database (CPCAD), OpenStreetMap routes and beaches
Fewer of Corunna’s people belong to a visible minority than in Ontario’s towns or Canadian towns: 1.8%
People 65 and over make up nearly a quarter of the town, above Ontario’s towns (19%) and Canadian towns (19%) alike. One measure of family life: 17% of residents are under 15.
Ages · Share of residents in each age group, Census 2021
Schooling · Highest qualification, residents 15 and over
Women and men · all residents
Women make up 49.8% of Corunna
7,305 women and 7,360 men at the 2021 census; across Canada, women are 50.9%.
| Corunna | Ontario | Canada | |
|---|---|---|---|
| Under 15 | 17% | 15% | 16% |
| 15 to 64 | 61% | 65% | 64% |
| 65+ | 23% | 19% | 19% |
| No certificate, diploma or degree | 13% | 15% | 16% |
| Postsecondary qualification | 56% | 56% | 56% |
Statistics Canada, Census 2021; Ontario and Canada: medians of towns of 2,500+
Everything we know about Corunna
Moore Museum and 2 more in and around Corunna
A first look at Corunna’s museums, historic sites and days out, and a few just outside town.
Big drawMuseumWallaceburg and District Museum4.2 km outside town, to the south · 1M visitors a yearMuseumMuseumSombra Museumin townPhotos: each place’s Wikidata image, from Wikimedia Commons under the licence below (our copy, resized).
Photo credits (1)
- Wallaceburg and District Museum: Wallaceburghistory, Public domain, Wikimedia Commons
Famous people from Corunna
4 notable people were born in Corunna.
About Corunna
Town in Ontario
Every figure TownRatings gives for Corunna covers the municipality as Statistics Canada maps it, one census subdivision in Ontario.
Statistics Canada: population estimates 2025 (17-10-0155), Census of Population 2021, 2021 census boundaries.
- Population
- 15,872 (people, 2025 estimate)
- Province or territory
- Ontario
- Census division
- Lambton
- Metro area
- Sarnia
- Census subdivision
- 3538003
Corunna’s neighbours
The nearest places of 1,000 or more. Statistics Canada
| Town | People | km | Overall | Cost | Safety | Health |
|---|---|---|---|---|---|---|
| Corunna | 15,872 | — | B | C | A | C+ |
| Point Edward | 1,989 | 19 | — | C− | C | B− |
People: Statistics Canada, Census 2021. Distances: centre to centre.
Questions about Corunna
Who are the people of Corunna?
Visible minorities are 2% of the population, where the middle of Canadian towns is 15%. Immigrants make up 5%, and Indigenous people 4%.
What kind of homes are in Corunna?
89% of homes are single-detached houses, against 64% for the median of Canadian towns, and 1% are in apartment buildings of five storeys or more. A household averages 2.4 people; 23% are one person living alone.
Is Corunna growing?
It added people: 14,086 in 2016, 14,659 in 2021, 4.1% more, where the middle of Canadian towns grew 4.1%. Statistics Canada’s 2025 estimate is 15,872.
Sources: Statistics Canada, Census of Population 2021 · population estimates 2025 (17-10-0155) and 2021 census boundaries · Uniform Crime Reporting Survey 2023–25 (35-10-0026, 35-10-0183 to 35-10-0190) · CMHC rents as published by Statistics Canada (34-10-0133) · grades by TownRatings. 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).