Quebec · Census Agglomeration
Thetford Mines by the numbers
Thetford Mines is Canada's 97th largest metro area, home to about 30K people, growing slower than the country since 2021 (+4.5% vs +9.3%). A two-bedroom rents for about $819, the median age is 53.6 and January averages -12°C.
People
Population of Thetford Mines
The Thetford Mines census agglomeration had an estimated 29,602 people on July 1, 2025, up +4.5% since 2021 (Canada grew +9.3%). The 2021 Census counted 28,287 people, +2.6% more than in 2016.
The City of Thetford Mines itself had an estimated 27,155 residents in 2025.
Municipalities in the Thetford Mines area
| Municipality | 2025 estimate | 2021 Census | 2016–21 growth | People / km² |
|---|---|---|---|---|
| Thetford Mines | 27,155 | 26,072 | +2.6% | 115 |
| Saint-Joseph-de-Coleraine | 1,920 | 1,820 | +3.3% | 14 |
| Saint-Adrien-d'Irlande | 352 | 395 | -1.0% | 7 |
Sources: Statistics Canada, Table 17-10-0148-01, Statistics Canada, Table 17-10-0155-01, Statistics Canada, Table 98-10-0003-01
2021 Census
Who lives in Thetford Mines
Age
Median age is 53.6 (Canada: 41.6). 32.5% of residents are 65 or older and 13.6% are under 15.
Languages
23.4% can speak both official languages. At home, 0.8% speak mostly English, 97.1% mostly French and 1.1% mostly another language.
Immigration
— of residents are immigrants (Canada: 23.0%), and — arrived between 2016 and 2021.
Education: 13.8% of 25 to 64 year olds hold a bachelor's degree or higher; 21.9% have a college or CEGEP diploma and 30.6% a trades certificate.
Sources: Statistics Canada, Table 98-10-0030-01, Statistics Canada, Table 98-10-0223-01, Statistics Canada, Table 98-10-0227-01, Statistics Canada, Table 98-10-0302-01, Statistics Canada, Table 98-10-0384-01
Money
Income and jobs in Thetford Mines
Half of Thetford Mines households made more than $57,200 in 2020 and half made less. Across Canada the median was $84,000.
Housing
Housing in Thetford Mines
Average rent (October 2025)
A two-bedroom apartment rented for $819 a month on average, +10.2% from a year earlier and +51.4% over five years.
Sources: Statistics Canada, Table 98-10-0258-01, Statistics Canada, Table 98-10-0256-01, Statistics Canada, Table 98-10-0253-01, Statistics Canada, Table 34-10-0133-01, Statistics Canada, Table 34-10-0127-01
Commuting
Getting around Thetford Mines
Census day 2021 fell during the COVID-19 pandemic, so transit use is lower than in normal years.
Climate
Thetford Mines weather and climate
30-year averages (1981–2010) from the Thetford Mines weather station, 3.9 km from the city centre.
Source: Environment and Climate Change Canada, Canadian Climate Normals 1981–2010
Out of all Canadian metro areas with data
How Thetford Mines ranks
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Cities near Thetford Mines
FAQ
Thetford Mines questions, answered
What is the population of Thetford Mines?
The Thetford Mines metro area had an estimated 29,602 people on July 1, 2025 (Statistics Canada). The City of Thetford Mines itself had about 27,155.
How much is rent in Thetford Mines?
In October 2025 the average rent in Thetford Mines was $663 for a one-bedroom and $819 for a two-bedroom apartment (CMHC Rental Market Survey).
What is the average household income in Thetford Mines?
The median household income in Thetford Mines was $57,200 before tax in 2020 ($51,200 after tax), according to the 2021 Census. The average was $71,200.
How cold does it get in Thetford Mines?
January averages -11.6°C, with average lows of -15.9°C. Thetford Mines gets about 364 cm of snow a year, and in July the average daily high is 23.5°C (1981–2010 climate normals).
Is Thetford Mines bilingual?
23.4% of people in Thetford Mines can speak both English and French; 0.3% speak English only and 76.1% French only (2021 Census).
What is the median age in Thetford Mines?
The median age in Thetford Mines was 53.6 in the 2021 Census, compared with 41.6 for Canada.
Built October 30, 2026 from the latest published official data.