Lac-Brome by the Numbers
Population and dwelling counts from the 2021 Census; town facts and 2025 assessment figures from the Town of Brome Lake.
Tools like Immocalcul let you look up one specific address’s municipal assessment. This page does something different: it pulls together the town-wide numbers — how many people live in Lac-Brome, how fast that’s grown, how many households there are, and how the overall property assessment roll has moved — in one place, with sources.
A Town Built From Seven
The Town of Brome Lake (Lac-Brome) was created in 1971 by the amalgamation of seven municipalities and hamlets: Knowlton, Foster, Fulford, West Brome, Iron Hill, East Hill and Bondville. Knowlton remains the historic and commercial centre of the town, and the name most people outside the area still use for the whole place.
Population & Households
The 2021 Census is Statistics Canada’s official, point-in-time count — the most rigorous source, though not the most current.
| Metric | 2021 figure | Change since 2016 |
|---|---|---|
| Population | 5,923 | +7.8% |
| Private dwellings (occupied) | 2,828 | +10.3% |
| Land area | 206.9 km2 | — |
| Population density | 28.6 / km2 | — |
| Median household income | $75,000 | — |
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Population density is a simple calculation from the two figures above it, not a separately published Statistics Canada statistic.
Language
Lac-Brome is a genuinely bilingual town. In the 2021 Census, 66.5% of residents reported being able to conduct a conversation in both English and French, 17.5% in English only, and 15.6% in French only — only 0.2% reported neither official language. For English-speaking and American buyers, that means day-to-day life, services, and paperwork in Lac-Brome are workable in English, not just French. That mix has held roughly steady since 2016, when the split was 65.1% bilingual, 19.9% English only, 15.0% French only, and 0.1% neither.
The Town’s Own Current Facts
The Town of Brome Lake publishes its own more current administrative snapshot, which naturally runs a little ahead of the last official census: a population of 6,252, across 1,850 families. The town covers 206.9 km2 of land, of which 14.53 km2 is the lake itself, served by 260 km of roads and 15 km of public trails, with 11 parks and green spaces and 2 elementary schools spread across six electoral districts.
Property Values: the 2025 Assessment Roll
Lac-Brome’s new three-year municipal assessment roll (2025-2026-2027) took effect January 1, 2025. Town-wide, the average assessed value of a single-family home rose from $507,700 to $772,200 — an increase of 51.8%. The total value of the town’s assessment roll rose from $2.14 billion to $3.25 billion over the same revaluation.
A municipal assessment isn’t the same thing as a sale price — it’s the town’s basis for property tax, updated on a multi-year cycle, not a live market read. For actual sale prices and days-on-market, see the Brome Lake market article, which tracks CENTRIS transaction data directly.
In Summary
- Population 5,923 (2021 Census), up 7.8% since 2016 — a town growing faster than it was a decade ago.
- 2,828 occupied private dwellings, up 10.3% since 2016.
- Median household income $75,000.
- 84% of residents can speak English (66.5% bilingual, 17.5% English only) — 2021 Census.
- Average single-family assessed value up 51.8% on the new 2025 roll, to $772,200.
Lac-Brome’s modest population is also the reason most of the town falls outside Canada’s federal restriction on non-Canadian homebuyers — see how the foreign buyer ban actually works. And if a property here includes lake or river frontage, what riparian rights actually mean in Quebec is worth reading before you make an offer.