J3X

J3X had a population of 21,198 in the 2021 Census in Montréal. Its population density makes it a small-town or exurban area.

There were 8,538 private dwellings across 95 km².

Median household income was 23% higher than the national figure.

Median after-tax household income was 18% higher than the national figure.

The median age was about the same as the national figure.

The unemployment rate was 58% lower than the national figure.

The share of people in low income (LIM-AT) was 59% lower than the national figure.

Average household size was about the same as the national figure.

• Median household income in J3X is 23% higher than the national figure.
• Median after-tax income in J3X is 18% higher than the national figure.
• Median age in J3X is about the same as the national figure.
• Unemployment rate in J3X is 58% lower than the national figure.
• Low income (LIM-AT) in J3X is 59% lower than the national figure.
• Average household size in J3X is about the same as the national figure.

7% of J3X’s residents live in a block Statistics Canada classifies as an amenity-dense neighbourhood — one with a grocery store, pharmacy, health care, child care, a primary school, a library, a transit stop and a source of employment all in range. Nationally it is 16%. This is StatCan’s composite, not ours.

• These measure how close an amenity is, never its quality. A school 500 m away is a school 500 m away — nothing here says anything about the school itself.
• The proximity index is scaled against all of Canada, where 1 is the single most well-served block in the country and the national average is close to zero. It is useful for comparing places and misleading as a score.

Source: Statistics Canada, Proximity Measures Database (17-26-0002), 2021 reference year. Data current as of 2026-08-12. Statistics Canada Open Licence. Measured at the dissemination block and aggregated to this postal area, weighted by population.

J3X sits inside one CMHC survey zone, Beloeil/McMasterville etc..

Reliability is CMHC’s own code for how much the sample supports the figure, from excellent to use with caution. Where several zones cover J3X, the weakest of their codes is shown.

• Neither figure is "the rent" for this area. One is a survey of buildings, the other a survey of listings, and both describe areas larger than a postal code.

Source: Statistics Canada, table 46-10-0092 (asking rents, experimental). Data current as of January 2026. Statistics Canada Open Licence. Experimental estimates drawn from online listings, published for selected metropolitan areas only.

Adapted from Canada Mortgage and Housing Corporation, Rental Market Survey, October 2025. This does not constitute an endorsement by Canada Mortgage and Housing Corporation of this product.

Source: Environment and Climate Change Canada, Air Quality Health Index. Data current as of live feed. Open Government Licence – Canada. This is the only live figure on this page; everything else is annual or from the census.

All 76 facilities within 10 km — including the 64 not listed above — together reported 10,697 t released to air in 2024. That is what was reported within 10 km — not what reached this area, which depends on stack height, wind and chemistry that this inventory does not model.

• The inventory is threshold-based: a facility reports only when it exceeds a quantity for a listed substance. Smaller emitters, road traffic, home heating and agriculture are not in it.
• Quantities are reported by the facilities themselves and are estimates, not measurements at the fence line. Being close to a facility is not the same as being exposed to what it reports.
• Dioxins and furans are reported in grams of toxic equivalent, a toxicity-weighted figure that cannot be added to a tonnage. Facilities reporting them are marked, and those grams are left out of every tonnage here — the rest of what those facilities released is counted.

Source: Environment and Climate Change Canada, National Pollutant Release Inventory. Data current as of 2024 reporting year. Open Government Licence – Canada.

• The Crime Severity Index weights offences by seriousness and is set so that Canada in 2006 = 100. A rate per 100,000 counts incidents without weighting them. The two are not interchangeable and should not be compared to each other.

Source: Statistics Canada, table 35-10-0026 (crime severity index); table 35-10-0177 (incident-based crime statistics). Data current as of 2025 reference year. Statistics Canada Open Licence. Police-reported crime only — offences that are not reported to police are not counted anywhere in these figures.

Do these figures describe a specific address in J3X?

No. J3X is a forward sortation area — the first three characters of a postal code — and every figure here describes the whole of it. That is the finest granularity Canadian open data supports; a full six-character postal code requires a licensed Canada Post file. Conditions on one street can differ from the area average.

Why is the crime figure for Montréal, Quebec rather than for J3X?

Police-reported crime is not published for postal areas anywhere in Canada. Statistics Canada publishes it by police service, aggregated to metropolitan areas and provinces, which for J3X means Montréal, Quebec. There is no municipal feed covering this area, so the regional figure is the finest available.

How current is this profile?

The census figures are from the 2021 Census. The other panels carry their own dates, shown beside each one, because they are published on different schedules — crime annually, CMHC rents each October, asking rents quarterly, and the air quality index live. Each figure is labelled with the vintage it came from rather than the date you are reading it.

Does this page rank or score J3X?

No. There is no score, no grade, no star rating and no ranking against other areas. Every figure is a measurement with a source, a date and a stated granularity, and none of them are combined. The site describes places using published statistics; it does not draw conclusions about the people who live in them.