Photo: P199 · CC BY-SA 4.0More crimes per resident are recorded in Mille-Isles than in 64% of Canadian towns
Its Crime Severity Index dropped from 82.9 in 2023 to 74.1 by 2025. Still, a Safety Grade of C+ follows from crime the police covering Mille-Isles reported over the years 2023 to 2025. Recorded violent incidents ran at 20.6 per 1,000 residents a year and property crime at 20.0, against 12.0 and 31.2 in the typical Canadian town of 2,500+. Each of the 5 towns on its borders with figures records less crime per resident.
Statistics Canada, police-reported crime, 2023–2025 means. The index weighs each crime by its seriousness; rates are incidents per 1,000 residents a year. The crime severity, crime rate and incident counts numbers here cover the Argenteuil MRC.
What stands out about safety in Mille-Isles
More crime solved
Police cleared 49% of Mille-Isles’s crime, weighted by seriousness (65% of violent crime, 36% of the rest), against 34% across Canadian towns of 2,500 people or more. Questions ↓
Heavier than Quebec’s middle
Set among Quebec’s towns, whose median is 56.1, Mille-Isles scores 76.4. Towns its size ↓
Violent crime leads the index
Set beside the typical Canadian town of 2,500+, Mille-Isles’s two halves part ways: 122.2 for violence (typical 86.4) and 58.8 for the rest (typical 62.8). By type ↓
Written from Statistics Canada’s police-reported crime by police service and detachment, 2023–2025. Figures are what police recorded, not convictions.
The C+ for Mille-Isles, and how it is built
The grade weighs the Crime Severity Index and its violent half, averaged over 2023–2025, against every Canadian town and city neighbourhood of 1,000 people or more.
The Crime Severity Index and its two halves, beside the typical figure for Canadian towns of 2,500 people or more.
Mille-Isles’s crime by kind
Against the typical town its size, Mille-Isles runs highest on assault (9.9 per 1,000 against 6.7). Mischief and theft under $5,000 sit below it.
Every Statistics Canada violation line
| Violation | Incidents a year | Per 1,000 | Cleared |
|---|---|---|---|
| Homicide | 0.7 | 0.02 | — |
| Sexual violations against children | 23.7 | 0.6 | 72% |
| Assaults against a peace officer | 16.7 | 0.4 | 96% |
| Firearms: use, discharge, pointing | 5.7 | 0.2 | 40% |
| Robbery | 3.7 | 0.10 | — |
| Forcible confinement or kidnapping | 11 | 0.3 | 88% |
| Other violent violations | 42.3 | 1.1 | 69% |
| Breaking and entering | 108 | 2.9 | 20% |
| Possession of stolen property | 13.3 | 0.4 | 77% |
| Theft of a motor vehicle | 90.3 | 2.4 | 18% |
| Theft over $5,000 | 27.7 | 0.7 | 8% |
| Theft under $5,000 | 200 | 5.3 | 34% |
| Mischief | 102 | 2.7 | 21% |
| Weapons violations | 11 | 0.3 | 82% |
| Administration of justice violations | 124.3 | 3.3 | 91% |
| Other Criminal Code violations | 20.3 | 0.5 | 74% |
| Drug violations | 53.3 | 1.4 | 80% |
| Impaired driving | 90.7 | 2.4 | 94% |
| Failing to stop or remain | 68 | 1.8 | 19% |
Statistics Canada’s violation groups for the whole police service or detachment, incidents a year its own. Cleared: incidents solved by a charge or otherwise, as a share of those reported.
Incidents per 1,000 residents a year, 2023–2025 means, against the typical figure for Canadian towns of 2,500 people or more.
Mille-Isles, year by year
Crime Severity Index
Its heaviest year came first: 2023, at 82.9, against a low of 72.3 in 2024. In the same years the typical Canadian town of 2,500+ read 70.6 (2023), then 62.9 (2025).
Every year as a table
| Year | Mille-Isles | Typical town of 2,500+ |
|---|---|---|
| 2025 | 74.1 | 62.9 |
| 2024 | 72.3 | 68.5 |
| 2023 | 82.9 | 70.6 |
Statistics Canada, Crime Severity Index by police service, each year as published. Typical: the median of Canadian towns of 2,500 people or more.
The Crime Severity Index of the police covering Mille-Isles, each year, against the typical Canadian town of 2,500+.
About 780 violent incidents a year across the police area of 38,500 residents that includes Mille-Isles, 2023–2025
Violent incidents per 1,000 a year, 2023–2025
Property crimes per 1,000 a year, 2023–2025
Statistics Canada counts actual incidents; those police record as unfounded are listed apart and kept out of its crime rates and severity index. Each incident is filed under its most serious violation, which the survey sets partly by the maximum penalty.
And about 750 property crimes, plus 420 other violations, a year (2023–2025 average). Each dot is one resident; each coloured dot, one incident a year at the area’s rates.
Crime in the places around Mille-Isles
| Town | People | Severity index | Violent index | Safety |
|---|---|---|---|---|
| Mille-Isles | 1,886 | 76.4 | 122.2 | C+ |
| Morin-Heights | 5,086 | 53.5 | 71.6 | B |
| Saint-Sauveur | 12,112 | 53.5 | 71.6 | B |
| Sainte-Anne-des-Lacs | 4,080 | 53.5 | 71.6 | B |
| Gore | 2,756 | 76.4 | 122.2 | C+ |
| Piedmont | 3,667 | 53.5 | 71.6 | B |
| Prévost | 14,275 | 38 | 60.1 | A |
Every neighbour with a figure of its own has a lower index than Mille-Isles. Closest is Morin-Heights, 7.7 km away, at 53.5 to 76.4 here. One neighbour is on the same police service or detachment, so it shares the figure and isn’t compared here.
Each place’s police figures, 2023–2025 means.
What this data can and can’t tell you
- What clearance means. A crime is cleared when police lay or recommend a charge, or solve it another way; the weighted rate counts serious crimes for more.
- An index, not a verdict. One robbery outweighs a run of minor thefts here, since every crime counts by the sentences courts give it. Statistics Canada adds: “The CSI is not an indicator of overall safety and should be interpreted in the broader community context.”
- Policed as an MRC. The Sûreté du Québec’s figures are for its MRC as a whole, not for Mille-Isles alone.
- The index’s scale. Statistics Canada set the national index at 100 for 2006; every figure here is read against that.
Questions about safety in Mille-Isles
Is Mille-Isles safe?
Mille-Isles measures 76.4 on the Crime Severity Index for 2023–2025, next to 67.2 for Canadian towns of 2,500 people or more. Per 1,000 residents a year, its police record 20.6 violent incidents and 20 property crimes.
What is the most common crime in Mille-Isles?
Most often it is assault: 9.9 per 1,000 residents a year. Next come theft under $5,000 at 5.3 and Criminal Code traffic offences at 5.2.
Is crime going up in Mille-Isles?
No: the index fell 11%, from 82.9 in 2023 to 74.1 in 2025.
How much of Mille-Isles’s crime do police solve?
About 49% of crime is cleared, weighted by seriousness, with 65% of violent and 36% of other crime; the figure for the typical Canadian town of 2,500+ is 34%.
Whose figures are these?
A police service or detachment that covers Mille-Isles and other places, so the figures are shared.
Source: Statistics Canada, police-reported crime by police service and detachment, 2023–2025 (Statistics Canada Open Licence); TownRatings calculation.
Sources: Statistics Canada, Crime severity index and weighted clearance rates, police services (tables 35-10-0186 to 0190, 0061, 0063, 0064), 2023–2025 · Statistics Canada, Incident-based crime statistics by detailed violations, police services (35-10-0178 to 0185) · Safety Grade: TownRatings calculation. 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).