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C+Safety Grade
Safety in Montmorency · SSMSI, 2023–2025

Montmorency stands out for drug dealing: 2.2 times the rate of a typical town its size

Its letter overall is C+ (#24 of 73 in Val-d'Oise): close to the middle of compared French towns, from offenses police and gendarmerie recorded through 2023 to 2025. Police and gendarmerie recorded 13 cases of drug dealing in Montmorency in 2025, a rate of 0.6 per 1,000 against a typical 0.3. Even so, the graded rate fell 28% from 2023 to 2025.

Violence
5.9
recorded per 1,000 residents a year · in the grade
Burglary, vehicle theft, damage
16.8
burglaries, vehicle thefts, thefts from vehicles, criminal damage · in the grade
Theft and fraud
10.8
theft without violence, fraud, per 1,000 residents a year · Not in the grade
Drug use
2.6
recorded offenses per 1,000 residents a year · Not in the grade

Offenses recorded per 1,000 residents a year, 2023–2025 average (INSEE population of each year). Violence, and burglaries, vehicle thefts, thefts from vehicles and criminal damage, count equally.

What stands out · In brief

What stands out about safety in Montmorency

Theft from vehicles fell sharply

Police and gendarmerie recorded 91 cases of theft from vehicles in Montmorency in 2023 and 23 in 2025. Small counts swing from year to year; the grade averages the three years. Year by year ↓

Less violence than burglary, vehicle theft and damage

Montmorency recorded an average of 5.9 violent incidents per 1,000 residents a year, 2023–2025, fewer than in 62% of compared French towns, and 16.8 burglaries, vehicle thefts, thefts from vehicles and acts of criminal damage, fewer than in 32%. Safety Grade ↓

Among towns its size

Among the 352 French towns of 15,200 to 29,400 people with a Safety Grade, Montmorency is 97th from the lowest recorded rate per resident. Towns its size ↓

Written from the SSMSI and INSEE data on this page. Figures are offenses police and gendarmerie recorded, not convictions.

Safety Grade

Montmorency: C+ for safety, and why

Violence: physical, sexual, armed robbery (5.9 per 1,000 residents a year, 2023–2025 average)Lower rate than in 62% of compared French towns
Burglary, vehicle theft and damage (16.8 per 1,000 residents a year, 2023–2025 average)Lower rate than in 32% of compared French towns
C+B−

A fairly firm grade. Built on 1,480 offenses recorded in the graded categories over three years; with a town of 21,763, a few cases more or fewer would move it between C+ and B−.

Hidden counts: for armed robbery, this figure isn’t published when it’s small (five or fewer in at least one of the last three years); the index uses the département’s average instead, 0.3% of the index here. What isn’t published ↓

Per resident, against the 4,295 compared French towns with a Safety Grade.

Year by year

Montmorency, year by year

Violence · per 1,000 residents

20236.3
20245.8
20255.6

Burglary, vehicle theft, damage · per 1,000 residents

202321.2
202415.2
202514.1
KindIn the grade202320242025
Family violenceViolence734956
Other physical violenceViolence325036
Sexual violenceViolence312529
Armed robberyViolencen.p.n.p.n.p.
BurglaryBurglary, vehicle theft, damage697164
Vehicle theftBurglary, vehicle theft, damage704552
Theft from vehiclesBurglary, vehicle theft, damage915123
Criminal damageBurglary, vehicle theft, damage232163168
Theft without violenceNot in the grade718692
Robbery without a weaponNot in the grade978
Theft of vehicle partsNot in the grade655138
FraudNot in the grade138157164
Drug useNot in the grade755045
Drug dealingNot in the grade11913

Counts mix units, as SSMSI publishes them: victims for violence, offenses for burglary and damage, vehicles for vehicle theft. That’s why the page never adds them into one “total crimes”.

Offenses recorded each year. n.p.: not published (small: five or fewer in at least one of the last three years).

By type

What police and gendarmerie recorded most in 2025

Criminal damage7.7
Fraud7.5
Theft without violence4.2
Burglary2.9
Family violence2.6
Vehicle theft2.4
Drug use2.1
Theft of vehicle parts1.7
Other physical violence1.7
Sexual violence1.3
Theft from vehicles1.1
Drug dealing0.6
Robbery without a weapon0.4
ViolenceBurglary, vehicle theft, damageNot in the gradeMedian of towns its size

Well above the median of towns its size: drug dealing (0.6 per 1,000 against 0.3). Not published for 2025: armed robbery.

Theft without violence, robbery without a weapon, theft of vehicle parts, fraud and drug offenses are shown for information but left out of the Safety Grade, which counts violence plus burglaries, vehicle thefts, thefts from vehicles and criminal damage per resident.

Per 1,000 residents in 2025; the tick is the median of the graded French towns of 10,000 to 50,000.

Towns its size

Set against 352 towns its size, Montmorency is 97th

#TownPeopleViolenceHomes, vehiclesSafety
1Montrevault-sur-Èvre Maine-et-Loire15,72658A
…
24Jouy-le-Moutier Val-d'Oise17,8545.912.2B+
…
30Vauréal Val-d'Oise16,0795.813B
…
60Cormeilles-en-Parisis Val-d'Oise27,2925.615.2B−
…
66Saint-Leu-la-Forêt Val-d'Oise16,1385.515.6B−
…
94Soisy-sous-Montmorency Val-d'Oise18,0087.615.1C+
95Segré-en-Anjou Bleu Maine-et-Loire17,66710.312.4C+
96Pertuis Vaucluse19,5487.515.2C+
97Montmorency Val-d'Oise21,7635.916.8C+
98Macouria French Guiana19,89912.110.6C+
99Saint-Gratien Val-d'Oise21,3367.215.6C+
100Vertou Loire-Atlantique26,227517.8C+
…
352Marseille 2e Bouches-du-Rhône24,37820.1103.2D−

Per 1,000 residents a year. Context only: the grade compares Montmorency with every compared French town, not just towns its size.

Lowest rate in the graded categories first, 2023–2025 average, with the closest to Montmorency and up to four from Val-d'Oise.

For every 1,000 residents

About 6 in 1,000: recorded violent incidents a year

ViolenceBurglary, vehicle theft, damageTheft and fraud (not in the grade)
6
recorded violent incidents
17
burglaries, vehicle thefts, thefts from vehicles and acts of criminal damage
11
thefts without violence and frauds
34
of the three together

Each dot is one resident’s share: offenses are counted, not victims, and one person can be the victim of several.

And 17 burglaries, vehicle thefts, thefts from vehicles and acts of criminal damage, and 11 thefts without violence and frauds: a year, 2023–2025 average.

What isn’t published

1 kind of crime isn’t published for Montmorency

Share of the index resting on Val-d'Oise averages0.3% · limit 25%

Over 25%, no Safety Grade; over 10%, the grade says it is less certain.

SSMSI doesn’t publish a commune’s count when it’s small (five or fewer in at least one of the last three years), and publishes instead the average among the Val-d'Oise communes whose count is hidden. That average stands in for Montmorency’s hidden cells, never a zero; here it is 0.3% of the index, so the grade rests on Montmorency’s own figures.

Hidden for MontmorencyYearsVal-d'Oise average
Armed robbery2023–20251.4 · 2 · 1.6

The counts SSMSI keeps back for Montmorency, and what the grade uses in their place.

Neighbors

Montmorency and the towns around it

ABCDNot graded
TownPeopleViolenceHomes, vehiclesSafety
Montmorency21,7635.916.8C+
Soisy-sous-Montmorency18,0087.615.1C+
Andilly2,742614.5B−
Deuil-la-Barre23,0997.118.5C
Groslay8,4537.119.6C
Enghien-les-Bains11,43211.318.4C−
Margency3,0122.815.4B+

3 of its 6 graded neighbors have a lower recorded rate in the graded categories than Montmorency.

The nearest towns of 2,500 or more, per 1,000 residents a year, 2023–2025 average.

How to read these numbers

What this data can and can’t tell you

  • Where offenses happen, not where victims live. SSMSI counts each offense in the commune where police or gendarmerie recorded it happening. Towns with shops, stations, a hospital or nightlife record more per resident, and visitors are part of that count but not of the population it is divided by.
  • An index, not a total. The kinds are counted in different units (victims, offenses, vehicles), so the grade adds their rates per 1,000 residents into an index and never shows a “total crimes” or a chance of being a victim.
  • Hidden counts. SSMSI doesn’t publish a commune’s count when it’s small (five or fewer in at least one of the last three years). In its place it gives the average among the département’s communes whose count is hidden; the grade uses that average, never zero, and a town gets no Safety Grade when over a quarter of its index would come from such averages.
  • Recorded, not all crime. Only offenses reported to or found by police and gendarmerie are counted. Reporting rates differ by kind: most vehicle thefts are reported, much family and sexual violence isn’t.

How the Safety Grade works in France →

Questions about safety in Montmorency

Is Montmorency safe?

It has more crime per resident than 56% of compared French towns: an average of 5.9 recorded violent incidents and 16.8 recorded burglaries, vehicle thefts, thefts from vehicles and acts of criminal damage per 1,000 residents a year, 2023–2025. It grades C+ for safety, #24 of 73 in Val-d'Oise. Among the 352 French towns of 15,200 to 29,400 people, it is 97th from the lowest rate.

Is crime going up in Montmorency?

The recorded rate in the graded categories fell 28% from 2023 to 2025: 27.5 per 1,000 residents in 2023, 19.7 in 2025. The grade uses the three-year average, so one unusual year moves it less.

What is the most common recorded offense in Montmorency?

Criminal damage: 168 in 2025. Then fraud (164), theft without violence (92) and burglary (64).

Sources: SSMSI (Interior Ministry), recorded crime by commune, 2023–2025 (base communale de la délinquance enregistrée, 2026 edition) · INSEE, legal populations for each year · INSEE, census 2023 (jobs and working residents) · IGN Admin Express (boundaries) · TownRatings grades: our own summary of the data, ranking French towns against each other only, updated November 4, 2026. Under the Licence Ouverte / Open Licence 2.0 (Etalab).

Contains public sector information under the Licence Ouverte / Open Licence 2.0 (Etalab): INSEE, DGFiP, the Interior Ministry’s statistics service (SSMSI), the Ministry of Education (DEPP), the Health Ministry’s statistics service (DREES) and the Housing Ministry (Carte des loyers). Commune boundaries: IGN Admin Express.