The picture is mixed. At C− overall, Méry-sur-Oise ranks #31 of 73 in Val-d'Oise. Nationally, it does better than 25% of compared French towns. Where it falls short is schools: bac results 3.9 points below the expected rate; brevet results 3.6 points below the expected rate. Cost of living is weaker too: at the median price, a 70 m² home costs 7.6 times the median annual income per consumption unit in the intercommunality. Fewer journeys need a car (A): 47% of residents live within 800 m of a bakery, and 26% of working residents walk, cycle or take public transport to work. Elsewhere it is close to typical: C+ for safety, B− for health and B for jobs & income.
Figures: amenities, INSEE BPE 2025 · commuting and employment, INSEE census 2023 · brevet and bac results, Ministry of Education · prices, DVF · income per consumption unit (an income adjusted for household size), INSEE Filosofi · recorded crime, SSMSI (Ministry of the Interior) · deaths, INSEE (by commune of residence, 2016–2025).
Hazard risk isn’t graded in France yet: national flood maps cover only some areas. The overall grade uses the other six subjects.
Each subject compares Méry-sur-Oise with other French towns of 2,500 or more, ordered by how far its rank is from the middle. American and UK towns are graded separately.
Hazard riskNot graded in France yet: national flood maps cover only some areas–
How TownRatings grades French towns →
Château · Inscrit · Photo: L’auteur n’a pas pu être identifié automatiquement. Il est supposé qu'il s'agit de : Clicsouris (étant donné la revendication de droit d’auteur). · CC BY-SA 3.0
Méry-sur-Oise’s story
Méry-sur-Oise in pictures
The Culture ministry lists 2 historic monuments in Méry-sur-Oise: 1 classé (France’s highest heritage protection) and 1 inscrit (the second level).
The oldest protected part dates from the 15th century; the first monument here was protected in 1915.
4.9% of its homes were built before 1919, against 7.4% in the median compared French town.
Data highlights are ordered by what stands out in Méry-sur-Oise.
Who lives here
A town of families: 22% of people in Méry-sur-Oise are under 15, more than in Val-d'Oise’s towns and across compared French towns
The 15-to-24 age group: 13%, near Val-d'Oise’s towns (12%) and higher than compared French towns (11%). Those 65 and older account for just over one in ten residents. Degrees are held by 38% of adults.
37.9median age
Méry-sur-OiseVal-d'Oise medianFrance median
Ages · share of residents
13%
Under 1515–2425–4445–6465+
Highest diploma · residents 15 and older who have left education
No diploma16%
CAP or BEP22%
Baccalauréat19%
Higher education38%
Women and men · all residents
51% women, 49% men
WomenFrance medianMen
About an even split. Median share of women: Val-d'Oise 51.5%, France 51.8%.
INSEE, census 2023 · Val-d'Oise median and France median: the median of compared communes
Schools
Bac results near Méry-sur-Oise run low: 83.5% passed, below Val-d'Oise’s towns and compared French towns
Primary schools aren’t graded: France doesn’t publish their results by school.
At the collèges within 5 km of Méry-sur-Oise, 85.4% passed the brevet, above Val-d'Oise’s towns (82.7%) but below compared French towns (87.5%). The bac pro: 78% of 320 candidates passed at the 3 vocational lycées within 5 km. Its collèges and lycées rank #32 of 76 in Val-d'Oise on results.
87%passed the bac (general and technological)DSchool Grade
Ministry of Education (DEPP) · brevet and bac 2025, value added (IVAC, IVAL) · Licence Ouverte
Work & commuteJobs & income B
25.7% of commuters in Méry-sur-Oise walk, cycle or ride, against 38.0% in Val-d'Oise’s towns and 13.4% in compared French towns
Nearly a tenth of the labour force were unemployed, lower than both Val-d'Oise’s towns (9.9%) and compared French towns (10.1%). Jobs based in Méry-sur-Oise number 2,150, against 4,650 residents in work (0.5 per worker). The typical income here, after tax and benefits, is €29,380 a year per consumption unit.
26%walk, cycle or take transit
How working residents got to work · census 2023
Driving69%
Public transport22%
On foot3%
Motorbike or scooter2%
Bicycle1%
2,150
jobs based in Méry-sur-Oise, 0.5 per working resident
8.7%
unemployment rate, ages 15 to 64 in the labor force · median of compared French towns 10.1%
€29,380
median annual income per consumption unit, 2023 · median of compared French towns €25,970
4%
worked without traveling (at or from home)
A
Walkability: better than 86% of compared French towns
Source: INSEE, census 2023 (commuting, employment, jobs at place of work); INSEE, Filosofi 2023 · Licence Ouverte
HousingCost of living D
Homes in Méry-sur-Oise sell for a median €3,400/m²
Rents are the ministry’s estimates of advertised rents, not rents actually paid.
Advertised rents are estimated at €17.78/m² a month, near Val-d'Oise’s towns (€18.09/m²) and higher than compared French towns (€12.41/m²). The split in Méry-sur-Oise: €3,568/m² for houses, €3,129/m² for apartments. For a house, the estimated advertised rent is €16.56/m² a month.
€3,400/m²median sale price
Median sale price per m² · Jul 2023 to Jun 2026
Méry-sur-Oise€3,400/m²
Median of towns€2,430/m²
Val-d'Oise median€3,266/m²
By type
Median per m²
Sales
Houses
€3,568/m²
165
Apartments
€3,129/m²
116
€17.78/m²
estimated advertised apartment rent a month, charges included (€15.08 to €20.96/m² a month)
7.6
times the median annual income per consumption unit in the intercommunality, for 70 m² at the median price
€16.56/m²
estimated advertised house rent a month, charges included
€31,450
median annual income per consumption unit, Communauté de communes de la Vallée de l'Oise et des Trois Forêts
Source: DGFiP, DVF property sales (Etalab geolocated); Housing Ministry, Carte des loyers 2025; INSEE, Filosofi 2023 · Licence Ouverte
History
2 historic monuments in Méry-sur-Oise, 1 classé
France has no History Grade yet: this card describes, it doesn’t grade.
Among the classé monuments in Méry-sur-Oise is Église Saint-Denis. The protected list starts in the 15th century. Homes from before 1919 make up 4.9% of the total, above Val-d'Oise’s towns (4.1%) but below compared French towns (7.4%).
Ministère de la Culture, Mérimée (Licence Ouverte 2.0) · INSEE, census 2023, homes by build period
Safety
Méry-sur-Oise ranks above 58% of compared French towns for crime per resident
Graded property crimes ran at 15.3 per 1,000 residents a year, and violence against people at 7.8 (2023–2025 average). Police and gendarmerie figures for Méry-sur-Oise show 218 offenses in 2025. Also worth knowing: the graded crime recorded most here was criminal damage (2025).
7.8recorded violent incidents per 1,000 residents a yearC+Safety Grade
Recorded by type · 2025
Criminal damage60
Vehicle theft35
Family violence29
Burglary28
Theft from vehicles27
Sexual violence20
Other physical violence19
Fraud68
Theft without violence36
Drug use30
Not in the gradeTheft without violence, drug use and fraud 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.
7.8
recorded violent incidents per 1,000 residents a year, 2023–2025 average
15.3
recorded burglaries, vehicle thefts, thefts from vehicles and acts of criminal damage per 1,000 residents a year, 2023–2025 average
218
offenses recorded in the graded categories in 2025
0.4%
of the index rests on the département’s average, used where small counts aren’t published
Source: SSMSI (Interior Ministry), recorded crime by commune, 2023–2025 · Licence Ouverte · For armed robbery, the count isn’t published when it’s small (five or fewer in a year of the last three), so the index uses the département’s average, 0.4% of the index here. The count covers the offense categories the Safety Grade uses.
HealthHealth B−
Méry-sur-Oise’s death rate, adjusted for age and care homes, is higher than in 50% of compared French towns
Care access and life expectancy are shown for context, not graded.
In Val-d'Oise, women can expect to live 85.9 years and men 81.1 (2025), against 85.9 and 80.3 across France. France’s death rates at each age would predict 499 deaths in Méry-sur-Oise from 2016 to 2025; there were 439, 12% fewer. This Val-d'Oise town has 4 family doctors.
−12%deaths against expected, after care homesB−Health Grade
Deaths per 100 expected · 2016–2025
Raw88
Adjusted88
Median town88
Expected100
4
GPs in Méry-sur-Oise · 3.5 GP consultations a year per resident within reach (APL)
3.7 mi
to the nearest emergency department, Hopital Novo site Pontoise
3.7 mi
to the nearest maternity unit, Hopital Novo site Pontoise
85.9 · 81.1
years of life expectancy at birth, women · men, Val-d'Oise, 2025 (provisional) · France 85.9 · 80.3
People: INSEE, census 2023. Miles: center to center.
Questions about Méry-sur-Oise
Is Méry-sur-Oise safe?
It grades C+ for safety, #30 of 73 in Val-d'Oise. In 2025 police and gendarmerie recorded 28 burglaries and 60 acts of criminal damage.
Are schools in Méry-sur-Oise good?
They grade D, better than 13% of compared French towns and #32 of 76 in Val-d'Oise. 92% of 197 candidates passed the bac at Lycée polyvalent Jean Perrin in 2025, 2 points below the expected rate given its pupils’ backgrounds. Primary schools aren’t graded: France doesn’t publish their results by school.
Is Méry-sur-Oise expensive to live in?
Incomes are higher than in most compared French towns, so Méry-sur-Oise grades D for cost of living.
About Méry-sur-Oise
Commune in Val-d'Oise, Île-de-France
Méry-sur-Oise is a commune of 9,983 people in the Communauté de communes de la Vallée de l'Oise et des Trois Forêts. TownRatings compares communes, France’s local unit: each has its own mayor and its own statistics. Its area takes in the town and the countryside around it.
Built from INSEE’s 2026 official geography (COG) and IGN Admin Express boundaries
Population
9,983 (INSEE, census 2023)
Intercommunality
Communauté de communes de la Vallée de l'Oise et des Trois Forêts
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.
