Each edition grades its towns against each other only.
6,332 people call this town in Yvelines, Île-de-France home.
Fewer journeys need a car: 99% of residents live within 800 m of a bakery, and 50% of working residents walk, cycle or take public transport to work. Overall, Le Mesnil-le-Roi earns a B+, better than 73% of compared French towns. It ranks #30 of 91 in Yvelines. Homes are dear: at the median price, a 70 m² home costs 10.7 times the median annual income per consumption unit in the intercommunality. Elsewhere it is close to typical: B for schools and B for health.
Figures: amenities, INSEE BPE 2025 · commuting and employment, INSEE census 2023 · prices, DVF · income per consumption unit (an income adjusted for household size), INSEE Filosofi · brevet and bac results, Ministry of Education · 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 Le Mesnil-le-Roi 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.
How TownRatings grades French towns →
The 2 things Le Mesnil-le-Roi does most differently from other towns.
On the Culture ministry’s list, Le Mesnil-le-Roi counts 3 historic monuments: 1 classé at the top level of protection and 2 inscrit at the second.
The oldest protected part dates from the 16th century; the first monument here was protected in 1948.
The list names few of Le Mesnil-le-Roi’s 3 monuments; beside them, the nearest classé monuments in other towns, within 15.5 mi.
Église Saint-Vincent: Photo: Chabe01 · CC BY-SA 4.0
Data highlights are ordered by what stands out in Le Mesnil-le-Roi.
Rents are the ministry’s estimates of advertised rents, not rents actually paid.
Houses in Le Mesnil-le-Roi sell for €6,494/m² and apartments for €4,233/m². Advertised rents are estimated at €19.75/m² a month, above both Yvelines’ towns (€18.40/m²) and compared French towns (€12.41/m²). Between July 2023 and June 2026, buyers took 157 homes in the town.
| By type | Median per m² | Sales |
|---|---|---|
| Houses | €6,494/m² | 88 |
| Apartments | €4,233/m² | 69 |
Source: DGFiP, DVF property sales (Etalab geolocated); Housing Ministry, Carte des loyers 2025; INSEE, Filosofi 2023 · Licence Ouverte
Half of residents lived on more than €39,890 a year per consumption unit, higher than both Yvelines’ towns (€32,600) and compared French towns (€25,970). 7.2% of people in the labour force have no job. Bus, tram or train carried 43.9% of working residents in Le Mesnil-le-Roi to work at the census.
Source: INSEE, census 2023 (commuting, employment, jobs at place of work); INSEE, Filosofi 2023 · Licence Ouverte
The yearly rates for 2023–2025: 3.9 violent offenses and 13.1 graded property crimes per 1,000 residents. Police and gendarmerie recorded 96 offenses in Le Mesnil-le-Roi in 2025. Among the graded crimes in the town, the most frequent was criminal damage (2025).
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.
Source: SSMSI (Interior Ministry), recorded crime by commune, 2023–2025 · Licence Ouverte · For sexual violence and 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, 3.5% of the index here. The count covers the offense categories the Safety Grade uses.
Care access and life expectancy are shown for context, not graded.
Life expectancy at birth in Yvelines is 86.8 years for women and 82.3 for men (2025), against 85.9 and 80.3 across France. 711 deaths in Le Mesnil-le-Roi between 2016 and 2025, where France’s rates at each age predict 636: 12% above. For a family doctor, residents of Le Mesnil-le-Roi can choose among 6 GPs.
Source: INSEE, deaths by commune of residence 2016–2025 and censuses; Eurostat, death rates by age (© European Union); INSEE, BPE 2025; DREES, APL 2024; INSEE, life expectancy by département 2025 · Licence Ouverte · The care-home step is TownRatings’ own calculation, not an official number.
France has no History Grade yet: this card describes, it doesn’t grade.
The protected list starts in the 16th century. On the Culture ministry’s list, Le Mesnil-le-Roi counts 3 historic monuments: 1 classé at the top level of protection and 2 inscrit at the second. Homes from before 1919 make up 8% of the total, higher than both Yvelines’ towns (5.2%) and compared French towns (7.4%).
Ministère de la Culture, Mérimée (Licence Ouverte 2.0) · INSEE, census 2023, homes by build period
Primary schools aren’t graded: France doesn’t publish their results by school.
Vocational results within 5 km: 87% passed the bac pro, of 448 candidates at 4 lycées. At the lycées within 5 km of Le Mesnil-le-Roi, 96.4% passed the bac, above both Yvelines’ towns (93.9%) and compared French towns (92.9%). On results, collèges and lycées here come #15 of 94 in Yvelines.
| School | Level | Candidates | Passed, 2025 |
|---|---|---|---|
| Collège Jean CocteauNearest collègeCollège | Collège | 140 | 91%−5 pts |
| Lycée l'Ermitage PrivateNearest lycéeGeneral lycée | General lycée | 92 | 100%±0 pts |
| Lycée Jean-Baptiste PoquelinBest against expectations: 7 points above the expected rateVocational lycée | Vocational lycée | 114 | 93%+7 pts |
Ministry of Education (DEPP) · brevet and bac 2025, value added (IVAC, IVAL) · Licence Ouverte
The under-15s are 18% of the population here. 13% of residents are 15 to 24, above Yvelines’ towns (12%) and compared French towns (11%) alike. People 65 and over make up a fifth of the town.
52% women, 48% men
About 94 men for every 100 women. Median share of women: Yvelines 51.6%, France 51.8%.
| Le Mesnil-le-Roi | Yvelines median | France median | |
|---|---|---|---|
| Under 15 | 18% | 20% | 17% |
| 15–24 | 13% | 12% | 11% |
| 25–44 | 19% | 25% | 23% |
| 45–64 | 30% | 26% | 26% |
| 65+ | 20% | 17% | 22% |
| No diploma | 13% | 13% | 19% |
| CAP or BEP | 13% | 16% | 26% |
| Baccalauréat | 13% | 16% | 18% |
| Higher education | 58% | 49% | 30% |
INSEE, census 2023 · Yvelines median and France median: the median of compared communes
Museums, heritage and gardens in and near Le Mesnil-le-Roi. Best known first.
ChâteauChâteau de Maisons2.5 km northeast, in Maisons-Laffitte
MuseumMusée d'Archéologie nationale4.6 km southwest, in Saint-Germain-en-Laye
MuseumMaison Claude Debussy4.8 km southwest, in Saint-Germain-en-Laye
ChâteauChâteau du Val2 km southwest, in Saint-Germain-en-LayeGardenGardenJardins de Mademoiselle de La Vallière4.9 km southeast, in Carrières-sur-SeinePhotos from Wikimedia Commons, each under its own licence (our copy, resized).
Wikidata has nobody with a French article born in Le Mesnil-le-Roi yet.
Commune in Yvelines, Île-de-France
Le Mesnil-le-Roi is a commune of 6,332 people in the Communauté d'agglomération Saint Germain Boucles de Seine. 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
The nearest towns of 2,500 or more. The map uses IGN’s commune boundaries. See them on the map →
| Town | People | Miles | Overall | Cost | Safety | Health |
|---|---|---|---|---|---|---|
| Le Mesnil-le-Roi | 6,332 | — | B+ | D | B+ | B |
| Maisons-Laffitte | 23,093 | 1.4 | B+ | D− | B | A− |
| Montesson | 14,549 | 1.7 | A− | D | B | A |
| Sartrouville | 52,763 | 2.4 | C | D | B− | B+ |
| Le Vésinet | 15,554 | 2.9 | B | D− | C | A+ |
| Houilles | 33,983 | 2.9 | C+ | D | B− | A− |
| Chatou | 30,598 | 2.9 | A− | D− | B+ | A |
People: INSEE, census 2023. Miles: center to center.
It grades B+ for safety, #21 of 91 in Yvelines. In 2025 police and gendarmerie recorded 18 burglaries and 25 acts of criminal damage.
They grade B, better than 59% of compared French towns and #15 of 94 in Yvelines. 100% of 92 candidates passed the bac at Lycée l'Ermitage in 2025, at the expected rate given its pupils’ backgrounds. Primary schools aren’t graded: France doesn’t publish their results by school.
Incomes are higher than in most compared French towns, so Le Mesnil-le-Roi grades D for cost of living.
Sources: INSEE, census 2023 (population, employment, commuting) · INSEE, Filosofi 2023 (income per consumption unit, poverty) · DGFiP, DVF property sales, July 2023 to June 2026 · Housing Ministry, Carte des loyers 2025 · SSMSI, recorded crime by commune, 2023–2025 · Ministry of Education (DEPP), brevet and bac results and value-added indicators, 2025 · INSEE, deaths by commune of residence 2016–2025 and censuses 2012–2023; Eurostat, death rates by age (© European Union); INSEE, BPE 2025 (care homes, emergency and maternity units, GPs, pharmacies); DREES, APL 2024; INSEE, life expectancy by département 2025 (provisional) · INSEE, BPE 2025 and Filosofi 200 m grid (walking distances) · 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.