Le Port-Marly’s overall B+ puts it #35 of 91 in Yvelines. On that grade it does better than 69% of compared French towns. Its standout strength is health — after allowing for care homes, deaths from 2016 to 2025 were 36% below expected, against 12% below for the median of compared French towns. Fewer journeys need a car: 100% of residents live within 800 m of a bakery, and 41% of working residents walk, cycle or take public transport to work. What holds it back is cost of living — at the median price, a 70 m² home costs 9.1 times the median annual income per consumption unit in the intercommunality. The rest of its grades are middling: C+ for safety and B for jobs & income.
Figures: deaths, INSEE (by commune of residence, 2016–2025) · amenities, INSEE BPE 2025 · commuting and employment, INSEE census 2023 · prices, DVF · income per consumption unit (an income adjusted for household size), INSEE Filosofi · recorded crime, SSMSI (Ministry of the Interior).
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 Port-Marly 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.
Église Saint-Louis: Photo: ℍenry Salomé · CC BY-SA 3.0 · Château de Monte-Cristo: Photo: JPGO · CC BY-SA 3.0
The data
Data highlights are ordered by what stands out in Le Port-Marly.
Work & commuteJobs & income B
Getting about on foot is easier in Le Port-Marly than in 98% of compared French towns
41%walk, cycle or take transit
Half of residents lived on more than €30,270 a year per consumption unit, between Yvelines’ towns (€32,600) and compared French towns (€25,970). Le Port-Marly has 1,600 jobs for 2,700 working residents, 0.6 per worker. Of those in the labour force, 11.8% are unemployed.
How working residents got to work · census 2023
Driving52%
Public transport36%
On foot4%
Motorbike or scooter4%
Bicycle1%
1,600
jobs based in Le Port-Marly, 0.6 per working resident
11.8%
unemployment rate, ages 15 to 64 in the labor force · median of compared French towns 10.1%
€30,270
median annual income per consumption unit, 2023 · median of compared French towns €25,970
3%
worked without traveling (at or from home)
A+
Walkability: better than 98% of compared French towns
Source: INSEE, census 2023 (commuting, employment, jobs at place of work); INSEE, Filosofi 2023 · Licence Ouverte
HealthHealth A+
Mortality in Le Port-Marly, once ages and care homes are allowed for, undercuts Yvelines’ towns and compared French towns: 64 per 100 expected
−36%deaths against expected, after care homesA+Health Grade
Care access and life expectancy are shown for context, not graded.
From 2016 to 2025, 367 residents of Le Port-Marly died, against 402 expected from France’s death rates at each age: 9% fewer. In Yvelines, life expectancy at birth reaches 86.8 years for women and 82.3 for men (2025), next to 85.9 and 80.3 for France. 10 GPs practise in the town.
Deaths per 100 expected · 2016–2025
Raw91
Adjusted64
Median town88
Expected100
10
GPs in Le Port-Marly · 3 GP consultations a year per resident within reach (APL)
0.2 mi
to the nearest emergency department, Centre hospitalier Prive de L Europe
0.9 mi
to the nearest maternity unit, Clinique Saint Germain
86.8 · 82.3
years of life expectancy at birth, women · men, Yvelines, 2025 (provisional) · France 85.9 · 80.3
Renting in Le Port-Marly costs more than in Yvelines’ towns or compared French towns, at an estimated advertised €20.19/m² a month
€4,535/m²median sale price
Rents are the ministry’s estimates of advertised rents, not rents actually paid.
Homes sold for a median €4,535/m², above Yvelines’ towns (€3,717/m²) and compared French towns (€2,430/m²) alike. Of the homes sold, 10% were houses. Sales in Le Port-Marly from July 2023 to June 2026: 162 houses and apartments.
Median sale price per m² · Jul 2023 to Jun 2026
Le Port-Marly€4,535/m²
Median of towns€2,430/m²
Yvelines median€3,717/m²
By type
Median per m²
Sales
Apartments
€4,410/m²
146
€20.19/m²
estimated advertised apartment rent a month, charges included (€16.47 to €24.74/m² a month)
9.1
times the median annual income per consumption unit in the intercommunality, for 70 m² at the median price
€22.99/m²
estimated advertised house rent a month, charges included
€34,890
median annual income per consumption unit, Communauté d'agglomération Saint Germain Boucles de Seine
Source: DGFiP, DVF property sales (Etalab geolocated); Housing Ministry, Carte des loyers 2025; INSEE, Filosofi 2023 · Licence Ouverte
Who lives here
Le Port-Marly has fewer older residents than Yvelines’ towns or compared French towns: 15% are 65 or over
37.4median age
13% of residents are 15 to 24, above Yvelines’ towns (12%) and compared French towns (11%) alike. The under-15s are 18% of the population here. Degrees are held by just over half of adults.
Le Port-MarlyYvelines medianFrance median
Ages · share of residents
13%
Under 1515–2425–4445–6465+
Highest diploma · residents 15 and older who have left education
No diploma15%
CAP or BEP15%
Baccalauréat16%
Higher education51%
Women and men · all residents
50% women, 50% men
WomenFrance medianMen
About an even split. Median share of women: Yvelines 51.6%, France 51.8%.
Ministry of Education (DEPP) · brevet and bac 2025, value added (IVAC, IVAL) · Licence Ouverte
History
Le Port-Marly: 3 historic monuments, 3 classé
3historic monuments
France has no History Grade yet: this card describes, it doesn’t grade.
Among the classé monuments in Le Port-Marly is Château des Lions (ancien). Its oldest listed monument dates from the 17th century. 2 of the 3 are houses and mansions. Also worth knowing: homes built before 1919 account for 2.4% of the housing.
Ministère de la Culture, Mérimée (Licence Ouverte 2.0) · INSEE, census 2023, homes by build period
Safety
More crime per resident in Le Port-Marly than in 58% of compared French towns
10.3recorded violent incidents per 1,000 residents a yearC+Safety Grade
Violence against people averaged 10.3 per 1,000 residents a year over 2023–2025; graded property crimes averaged 12.8. All told, Le Port-Marly had 132 recorded offenses in 2025. Of the graded crimes in the town, criminal damage came up most often (2025).
Recorded by type · 2025
Criminal damage47
Family violence40
Sexual violence16
Other physical violence11
Burglary11
Vehicle theft7
Fraud37
Theft without violence36
Drug use11
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.
10.3
recorded violent incidents per 1,000 residents a year, 2023–2025 average
12.8
recorded burglaries, vehicle thefts, thefts from vehicles and acts of criminal damage per 1,000 residents a year, 2023–2025 average
132
offenses recorded in the graded categories in 2025
2.5%
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 · Small counts of armed robbery and theft from vehicles go unpublished (five or fewer in at least one of the last three years); the département’s average stands in, 2.5% of the index here. The count covers the offense categories the Safety Grade uses.
Le Port-Marly is a commune of 5,559 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
Population
5,559 (INSEE, census 2023)
Intercommunality
Communauté d'agglomération Saint Germain Boucles de Seine
Département
Yvelines (78)
Région
Île-de-France
Area
0.6 sq mi (1.4 km²)
INSEE code
78502
Le Port-Marly’s neighbors
The nearest towns of 2,500 or more. The map uses IGN’s commune boundaries. See them on the map →
People: INSEE, census 2023. Miles: center to center.
Questions about Le Port-Marly
Is Le Port-Marly safe?
It grades C+ for safety, #71 of 91 in Yvelines. In 2025 police and gendarmerie recorded 11 burglaries and 47 acts of criminal damage.
Are schools in Le Port-Marly good?
They grade B+, better than 66% of compared French towns and #7 of 94 in Yvelines. 99% of 300 candidates passed the bac at Lycée Louis de Broglie in 2025, at the expected rate given its pupils’ backgrounds. Primary schools aren’t graded: France doesn’t publish their results by school.
Is Le Port-Marly expensive to live in?
Incomes are higher than in most compared French towns, so Le Port-Marly grades D for cost of living.
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.
