FR · EN

Les Clayes-sous-Bois

Les Clayes-sous-Bois has 16,940 residents and 7,645 homes, 42% of them houses. Homes sold for a median €3,500/m² over five years, 13% below the département figure. The median living standard is €26,060 a year. For the average resident, 100 everyday shops and services are within a 15-minute walk.

Commune · Insee 78165 · Postcode 78340 · Updated 24 October 2026
16,940residents2022 census
€3,500/m²median price per m²Yvelines : €4,010/m²
23%green space within 500 mneighbourhood average
100services within a 15-minute walkneighbourhood average
Les Clayes-sous-Bois · 6 IRIS neighbourhoods
Map of Les Clayes-sous-Bois: Share of land within 500 m that is green space
0%30%+
Share of land within 500 m that is green space

Sources: IGN and Insee, IRIS boundaries and Admin Express 2024 (Open Licence 2.0) · © OpenStreetMap contributors (ODbL) · Insee, Filosofi 2021 income data (Open Licence 2.0)

All 6 IRIS neighbourhoods.

IRIS are Insee’s statistical neighbourhoods of about 2,000 people each. Colour shows where each one sits among the others.

NeighbourhoodResidentsLiving standardHome ownersSocial housingAged 75+UnemploymentGreen 500 mServices 15 min
Quartier Val Joyeux3,296€32,40079%1%13%4.8%100%39
Quartier Nord3,155€25,09069%21%8%9.5%1%133
Quartier Centre 12,209€22,09050%36%6%13.1%0%138
Quartier Centre 22,406€26,38067%8%12%6.8%1%132
Quartier Ouest Nord3,324€21,80060%31%7%9.5%1%91
Quartier Ouest Sud2,550€28,00054%43%5%10.5%21%87

Sources: Insee, 2022 population census (sub-municipal files, Open Licence 2.0) · Insee, Filosofi 2021 income data (Open Licence 2.0) · © OpenStreetMap contributors (ODbL)

People.

16,940 residents and 7,199 households at the 2022 census, next to the département figure.

19%
aged under 15
17%
aged 15–29
24%
aged 60 and over
32%
of households are people living alone
31%
of households are couples with children
11%
of households are single-parent families

Source: Insee, 2022 population census (sub-municipal files, Open Licence 2.0)

Homes.

7,645 homes, 94% of them main residences, with 4.0 rooms on average.

42%
of homes are houses
64%
of households own their home
22%
of households rent social housing (HLM)
2%
second homes
4%
empty homes
85%
of households have a car

When main homes were built

before 19192%
1919–19453%
1946–197036%
1971–199041%
1991–20059%
2006–201910%

Source: Insee, 2022 population census (sub-municipal files, Open Licence 2.0)

Property prices.

1,130 house and flat sales over five years.

€3,500/m²median price, houses and flatsYvelines : €4,010/m²
€3,040/m²flats723 sales
€4,070/m²houses407 sales

Median prices from sales published in France’s Demandes de valeurs foncières (DVF) over ten half-years, for sales of a single property. Individual sales are not shown. A median is only given where there were at least ten sales.

Source: DGFiP property sales (DVF), data.gouv.fr statistics (Open Licence 2.0)

Income and work.

Median living standard of €26,060 a year in 2021.

€26,060median living standard a year2021
11.0%poverty ratethreshold: 60% of national median
€13,600the lowest-income 10% live on less than1st decile
€43,170the highest-income 10% live on more than9th decile
8.8%
unemployment among 15–64s (census definition)
38%
of over-15s who have left school hold a higher-education degree
15%
managers and professionals among over-15s
25%
retired among over-15s

Living standard is a household’s disposable income after taxes and benefits, divided by its consumption units. Half of residents live on less than the median. Income on its own says nothing about what a neighbourhood is like to live in.

Sources: Insee, Filosofi 2021 income data (Open Licence 2.0) · Insee, 2022 population census (sub-municipal files, Open Licence 2.0)

Safety.

Offences recorded in 2025, with the rate per 1,000 residents and the change from 2024.

Indicator2025RateChange
Burglaries of homes293.8 per 1,000−36%
Thefts from people without violence1066.3 per 1,000+16%
Physical violence outside the family462.7 per 1,000+21%
Domestic physical violence653.9 per 1,000+44%
Sexual violence201.2 per 1,000−17%
Vehicle thefts161.0 per 1,000−59%
Thefts from vehicles201.2 per 1,000−41%
Thefts of vehicle parts281.7 per 1,000−49%
Deliberate damage and vandalism1317.8 per 1,000+26%
Fraud and payment card fraud1036.1 per 1,000−21%

These figures count offences recorded by the police and gendarmerie, not how safe a place feels, and not every offence is reported. Rates are per 1,000 residents (per 1,000 homes for burglaries): where many people visit but few live, as in town centres and shopping areas, they are naturally higher. Small counts are not published.

Source: Ministry of the Interior (SSMSI), recorded crime by municipality 2024–2025 (Open Licence 2.0)

Everyday life.

What is within one kilometre of the town hall. For the average resident, 28 public transport stops are within 800 m, and the nearest rail or tram station is 920 m away.

Supermarkets and convenience shops4
Bakeries5
Pharmacies5
Doctors0
Dentists1
Cafés and bars1
Restaurants10
Parks and gardens7
Playgrounds12
Sports pitches11
Gyms and sports halls6
Libraries1
Nurseries and childcare0
Bus stops49
Tram and metro stops0
Railway stations1

Source: © OpenStreetMap contributors (ODbL)

Health, shops and services.

Facilities and services in Les Clayes-sous-Bois on 1 January 2025, from Insee’s permanent database of facilities.

4.1GPs per 10,000 residentsdépartement: 6.5
5pharmacieson 1 January 2025
9food storessupermarkets, convenience stores, grocers
General practitioners7
Dentists12
Nurses10
Physiotherapists3
Pharmacies5
Group health centres1
Supermarkets and hypermarkets3
Convenience stores and grocers6
Bakeries14
Butchers4
Petrol stations2
EV charging stations4
Post offices and postal points1
Banks6
Restaurants54
Hairdressers23
Nurseries5
Swimming pools1
Sports halls3
Gyms3
Cinemas1
Libraries1
Performance venues1

Insee’s permanent database of facilities lists the shops, services and health professionals present in each commune on 1 January. Health professionals in private practice are counted one by one; several may work at the same address.

Source: Insee, permanent database of facilities 2025 (Open Licence 2.0)

Natural and industrial hazards.

Major hazards the State lists for Les Clayes-sous-Bois, prevention plans in force and natural-disaster declarations since 1982.

Ground movementprevention plan
13natural-disaster declarationssince 1989
July 2020latest recognised eventDrought (clay shrinkage)

Natural-disaster declarations by type

Drought (clay shrinkage)9
Floods and mudflows3
Ground movement1

A natural-disaster declaration (arrêté CatNat) lets insurers pay out for the damage. The count reflects past events, not a forecast of future risk. The list of hazards comes from each département’s major-risk file; a prevention plan in force limits building in exposed zones.

Source: Géorisques, GASPAR database (Open Licence 2.0), as of 5 October 2026

Schools.

12 primary and nursery schools, 2 collèges and 0 lycées are open here, 14 of them state schools.

Collège Anatole FranceLower secondary (collège) · state
Collège La Fosse aux DamesLower secondary (collège) · state
Ecole maternelle André BriquetNursery school · state
Ecole maternelle Chêne SorcierNursery school · state
Ecole maternelle Henri ProuNursery school · state
Ecole maternelle La BretechelleNursery school · state
Ecole maternelle Madame René CotyNursery school · state
Ecole maternelle Paul LangevinNursery school · state
Ecole élémentaire Henri ProuPrimary school · state
Ecole élémentaire Jean JaurèsPrimary school · state
Ecole élémentaire Madame René CotyPrimary school · state
Ecole élémentaire Marcel PagnolPrimary school · state
Ecole élémentaire Paul EluardPrimary school · state
Ecole élémentaire Victor HugoPrimary school · state

Source: Ministry of Education, school directory (Open Licence 2.0). Admission depends on catchment rules and each school’s own policy.

Nearby communes.

The communes in the département whose town halls are closest.