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Montfort-l'Amaury

Montfort-l'Amaury has 2,790 residents and 1,330 homes, 66% of them houses. Homes sold for a median €4,420/m² over five years, 10% above the département figure. The median living standard is €34,200 a year. Around the town hall, 70 everyday shops and services are within a 15-minute walk.

Commune · Insee 78420 · Postcode 78490 · Updated 24 October 2026
2,790residents2022 census
€4,420/m²median price per m²Yvelines : €4,010/m²
25%green space within 500 maround the town hall
70services within a 15-minute walkaround the town hall
Montfort-l'Amaury in YvelinesMontfort-l'Amaury highlighted; the rest of the département in grey
Map of Yvelines with Montfort-l'Amaury highlighted

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

People.

2,790 residents and 1,179 households at the 2022 census, next to the département figure.

13%
aged under 15
14%
aged 15–29
38%
aged 60 and over
35%
of households are people living alone
24%
of households are couples with children
9%
of households are single-parent families

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

Homes.

1,330 homes, 89% of them main residences, with 4.6 rooms on average.

66%
of homes are houses
68%
of households own their home
5%
of households rent social housing (HLM)
4%
second homes
7%
empty homes
93%
of households have a car

When main homes were built

before 191923%
1919–19457%
1946–197019%
1971–199025%
1991–200519%
2006–20198%

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

Property prices.

198 house and flat sales over five years.

€4,420/m²median price, houses and flatsYvelines : €4,010/m²
€4,390/m²flats67 sales
€4,430/m²houses131 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 €34,200 a year in 2021.

€34,200median living standard a year2021
€16,040the lowest-income 10% live on less than1st decile
€69,000the highest-income 10% live on more than9th decile
7.5%
unemployment among 15–64s (census definition)
44%
of over-15s who have left school hold a higher-education degree
17%
managers and professionals among over-15s
41%
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 homes86.0 per 1,000−43%
Thefts from people without violence145.0 per 1,000−33%
Violent thefts without a weapon00.0 per 1,000–
Armed robberies00.0 per 1,000–
Domestic physical violence72.5 per 1,000−13%
Sexual violence51.8 per 1,000–
Deliberate damage and vandalism155.4 per 1,000−35%
Fraud and payment card fraud227.9 per 1,000+22%

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. 20 public transport stops are within 800 m, and the nearest rail or tram station is 2.8 km away.

Supermarkets and convenience shops4
Bakeries2
Pharmacies1
Doctors4
Dentists3
Cafés and bars2
Restaurants8
Parks and gardens1
Playgrounds1
Sports pitches24
Gyms and sports halls1
Libraries1
Nurseries and childcare0
Bus stops23
Tram and metro stops0
Railway stations0

Source: © OpenStreetMap contributors (ODbL)

Health, shops and services.

Facilities and services in Montfort-l'Amaury on 1 January 2025, from Insee’s permanent database of facilities.

21.5GPs per 10,000 residentsdépartement: 6.5
1pharmacieson 1 January 2025
4food storessupermarkets, convenience stores, grocers
General practitioners6
Dentists7
Nurses2
Physiotherapists4
Pharmacies1
Supermarkets and hypermarkets1
Convenience stores and grocers3
Bakeries6
Butchers1
EV charging stations1
Post offices and postal points1
Banks6
France services centres1
Police and gendarmerie1
Restaurants12
Hairdressers4
Nurseries1
Swimming pools1
Sports halls1
Libraries1

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 Montfort-l'Amaury, prevention plans in force and natural-disaster declarations since 1982.

Floodingprevention plan
Transport of hazardous goods
11natural-disaster declarationssince 1983
July 2022latest recognised eventDrought (clay shrinkage)

Natural-disaster declarations by type

Floods and mudflows5
Drought (clay shrinkage)5
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.

2 primary and nursery schools, 3 collèges and 0 lycées are open here, 3 of them state schools.

Collège Maurice RavelLower secondary (collège) · state
Collège Saint-Louis Notre-Dame du Bel AirLower secondary (collège) · private
Section d'enseignement général et professionnel adapté du Collège Maurice RavelLower secondary (collège) · state
Ecole primairePrimary school · state
Ecole élémentaire privée Saint Louis Notre-Dame du Bel AirPrimary school · private

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.