Boissy-sous-Saint-Yon
Boissy-sous-Saint-Yon has 3,855 residents and 1,702 homes, 78% of them houses. Homes sold for a median €3,190/m² over five years, 4% below the département figure. The median living standard is €27,770 a year. Around the town hall, 31 everyday shops and services are within a 15-minute walk.
Sources: IGN and Insee, IRIS boundaries and Admin Express 2024 (Open Licence 2.0) · © OpenStreetMap contributors (ODbL)
People.
3,855 residents and 1,593 households at the 2022 census, next to the département figure.
Source: Insee, 2022 population census (sub-municipal files, Open Licence 2.0)
Homes.
1,702 homes, 93% of them main residences, with 4.4 rooms on average.
When main homes were built
Source: Insee, 2022 population census (sub-municipal files, Open Licence 2.0)
Property prices.
236 house and flat sales over five years.
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 €27,770 a year in 2021.
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.
| Indicator | 2025 | Rate | Change |
|---|---|---|---|
| Burglaries of homes | 16 | 9.4 per 1,000 | +78% |
| Thefts from people without violence | 11 | 2.8 per 1,000 | −35% |
| Violent thefts without a weapon | 0 | 0.0 per 1,000 | – |
| Armed robberies | 0 | 0.0 per 1,000 | – |
| Domestic physical violence | 13 | 3.4 per 1,000 | +18% |
| Vehicle thefts | 9 | 2.3 per 1,000 | +13% |
| Thefts from vehicles | 5 | 1.3 per 1,000 | −38% |
| Thefts of vehicle parts | 15 | 3.9 per 1,000 | – |
| Deliberate damage and vandalism | 21 | 5.4 per 1,000 | +11% |
| Fraud and payment card fraud | 17 | 4.4 per 1,000 | −11% |
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. 5 public transport stops are within 800 m, and the nearest rail or tram station is 2.4 km away.
Source: © OpenStreetMap contributors (ODbL)
Health, shops and services.
Facilities and services in Boissy-sous-Saint-Yon on 1 January 2025, from Insee’s permanent database of facilities.
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 Boissy-sous-Saint-Yon, prevention plans in force and natural-disaster declarations since 1982.
Natural-disaster declarations by type
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.
3 primary and nursery schools, 0 collèges and 0 lycées are open here, 2 of them state schools.
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.