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Thiverval-Grignon

Thiverval-Grignon has 1,102 residents and 405 homes, 75% of them houses. Homes sold for a median €4,170/m² over five years, 4% above the département figure. The median living standard is €29,850 a year. Around the town hall, 16 everyday shops and services are within a 15-minute walk.

Commune · Insee 78615 · Postcode 78850 · Updated 24 October 2026
1,102residents2022 census
€4,170/m²median price per m²Yvelines : €4,010/m²
35%green space within 500 maround the town hall
16services within a 15-minute walkaround the town hall
Thiverval-Grignon in YvelinesThiverval-Grignon highlighted; the rest of the département in grey
Map of Yvelines with Thiverval-Grignon highlighted

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

People.

1,102 residents and 362 households at the 2022 census, next to the département figure.

17%
aged under 15
31%
aged 15–29
18%
aged 60 and over
29%
of households are people living alone
32%
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.

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

75%
of homes are houses
78%
of households own their home
0%
of households rent social housing (HLM)
8%
second homes
3%
empty homes
97%
of households have a car

When main homes were built

before 191920%
1919–19457%
1946–19706%
1971–199018%
1991–200511%
2006–201939%

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

Property prices.

48 house and flat sales over five years.

€4,170/m²median price, houses and flatsYvelines : €4,010/m²
€4,120/m²flats14 sales
€4,370/m²houses34 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 €29,850 a year in 2021.

€29,850median living standard a year2021
3.7%
unemployment among 15–64s (census definition)
55%
of over-15s who have left school hold a higher-education degree
17%
managers and professionals among over-15s
15%
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
Fraud and payment card fraud54.9 per 1,000−50%

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. 2 public transport stops are within 800 m, and the nearest rail or tram station is 2.7 km away.

Supermarkets and convenience shops0
Bakeries0
Pharmacies0
Doctors0
Dentists0
Cafés and bars0
Restaurants0
Parks and gardens0
Playgrounds2
Sports pitches2
Gyms and sports halls0
Libraries0
Nurseries and childcare0
Bus stops2
Tram and metro stops0
Railway stations0

Source: © OpenStreetMap contributors (ODbL)

Health, shops and services.

Facilities and services in Thiverval-Grignon on 1 January 2025, from Insee’s permanent database of facilities.

0.0GPs per 10,000 residentsdépartement: 6.5
0pharmacieson 1 January 2025
1food storessupermarkets, convenience stores, grocers
Dentists5
Nurses2
Convenience stores and grocers1
EV charging stations3
Post offices and postal points1
Restaurants1
Hairdressers1
Nurseries1
Swimming pools1
Gyms1

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 Thiverval-Grignon, prevention plans in force and natural-disaster declarations since 1982.

Floodingprevention plan
Ground movementprevention plan
Transport of hazardous goods
2natural-disaster declarationssince 1999
December 1999latest recognised eventGround movement

Natural-disaster declarations by type

Floods and mudflows1
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, 0 collèges and 0 lycées are open here, 2 of them state schools.

Ecole maternelleNursery school · state
Ecole primairePrimary 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.