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Conflans-Sainte-Honorine

Conflans-Sainte-Honorine has 36,306 residents and 15,805 homes, 52% of them houses. Homes sold for a median €3,980/m² over five years, close to the département figure. The median living standard is €27,320 a year. For the average resident, 121 everyday shops and services are within a 15-minute walk.

Commune · Insee 78172 · Postcode 78700 · Updated 24 October 2026
36,306residents2022 census
€3,980/m²median price per m²Yvelines : €4,010/m²
7%green space within 500 mneighbourhood average
121services within a 15-minute walkneighbourhood average
Conflans-Sainte-Honorine · 15 IRIS neighbourhoods
Map of Conflans-Sainte-Honorine: 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 15 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
Fin d'Oise1,981€30,76066%14%9%8.5%10%100
Gallieni1,842€25,83051%37%8%10.6%21%81
Boutries2,069€23,76052%22%4%12.7%2%75
Les Roches2,219€27,45068%18%7%6.7%23%119
Basses Roches2,031€31,63091%4%10%5.3%1%155
Grandes Terres2,151€30,33093%1%12%7.8%22%91
Chennevières2,967€28,21076%6%10%6.9%0%82
Renouveau1,899€26,71063%14%6%5.8%2%139
Centre Ville2,703€25,45042%13%9%10.3%23%141
Montaigne2,176€31,69074%8%8%6.7%6%147
Plateau Carno2,054€27,33060%18%7%10.8%2%174
Romagne5,454€24,15036%41%6%12.2%2%160
Plateau du Moulin1,848€30,90083%3%17%6.9%4%71
Champ du Four2,868€24,01050%38%7%11.1%2%127
Culs Baillets2,045€23,71052%36%6%11.1%1%88

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.

36,306 residents and 14,693 households at the 2022 census, next to the département figure.

20%
aged under 15
17%
aged 15–29
22%
aged 60 and over
31%
of households are people living alone
33%
of households are couples with children
12%
of households are single-parent families

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

Homes.

15,805 homes, 93% of them main residences, with 3.9 rooms on average.

52%
of homes are houses
61%
of households own their home
20%
of households rent social housing (HLM)
1%
second homes
6%
empty homes
83%
of households have a car

When main homes were built

before 19194%
1919–194510%
1946–197032%
1971–199027%
1991–200512%
2006–201916%

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

Property prices.

2,406 house and flat sales over five years.

€3,980/m²median price, houses and flatsYvelines : €4,010/m²
€3,440/m²flats1,116 sales
€4,400/m²houses1,290 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 €27,320 a year in 2021.

€27,320median living standard a year2021
11.0%poverty ratethreshold: 60% of national median
€13,400the lowest-income 10% live on less than1st decile
€45,010the highest-income 10% live on more than9th decile
9.2%
unemployment among 15–64s (census definition)
43%
of over-15s who have left school hold a higher-education degree
19%
managers and professionals among over-15s
22%
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 homes1217.7 per 1,000−19%
Thefts from people without violence2546.9 per 1,000−18%
Violent thefts without a weapon260.7 per 1,000−7%
Physical violence outside the family942.5 per 1,000−24%
Domestic physical violence1544.2 per 1,000−10%
Sexual violence551.5 per 1,000−19%
Vehicle thefts872.4 per 1,000−26%
Thefts from vehicles1223.3 per 1,000+4%
Thefts of vehicle parts1052.8 per 1,000+19%
Deliberate damage and vandalism2536.9 per 1,000+10%
Fraud and payment card fraud2476.7 per 1,000+16%

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 910 m away.

Supermarkets and convenience shops9
Bakeries6
Pharmacies3
Doctors3
Dentists2
Cafés and bars7
Restaurants28
Parks and gardens5
Playgrounds6
Sports pitches19
Gyms and sports halls6
Libraries1
Nurseries and childcare4
Bus stops31
Tram and metro stops0
Railway stations1

Source: © OpenStreetMap contributors (ODbL)

Health, shops and services.

Facilities and services in Conflans-Sainte-Honorine on 1 January 2025, from Insee’s permanent database of facilities.

5.8GPs per 10,000 residentsdépartement: 6.5
8pharmacieson 1 January 2025
27food storessupermarkets, convenience stores, grocers
General practitioners21
Dentists26
Nurses26
Physiotherapists28
Pharmacies8
Group health centres1
Supermarkets and hypermarkets7
Convenience stores and grocers20
Bakeries19
Butchers9
Petrol stations6
EV charging stations11
Post offices and postal points2
Banks12
Police and gendarmerie1
Restaurants116
Hairdressers37
Nurseries11
Swimming pools1
Sports halls5
Gyms2
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 Conflans-Sainte-Honorine, prevention plans in force and natural-disaster declarations since 1982.

Floodingprevention plan
Ground movementcollapse of old quarries, rockfallsprevention plan
Industrial hazard
Transport of hazardous goods
18natural-disaster declarationssince 1983
October 2024latest recognised eventFloods and mudflows

Natural-disaster declarations by type

Floods and mudflows11
Ground movement6
Drought (clay shrinkage)1

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.

18 primary and nursery schools, 5 collèges and 2 lycées are open here, 22 of them state schools.

Collège Les Hautes RayesLower secondary (collège) · state
Collège MontaigneLower secondary (collège) · state
Collège Samuel PatyLower secondary (collège) · state
Ecole secondaire privée EMI des enfantsLower secondary (collège) · private
Section d'enseignement général et professionnel adapté du Collège MontaigneLower secondary (collège) · state
Ecole maternelle Croix BlancheNursery school · state
Ecole maternelle Grandes TerresNursery school · state
Ecole maternelle Le Long CheminNursery school · state
Ecole maternelle Les Basses RochesNursery school · state
Ecole maternelle Les Trois SapinsNursery school · state
Ecole maternelle Plateau du MoulinNursery school · state
Ecole maternelle Quatre VentsNursery school · state
Ecole maternelle du ConfluentNursery school · state
Ecole primaire privée Saint JosephPrimary school · private
Ecole primaire privée, Ecole des enfants, Ecole Montessori InternationnalePrimary school · private
Ecole régionale du premier degréSchool · state
Ecole élémentaire ChennevieresPrimary school · state
Ecole élémentaire Clos d'en hautPrimary school · state
Ecole élémentaire Cotes ReversesPrimary school · state
Ecole élémentaire Gaston RoussetPrimary school · state
Ecole élémentaire Grandes TerresPrimary school · state
Ecole élémentaire Henri DunantPrimary school · state
Ecole élémentaire Paul BertPrimary school · state
Lycée Jules FerryUpper secondary (lycée) · state
Lycée Simone WeilUpper secondary (lycée) · state

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

Around here.

Photographs taken near Conflans-Sainte-Honorine, shared on Wikimedia Commons under free licences.

Conflans-ste-honorine-eglise-saint-maclou
i
Conflans-ste-honorine-eglise-saint-maclou
Photo: Nitot · CC BY-SA 3.0
View on Wikimedia Commons
Conflans-ste-honorine-mairie
i
Conflans-ste-honorine-mairie
Photo: Nitot · CC BY-SA 3.0
View on Wikimedia Commons
Conflans-ste-honorine-musee-batellerie
i
Conflans-ste-honorine-musee-batellerie
Photo: Nitot · CC BY-SA 3.0
View on Wikimedia Commons

Nearby communes.

The communes in the département whose town halls are closest.