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Issou

Issou has 3,858 residents and 1,663 homes, 82% of them houses. Homes sold for a median €2,810/m² over five years, 30% below the département figure. The median living standard is €25,020 a year. Around the town hall, 27 everyday shops and services are within a 15-minute walk.

Commune · Insee 78314 · Postcode 78440 · Updated 24 October 2026
3,858residents2022 census
€2,810/m²median price per m²Yvelines : €4,010/m²
27%green space within 500 maround the town hall
27services within a 15-minute walkaround the town hall
Issou in YvelinesIssou highlighted; the rest of the département in grey
Map of Yvelines with Issou highlighted

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

People.

3,858 residents and 1,576 households at the 2022 census, next to the département figure.

18%
aged under 15
18%
aged 15–29
22%
aged 60 and over
32%
of households are people living alone
36%
of households are couples with children
8%
of households are single-parent families

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

Homes.

1,663 homes, 95% of them main residences, with 4.5 rooms on average.

82%
of homes are houses
82%
of households own their home
8%
of households rent social housing (HLM)
1%
second homes
5%
empty homes
94%
of households have a car

When main homes were built

before 19195%
1919–19454%
1946–197012%
1971–199036%
1991–200537%
2006–20197%

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

Property prices.

211 house and flat sales over five years.

€2,810/m²median price, houses and flatsYvelines : €4,010/m²
€2,370/m²flats31 sales
€2,910/m²houses180 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 €25,020 a year in 2021.

€25,020median living standard a year2021
8.0%poverty ratethreshold: 60% of national median
€14,880the lowest-income 10% live on less than1st decile
€37,270the highest-income 10% live on more than9th decile
7.9%
unemployment among 15–64s (census definition)
26%
of over-15s who have left school hold a higher-education degree
10%
managers and professionals among over-15s
24%
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
Thefts from people without violence51.2 per 1,000−44%
Physical violence outside the family82.0 per 1,000+14%
Domestic physical violence153.7 per 1,000+36%
Thefts of vehicle parts71.7 per 1,000–
Deliberate damage and vandalism225.4 per 1,000+38%
Fraud and payment card fraud358.6 per 1,000+75%

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. 27 public transport stops are within 800 m, and the nearest rail or tram station is 1.2 km away.

Supermarkets and convenience shops0
Bakeries0
Pharmacies1
Doctors0
Dentists0
Cafés and bars0
Restaurants0
Parks and gardens3
Playgrounds2
Sports pitches9
Gyms and sports halls1
Libraries1
Nurseries and childcare1
Bus stops29
Tram and metro stops0
Railway stations0

Source: © OpenStreetMap contributors (ODbL)

Health, shops and services.

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

2.6GPs per 10,000 residentsdépartement: 6.5
1pharmacieson 1 January 2025
0food storessupermarkets, convenience stores, grocers
General practitioners1
Physiotherapists3
Pharmacies1
Bakeries2
EV charging stations1
Restaurants3
Hairdressers3
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 Issou, prevention plans in force and natural-disaster declarations since 1982.

Floodingprevention plan
Ground movementprevention plan
Industrial hazard
Transport of hazardous goods
5natural-disaster declarationssince 1996
July 2020latest recognised eventDrought (clay shrinkage)
Yesindustrial-hazard prevention planin force

Natural-disaster declarations by type

Floods and mudflows2
Drought (clay shrinkage)2
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.

4 primary and nursery schools, 1 collèges and 0 lycées are open here, 5 of them state schools.

Collège Jacques CartierLower secondary (collège) · state
Ecole maternelle FamyNursery school · state
Ecole maternelle Plein CielNursery school · state
Ecole élémentaire FamyPrimary school · state
Ecole élémentaire Les Quatre ElémentsPrimary 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.