Sonchamp has subject grades but no overall grade: French towns get one from 2,500 residents. Its weakest subject is cost of living (C+): at the median price, a 70 m² home costs 6.5 times the median annual income per consumption unit in the intercommunality. Its strongest is health (A): after allowing for care homes, deaths from 2016 to 2025 were 28% below expected, against 12% below for the median of compared French towns.
Hazard risk isn’t graded in France yet: national flood maps cover only some areas.
Each subject compares Sonchamp with other French towns of 2,500 or more, ordered by how far its rank is from the middle. American and UK towns are graded separately.
Data highlights are ordered by what stands out in Sonchamp.
HealthHealth A
Sonchamp loses fewer people than its age profile suggests, 72 per 100 expected, below Yvelines’ towns and compared French towns
Care access and life expectancy are shown for context, not graded.
From 2016 to 2025, 84 residents of Sonchamp died, against 116 expected from France’s death rates at each age: 28% fewer. Women in Yvelines live to 86.8 on average and men to 82.3 (2025), against 85.9 and 80.3 across France. There are 2 general practitioners in the town.
−28%deaths against expected, after care homesAHealth Grade
Deaths per 100 expected · 2016–2025
Raw72
Adjusted72
Median town88
Expected100
2
GPs in Sonchamp · 3.2 GP consultations a year per resident within reach (APL)
5 mi
to the nearest emergency department, Centre hospitalier de Rambouillet
5 mi
to the nearest maternity unit, Centre hospitalier de Rambouillet
86.8 · 82.3
years of life expectancy at birth, women · men, Yvelines, 2025 (provisional) · France 85.9 · 80.3
Renting in Sonchamp costs an estimated advertised €14.79/m² a month, against €18.40/m² in Yvelines’ towns and €12.41/m² in compared French towns
Rents are the ministry’s estimates of advertised rents, not rents actually paid.
Half the homes sold went for more than €3,068/m², between Yvelines’ towns (€3,717/m²) and compared French towns (€2,430/m²). House rents are put at about €10.59/m² a month. Between July 2023 and June 2026, buyers took 46 homes in Sonchamp.
€3,068/m²median sale price
Median sale price per m² · Jul 2023 to Jun 2026
Sonchamp€3,068/m²
Median of towns€2,430/m²
Yvelines median€3,717/m²
By type
Median per m²
Sales
Houses
€3,068/m²
46
€14.79/m²
estimated advertised apartment rent a month, charges included (€12.46 to €17.55/m² a month)
6.5
times the median annual income per consumption unit in the intercommunality, for 70 m² at the median price
€10.59/m²
estimated advertised house rent a month, charges included
€33,050
median annual income per consumption unit, Communauté d'agglomération Rambouillet Territoires
Source: DGFiP, DVF property sales (Etalab geolocated); Housing Ministry, Carte des loyers 2025; INSEE, Filosofi 2023 · Licence Ouverte
History
Old homes shape Sonchamp: 22% were built before 1919, more than in Yvelines’ towns and across compared French towns
France has no History Grade yet: this card describes, it doesn’t grade.
Its oldest listed monument dates from the 11th century. The Culture ministry’s list holds 2 historic monuments in Sonchamp; none is classé, France’s top protection.
Ministère de la Culture, Mérimée (Licence Ouverte 2.0) · INSEE, census 2023, homes by build period
Who lives here
Fewer children live in Sonchamp than in Yvelines’ towns or compared French towns: 16% are under 15
20% of residents are 65 or over, above Yvelines’ towns (17%) but below compared French towns (22%). Degrees are held by 47% of adults. Aged 15 to 24: just over one in ten residents.
46.3median age
SonchampYvelines medianFrance median
Ages · share of residents
11%
Under 1515–2425–4445–6465+
Highest diploma · residents 15 and older who have left education
No diploma10%
CAP or BEP22%
Baccalauréat16%
Higher education47%
Women and men · all residents
50% women, 50% men
WomenFrance medianMen
About an even split. Median share of women: Yvelines 51.6%, France 51.8%.
INSEE, census 2023 · Yvelines median and France median: the median of compared communes
Work & commuteJobs & income A−
In Sonchamp, 18.9% of commuters go on foot, by bike or by public transport, against 35.4% in Yvelines’ towns and 13.4% in compared French towns
Households’ median disposable income: €33,320 a year per consumption unit. Unemployment stood at 6.8%, lower than both Yvelines’ towns (8.7%) and compared French towns (10.1%). Jobs located in Sonchamp: 300, for 800 residents in work (0.4 each).
19%walk, cycle or take transit
How working residents got to work · census 2023
Driving73%
Public transport17%
On foot1%
Motorbike or scooter1%
Bicycle0%
300
jobs based in Sonchamp, 0.4 per working resident
6.8%
unemployment rate, ages 15 to 64 in the labor force · median of compared French towns 10.1%
€33,320
median annual income per consumption unit, 2023 · median of compared French towns €25,970
7%
worked without traveling (at or from home)
B−
Walkability: better than 47% of compared French towns
Source: INSEE, census 2023 (commuting, employment, jobs at place of work); INSEE, Filosofi 2023 · Licence Ouverte
Safety
Sonchamp has no Safety Grade: over a quarter of its index would rest on the département’s average
0 offenses in the graded categories were recorded in Sonchamp in 2025.
4.6recorded violent incidents per 1,000 residents a year
Recorded by type · 2025
Fraud12
Not in the gradeTheft without violence, drug use and fraud are shown for information but left out of the Safety Grade, which counts violence plus burglaries, vehicle thefts, thefts from vehicles and criminal damage per resident.
4.6
recorded violent incidents per 1,000 residents a year, 2023–2025 average
9.7
recorded burglaries, vehicle thefts, thefts from vehicles and acts of criminal damage per 1,000 residents a year, 2023–2025 average
0
offenses recorded in the graded categories in 2025
61.0%
of the index rests on the département’s average, used where small counts aren’t published
People: INSEE, census 2023. Miles: center to center.
Questions about Sonchamp
Is Sonchamp safe?
Sonchamp has no Safety Grade: over a quarter of its index would rest on the département’s average. Recorded figures: an average of 4.6 recorded violent incidents and 9.7 recorded burglaries, vehicle thefts, thefts from vehicles and acts of criminal damage per 1,000 residents a year, 2023–2025.
Is Sonchamp expensive to live in?
Incomes are higher than in most compared French towns, so Sonchamp grades C+ for cost of living.
About Sonchamp
Commune in Yvelines, Île-de-France
Sonchamp is a commune of 1,678 people in the Communauté d'agglomération Rambouillet Territoires. TownRatings compares communes, France’s local unit: each has its own mayor and its own statistics. Its area takes in the town and the countryside around it.
Built from INSEE’s 2026 official geography (COG) and IGN Admin Express boundaries
Contains public sector information under the Licence Ouverte / Open Licence 2.0 (Etalab): INSEE, DGFiP, the Interior Ministry’s statistics service (SSMSI), the Ministry of Education (DEPP), the Health Ministry’s statistics service (DREES) and the Housing Ministry (Carte des loyers). Commune boundaries: IGN Admin Express.
