Each edition grades its towns against each other only.
A town of 1,042 in Essonne, Île-de-France.
Oncy-sur-École has subject grades but no overall grade: French towns get one from 2,500 residents. Its weakest subject is schools (D−): brevet results 15 points below the expected rate. At the median price of €2,975/m², a 70 m² home costs 6.7 times the median annual income per consumption unit (an income adjusted for household size) in the Communauté de communes des Deux Vallées.
Hazard risk isn’t graded in France yet: national flood maps cover only some areas.
American and UK towns are graded separately.
How TownRatings grades French towns →
Oncy-sur-École has 1 historic monument on the Culture ministry’s list, none at the highest level (classé).
Simon-Mathurin Lantara, born in 1729, is the one person born in Oncy-sur-École before 1900 that Wikidata records.
Explore the history →Other places to visit, museums and heritage in and near Oncy-sur-École. Best known first.
MuseumMaison Jean-Cocteau1.9 km north, in Milly-la-Forêt
ChurchChapelle Saint-Blaise-des-Simples de Milly-la-Forêt1.5 km north, in Milly-la-Forêt
MuseumLe Cyclope3.4 km north, in Milly-la-ForêtMuseumMuseumMusée du Conservatoire des Plantes1.3 km northeast, in Milly-la-ForêtMuseumMuseumLa Passion du Rouge - Écomusée des Pompiers1.8 km north, in Milly-la-ForêtPhotos from Wikimedia Commons, each under its own licence (our copy, resized).
Data highlights are ordered by what stands out in Oncy-sur-École.
Primary schools aren’t graded: France doesn’t publish their results by school.
No general lycée lies within 5 km; the nearest is 9.1 mi away. A collège lies 1.1 mi away.
| School | Level | Candidates | Passed, 2025 |
|---|---|---|---|
| Collège Jean RostandNearest collègeCollège | Collège | 155 | 74%−15 pts |
Ministry of Education (DEPP) · brevet and bac 2025, value added (IVAC, IVAL) · Licence Ouverte
Rents are the ministry’s estimates of advertised rents, not rents actually paid.
The median price, €2,975/m², comes from 35 sales of houses and apartments in Oncy-sur-École from July 2023 to June 2026. Houses made up 83% of the homes sold; apartments the rest.
Source: DGFiP, DVF property sales (Etalab geolocated); Housing Ministry, Carte des loyers 2025; INSEE, Filosofi 2023 · Licence Ouverte
Care access and life expectancy are shown for context, not graded.
The nearest emergency department to Oncy-sur-École is Centre hospitalier du Sud Seine et Marne site Fontainebleau, 10.4 mi away. 78 deaths in the town between 2016 and 2025, where France’s rates at each age predict 93: 16% below. Women in Essonne live to 86.4 on average and men to 82.2 (2025), against 85.9 and 80.3 across France.
Source: INSEE, deaths by commune of residence 2016–2025 and censuses; Eurostat, death rates by age (© European Union); INSEE, BPE 2025; DREES, APL 2024; INSEE, life expectancy by département 2025 · Licence Ouverte · The adjustment for care homes is TownRatings’ own modeling, not an official figure. A less sure grade: it could be anywhere from C− to A.
France has no History Grade yet: this card describes, it doesn’t grade.
Oncy-sur-École has 1 historic monument on the Culture ministry’s list, none at the highest level (classé).
Ministère de la Culture, Mérimée (Licence Ouverte 2.0) · INSEE, census 2023, homes by build period
5.8% of the labour force are out of work. At the census, 12.0% went to work on foot, by bike or by public transport, below Essonne’s towns (25.8%) and compared French towns (13.4%) alike.
Source: INSEE, census 2023 (commuting, employment, jobs at place of work); INSEE, Filosofi 2023 · Licence Ouverte
People aged 15 to 24 are a tenth of the population. Nearly a quarter of residents are 65 or over, above Essonne’s towns (16%) and close to compared French towns (22%). Children under 15 count for 17% of the people here.
51% women, 49% men
About 96 men for every 100 women. Median share of women: Essonne 51.3%, France 51.8%.
| Oncy-sur-École | Essonne median | France median | |
|---|---|---|---|
| Under 15 | 17% | 20% | 17% |
| 15–24 | 10% | 12% | 11% |
| 25–44 | 18% | 25% | 23% |
| 45–64 | 32% | 26% | 26% |
| 65+ | 23% | 16% | 22% |
| No diploma | 15% | 15% | 19% |
| CAP or BEP | 25% | 20% | 26% |
| Baccalauréat | 23% | 19% | 18% |
| Higher education | 32% | 39% | 30% |
INSEE, census 2023 · Essonne median and France median: the median of compared communes
Oncy-sur-École has one historic monument; beside it, the nearest classé monuments in other towns, within 15.5 mi.
Château de Milly-la-Forêt: Photo: Cyrilb1881 · CC BY-SA 3.0
One notable person was born in Oncy-sur-École.
The nearest towns of 2,500 or more. The map uses IGN’s commune boundaries. See them on the map →
| Town | People | Miles | Overall | Cost | Safety | Health |
|---|---|---|---|---|---|---|
| Oncy-sur-École | 1,042 | — | — | C | — | B |
| Milly-la-Forêt | 4,562 | 1.1 | C+ | C− | C+ | B+ |
| Maisse | 2,797 | 4 | — | C+ | — | B |
| Boutigny-sur-Essonne | 3,146 | 5.3 | — | C | — | D |
| Le Malesherbois Loiret | 8,016 | 7.6 | C | B− | B− | C |
| La Ferté-Alais | 3,731 | 8.4 | B | C | B | B− |
| Champcueil | 2,854 | 8.7 | — | C | — | A |
People: INSEE, census 2023. Miles: center to center.
Oncy-sur-École has no Safety Grade: over a quarter of its index would rest on the département’s average. Recorded figures: an average of 8 recorded violent incidents and 12.4 recorded burglaries, vehicle thefts, thefts from vehicles and acts of criminal damage per 1,000 residents a year, 2023–2025.
They grade D−, better than 1% of compared French towns. Primary schools aren’t graded: France doesn’t publish their results by school.
Homes cost more than in most compared French towns: the median sale price from July 2023 to June 2026 was €2,975/m², against €2,430/m² for the median of compared French towns. Incomes are higher than in most compared French towns, so Oncy-sur-École grades C for cost of living.
Commune in Essonne, Île-de-France
Oncy-sur-École is a commune of 1,042 people in the Communauté de communes des Deux Vallées. 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
Sources: INSEE, census 2023 (population, employment, commuting) · INSEE, Filosofi 2023 (income per consumption unit, poverty) · DGFiP, DVF property sales, July 2023 to June 2026 · Housing Ministry, Carte des loyers 2025 · SSMSI, recorded crime by commune, 2023–2025 · Ministry of Education (DEPP), brevet and bac results and value-added indicators, 2025 · INSEE, deaths by commune of residence 2016–2025 and censuses 2012–2023; Eurostat, death rates by age (© European Union); INSEE, BPE 2025 (care homes, emergency and maternity units, GPs, pharmacies); DREES, APL 2024; INSEE, life expectancy by département 2025 (provisional) · INSEE, BPE 2025 and Filosofi 200 m grid (walking distances) · IGN Admin Express (boundaries) · TownRatings grades: our own summary of the data, ranking French towns against each other only, updated October 30, 2026. Under the Licence Ouverte / Open Licence 2.0 (Etalab).
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.