Photo: GFreihalter · CC BY-SA 3.0Quincy-sous-Sénart is younger than 80% of compared French towns: a median age of 39.8
In the typical compared French town, the share of flats is 30%; Quincy-sous-Sénart has 51%. The town had 9,477 residents in 4,010 households at the 2023 Census. Census figures put households headed by a manager or professional at 15% here. At 16%, the share of households in social housing is higher than in nearly two thirds of compared French towns.
Throughout this page, the Essonne median and the France median are the median of compared communes (those with an overall grade), each figure its own median. Source: INSEE, census 2023.
What stands out about the people of Quincy-sous-Sénart
Immigrants
INSEE counts 1,900 immigrants in Quincy-sous-Sénart (people born abroad who weren’t French at birth, whatever their nationality now): 20% of residents, against 13% for the median compared commune in Essonne. 14% are foreign nationals. Immigrants and foreign nationals ↓
Written from INSEE’s census 2023 on this page, against compared French towns.
A +14% change since 2012: faster than 80% of compared French towns
Residents at INSEE’s last three censuses, each recast in the 2026 commune boundaries. France has no yearly estimate by commune between censuses.
2012 to 2023
2017 to 2023
Against +5% for the median compared French town and +6% for the median Essonne town, the change came in two steps: +9% from 2012 to 2017, then +5% to 2023.
Quincy-sous-Sénart sits below 69% of compared French towns for residents aged 65 and over (19%)
Shares of residents by age at the 2023 census.
Age groups · share of residents
Median age of the 3,798 compared French towns
■ Quincy-sous-Sénart 39.8. The median compared French town: 44.
12% of residents are 15 to 24; in the typical compared French town the figure is 11%. In the typical compared French town, 22% of residents are 65 or over.
Women and men · all residents
52% women, 48% men
About 91 men for every 100 women. Median share of women: Essonne 51.3%, France 51.8%.
In Quincy-sous-Sénart, 29% of households are couples with children, more than in 71% of compared French towns
A household is everyone who shares a main home (résidence principale). Household types come from INSEE’s fuller sample of a quarter of census forms.
Against the Essonne median and the France median
Living alone · share
In the typical compared French town, the share of one-person households is 35%; Quincy-sous-Sénart has 37%. Against that, a quarter of households are couples with children in the typical compared French town. Households here average 2.3 people each.
More households without a car than 82% of compared French towns: 20%
Every home the census counted: main residences, second homes and occasional dwellings (INSEE counts them together), and empty homes. Owning and renting are on Cost of living.
All homes · share of homes
Type of home
Cars per household · share of households
In the typical compared French town, 2.1% of homes are second homes; in Quincy-sous-Sénart, 4.3%. Long tenure is the mark of 18% of households (30 years or more), short tenure of 13% (under two years). Against that, just over one in ten households have no car in the typical compared French town.
€26,930 a year is the median standard of living here
The standard of living (niveau de vie) is a household’s disposable income after taxes and benefits, divided by its consumption units (UC) to allow for its size and make-up: 1 for the first adult, 0.5 for each other person 14 or older, 0.3 for each child under 14.
Medians of compared communes. Source: INSEE, Filosofi 2023.
Half of residents live in households above €26,930 a year per consumption unit and half below; the level is higher than in 61% of compared French towns. Below the poverty line: 15.0% of residents.
Only 28% of households are headed by a retired person in Quincy-sous-Sénart
Households by the socio-professional group (PCS) of their reference person, INSEE’s own categories. Jobs and commuting are on the Work & commute page.
Households by reference person’s group · share of households
Households headed by a manual worker make up about one in seven here (14%). 15% of Quincy-sous-Sénart’s households are headed by a manager or professional, against 9.4% in the median compared French town; 28% by a retired person (32%).
Each household is counted once, by the occupation of its reference person (usually the oldest working adult).
Immigrants make up 20% in Quincy-sous-Sénart, more than in 93% of compared French towns
INSEE publishes two measures, which overlap but aren’t the same. Neither is the UK’s “born abroad”.
Share of residents · census 2023
Immigrant (immigré)
Born abroad, not French at birth. Someone stays an immigrant after becoming French. A French citizen born abroad (for example in Algeria before 1962) is not one.
Foreign national (étranger)
Not a French citizen today, wherever born. A child born in France to foreign parents can be a foreign national without being an immigrant.
14% of residents are foreign nationals; in the typical compared French town the figure is 4.3%. As a yardstick, 6.5% of residents are immigrants in the typical compared French town.
INSEE publishes no country of birth or ethnicity by commune in these tables, and the census doesn’t ask about religion.
30% of residents 15 and over are single, more than in 77% of compared French towns
Residents 15 and over by how they live: the census asks both the legal status and whether people live as a couple.
Residents 15 and over · share
Locally, 42% of residents 15 and over are married. In the typical compared French town, the share of single residents is 25%.
A higher share of graduates of higher education than 61% of compared French towns, at 33%
Highest diploma of residents 15 and over who have left education, in French terms: the levels don’t map one-to-one to UK or U.S. ones.
Highest diploma · 15 and over, out of education
Compared with 19% in the typical compared French town, just over a fifth of adults out of school have no qualification here. The wider picture: 30% of adults out of school hold a higher-education qualification in the typical compared French town.
Ranked by age, 9th youngest of 41 French towns this size
The 40 compared French towns nearest in population, by median age. Hover for each one’s second homes and immigrants; click for its page.
Aucamville is the youngest (36.9); Carqueiranne the oldest (57.9).
Around Quincy-sous-Sénart, 3 of 6 towns have a higher median age
The nearest towns of 2,500 or more, colored by median age. Source: INSEE, census 2023.
| Town | Median age | 65+ | Second homes | Immigrants |
|---|---|---|---|---|
| Quincy-sous-Sénart | 39.8 | 19% | 4.3% | 20% |
| Boussy-Saint-Antoine 8,097 · 1 mi | 38.7 | 17% | 1% | 20% |
| Combs-la-Ville 23,350 · 1.6 mi | 37.8 | 16% | 0.7% | 17% |
| Périgny 2,724 · 1.6 mi | 40.3 | 14% | 1.1% | 8.4% |
| Épinay-sous-Sénart 11,611 · 1.7 mi | 33.8 | 12% | 0.6% | 29% |
| Mandres-les-Roses 4,922 · 2 mi | 42.7 | 18% | 1.5% | 11% |
| Brunoy 25,643 · 2.2 mi | 41.3 | 19% | 1.3% | 15% |
Health, work, housing and schools
What this data can and can’t tell you
- Census 2023. INSEE’s census is a rolling survey: a fifth of small communes each year, 8% of homes in large ones each year. “2023” pools the surveys of 2021 to 2025, so the figures describe the town around 2023, not on one day.
- Medians of compared communes. The comparisons are the median of the département’s compared communes and of France’s (those with an overall grade), each figure its own median: not the total for the département or for France, which large cities pull towards their own figures.
- Immigrants and foreign nationals. INSEE’s two measures: an immigrant was born abroad without French nationality; a foreign national isn’t French today. Neither is a count of people born abroad, which INSEE doesn’t publish by commune.
- Second homes. Homes used for holidays or weekends, with occasional dwellings (kept for work, for example), which INSEE counts together. Their owners are counted where they live, not here.
- Standard of living. INSEE’s Filosofi: disposable income per consumption unit, from tax and benefit files, 2023. The poverty rate is the share of residents below 60% of France’s median. Not published for the smallest communes.
- What France doesn’t ask. The French census asks nothing about ethnicity, religion, language or health, so this page has no such section.
Questions about who lives in Quincy-sous-Sénart
What is the population of Quincy-sous-Sénart?
9,477 at INSEE’s 2023 census, 14% more than in 2012 (8,303).
How old are Quincy-sous-Sénart’s residents?
The median age is 39.8, younger than 80% of compared French towns. 22% are under 18 and 19% 65 or older.
How many second homes are there in Quincy-sous-Sénart?
190, with occasional dwellings: 4.3% of all homes, against 2.1% for the median compared French town.
How many immigrants live in Quincy-sous-Sénart?
INSEE counts 1,930 immigrants (born abroad, not French at birth), 20% of residents, and 1,360 foreign nationals (14%). The medians of compared French towns are 6.5% and 4.3%.
What is the median income in Quincy-sous-Sénart?
€26,930 a year per consumption unit in 2023 (median of compared French towns €25,970); 15.0% of residents live below the poverty line. Source: INSEE, Filosofi.
Sources: INSEE, census 2023 (population, ages, households, homes, marital status, diplomas, immigrants, foreign nationals, employment), 2026 geography · INSEE, Filosofi 2023 (standard of living, poverty) · IGN Admin Express (boundaries) · Medians and percentiles: TownRatings, over compared French towns, updated November 9, 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.