Photo: Wiliamtheking111 · CC0A median age of 33.8: Épinay-sous-Sénart is younger than 98% of compared French towns
The share of flats is 82%, against 30% in the typical compared French town. Épinay-sous-Sénart counted 11,611 residents and 4,260 households at the 2023 Census. Census figures put households headed by a retired person at 22% in the town. At 19%, the share of single-parent households is higher than in 99% 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 Épinay-sous-Sénart
Immigrants
INSEE counts 3,400 immigrants in Épinay-sous-Sénart (people born abroad who weren’t French at birth, whatever their nationality now): 29% of residents, against 13% for the median compared commune in Essonne. 26% are foreign nationals. Immigrants and foreign nationals ↓
A young town
Half of Épinay-sous-Sénart’s residents are under 33.8 and half over; the median of compared French towns is 44. 25% are under 15 and 12% are 65 or older. Ages ↓
Social housing
37% of households rent from a social landlord (HLM), 12% rent privately and 48% own their home. Homes & cars ↓
Fewer residents than in 2012
Épinay-sous-Sénart had 12,434 residents at the 2012 census and 11,611 in 2023, down 7%: slower growth than in 92% of compared French towns. Population ↓
Written from INSEE’s census 2023 on this page, against compared French towns.
−7% since 2012, a pace below 92% 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
In two steps, ±0% to 2017 and −7% after, the town’s change compares with +5% for the median compared French town and +6% in Essonne.
12% of residents are 65 or over, fewer than in 97% of compared French towns
Shares of residents by age at the 2023 census.
Age groups · share of residents
Median age of the 3,798 compared French towns
■ Épinay-sous-Sénart 33.8. The median compared French town: 44.
Where 11% of residents are 15 to 24 in the typical compared French town, Épinay-sous-Sénart has 14%. By way of comparison, 22% of residents are 65 or over in the typical compared French town.
Women and men · all residents
55% women, 45% men
About 83 men for every 100 women. Median share of women: Essonne 51.3%, France 51.8%.
Épinay-sous-Sénart: 32% of households are couples with children, above 85% 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
Average household size: 2.7 people. Fewer one-person households than in 68% of compared French towns: 32%. Typically, a quarter of households are couples with children in the typical compared French town.
A higher share of households in social housing than 97% of compared French towns, at 37%
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
Some 8% of households are newcomers of under two years, against 17% who have been there 30 years or more. Census figures put second homes at 0.6% in Épinay-sous-Sénart. Higher than in 92% of compared French towns: 25% of households have no car. As a reference point, 12% of households rent social housing (HLM) in the typical compared French town.
€20,810 a year: the median standard of living
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.
Per consumption unit, half of residents live on more than €20,810 a year: lower than in 94% of compared French towns. Under the poverty line sit 27.0% of residents.
20% of households are headed by a manual worker, a share 83% of compared French towns don’t reach
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
On the census count, nearly one in ten households are headed by a manager or professional. To put it in context, 14% of households are headed by a manual worker in the typical compared French town.
Each household is counted once, by the occupation of its reference person (usually the oldest working adult).
Épinay-sous-Sénart sits above 98% of compared French towns for immigrants (29%)
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.
Against a figure of 4.3% in the typical compared French town, the share of foreign nationals in Épinay-sous-Sénart comes in at 26%. To put it in context, 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.
Above 95% of compared French towns: 37% of residents 15 and over are single
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
In Épinay-sous-Sénart, 39% of residents 15 and over are married, beside 43% in the typical compared French town. The share of single residents in the typical compared French town is 25%.
24% of adults out of school have no qualification, a share 73% of compared French towns don’t reach
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
By its share of graduates of higher education (25%), Épinay-sous-Sénart is below just over two thirds of compared French towns. The comparison figure for adults with no qualification is 19% in the typical compared French town.
Among 41 French towns of 11,392 to 11,766 people, the 2nd youngest
The 40 compared French towns nearest in population, by median age. Hover for each one’s second homes and immigrants; click for its page.
Dugny is the youngest (31.9); Saint-Cyr-sur-Mer the oldest (55.2).
Épinay-sous-Sénart is younger than every town around it
The nearest towns of 2,500 or more, colored by median age. Source: INSEE, census 2023.
| Town | Median age | 65+ | Second homes | Immigrants |
|---|---|---|---|---|
| Épinay-sous-Sénart | 33.8 | 12% | 0.6% | 29% |
| Boussy-Saint-Antoine 8,097 · 0.7 mi | 38.7 | 17% | 1% | 20% |
| Brunoy 25,643 · 0.9 mi | 41.3 | 19% | 1.3% | 15% |
| Mandres-les-Roses 4,922 · 0.9 mi | 42.7 | 18% | 1.5% | 11% |
| Périgny 2,724 · 1.3 mi | 40.3 | 14% | 1.1% | 8.4% |
| Villecresnes 11,647 · 1.6 mi | 41.5 | 19% | 1% | 13% |
| Quincy-sous-Sénart 9,477 · 1.7 mi | 39.8 | 19% | 4.3% | 20% |
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 Épinay-sous-Sénart
What is the population of Épinay-sous-Sénart?
11,611 at INSEE’s 2023 census, 7% fewer than in 2012 (12,434).
How old are Épinay-sous-Sénart’s residents?
The median age is 33.8, younger than 98% of compared French towns. 30% are under 18 and 12% 65 or older.
How many second homes are there in Épinay-sous-Sénart?
27, with occasional dwellings: 0.6% of all homes, against 2.1% for the median compared French town.
How many immigrants live in Épinay-sous-Sénart?
INSEE counts 3,410 immigrants (born abroad, not French at birth), 29% of residents, and 2,980 foreign nationals (26%). The medians of compared French towns are 6.5% and 4.3%.
What is the median income in Épinay-sous-Sénart?
€20,810 a year per consumption unit in 2023 (median of compared French towns €25,970); 27.0% 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.