In Marcoussis, 34% of households are couples with children, more than in 91% of compared French towns
In the typical compared French town, the share of households headed by a manager or professional is 9.4%; Marcoussis has 23%. This Essonne town had 8,618 residents in 3,480 households at the 2023 Census. The census found that 18% of residents are 65 or over here. Households without a car are rarer here than in 66% 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 Marcoussis
A town of families
34% of households are couples with children and 11% single parents with children; 19% of residents are under 15. Households ↓
Written from INSEE’s census 2023 on this page, against compared French towns.
+8% since 2012, a pace 62% of compared French towns didn’t match
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
The years 2012 to 2017 brought +2%; 2017 to 2023, +6%.
Marcoussis is younger than 72% of compared French towns: a median age of 41.1
Shares of residents by age at the 2023 census.
Age groups · share of residents
Median age of the 3,798 compared French towns
■ Marcoussis 41.1. The median compared French town: 44.
Residents aged 15 to 24: 12%, above 78% of compared French towns.
Women and men · all residents
51% women, 49% men
About 94 men for every 100 women. Median share of women: Essonne 51.3%, France 51.8%.
Marcoussis ranks below 84% of compared French towns on one-person households: 28%
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
There are 2.4 people in the average household. Higher than in three fifths of compared French towns: 11% of households are single parents. Elsewhere, 35% of households are one person living alone in the typical compared French town.
Empty homes: 4.9%, a lower share than 76% of compared French towns
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 one in ten households are newcomers of under two years, against 19% who have been there 30 years or more. On average, 6.7% of homes stand empty in the typical compared French town. Here, 15% of households rent social housing (HLM). Fewer second homes than in 73% of compared French towns: 1.2%.
Standard of living at the median: €32,750 a year
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 Marcoussis’ residents live in households with a standard of living below €32,750 a year per consumption unit, and half above: higher than in 93% of compared French towns. Poverty touches 9.0% of residents.
Households headed by a retired person: 25%, a lower share than 84% of compared French towns
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: 9.5% here and 14% in the typical compared French town. For comparison, 32% of households are headed by a retired person in the typical compared French town.
Each household is counted once, by the occupation of its reference person (usually the oldest working adult).
A larger share of foreign nationals than 64% of compared French towns: 6.1%
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.
Immigrants: 8%, above three fifths of compared French towns. The share of foreign nationals in the typical compared French town is 4.3%.
INSEE publishes no country of birth or ethnicity by commune in these tables, and the census doesn’t ask about religion.
A higher share of single residents than 55% of compared French towns, at 26%
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
Married residents: 43% of the total. Against that, a quarter of residents 15 and over are single in the typical compared French town.
Marcoussis ranks above 86% of compared French towns on graduates of higher education: 44%
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
Nearly a fifth of adults out of school have no qualification in the typical compared French town, against 15% in Marcoussis. As a yardstick, 30% of adults out of school hold a higher-education qualification in the typical compared French town.
9th lowest median age among 41 French towns of 8,536 to 8,705
The 40 compared French towns nearest in population, by median age. Hover for each one’s second homes and immigrants; click for its page.
Saint-Jory is the youngest (34.3); Le Grau-du-Roi the oldest (62.3).
Nearby, 2 of 6 towns have older populations than Marcoussis
The nearest towns of 2,500 or more, colored by median age. Source: INSEE, census 2023.
| Town | Median age | 65+ | Second homes | Immigrants |
|---|---|---|---|---|
| Marcoussis | 41.1 | 18% | 1.2% | 8% |
| Nozay 4,471 · 1.4 mi | 42.1 | 15% | 0.7% | 11% |
| Linas 7,987 · 1.9 mi | 33.8 | 12% | 0.7% | 16% |
| Montlhéry 9,772 · 1.9 mi | 34.7 | 13% | 1.8% | 16% |
| La Ville-du-Bois 8,161 · 2.2 mi | 38.2 | 14% | 2.2% | 13% |
| Leuville-sur-Orge 4,271 · 2.3 mi | 41.3 | 15% | 0.6% | 8.4% |
| Longpont-sur-Orge 6,482 · 2.6 mi | 39.7 | 16% | 0.8% | 11% |
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 Marcoussis
What is the population of Marcoussis?
8,618 at INSEE’s 2023 census, 8% more than in 2012 (8,007).
How old are Marcoussis’ residents?
The median age is 41.1, younger than 72% of compared French towns. 24% are under 18 and 18% 65 or older.
How many second homes are there in Marcoussis?
44, with occasional dwellings: 1.2% of all homes, against 2.1% for the median compared French town.
How many immigrants live in Marcoussis?
INSEE counts 690 immigrants (born abroad, not French at birth), 8% of residents, and 520 foreign nationals (6.1%). The medians of compared French towns are 6.5% and 4.3%.
What is the median income in Marcoussis?
€32,750 a year per consumption unit in 2023 (median of compared French towns €25,970); 9.0% 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 4, 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.