A higher share of couples with children than 87% of compared French towns, at 33%
Against a figure of 12% in the typical compared French town, the share of households in social housing in Montgeron comes in at 22%. This Essonne town had 24,022 residents in 9,460 households at the 2023 Census. Here, 21% of households are headed by a manager or professional. At 19%, the share of households without a car is higher than in 80% 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 Montgeron
Immigrants
INSEE counts 4,700 immigrants in Montgeron (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. 16% are foreign nationals. Immigrants and foreign nationals ↓
Written from INSEE’s census 2023 on this page, against compared French towns.
From 2012 to 2023, 57% of compared French towns grew faster than Montgeron: +3%
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, +2% to 2017 and +1% after, the town’s change compares with +5% for the median compared French town and +6% in Essonne.
Younger than 69% of compared French towns: half of Montgeron is under 41.4
Shares of residents by age at the 2023 census.
Age groups · share of residents
Median age of the 3,798 compared French towns
■ Montgeron 41.4. The median compared French town: 44.
In Montgeron, 13% of residents are 15 to 24, beside 11% in the typical compared French town. For Montgeron, the census puts residents aged 65 and over at 19%.
Women and men · all residents
52% women, 48% men
About 92 men for every 100 women. Median share of women: Essonne 51.3%, France 51.8%.
A larger share of single-parent households than 88% of compared French towns: 13%
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 Montgeron, 30% of households are one person living alone, beside 35% in the typical compared French town. Against that, one in ten households are single parents in the typical compared French town. Households here average 2.5 people each.
A larger share of flats than 72% of compared French towns: 47%
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
Without a car: one household in five, against 11% in the median compared French town. On second homes, Montgeron sits lower than 85% of compared French towns: 0.9%. For comparison, 30% of homes are flats in the typical compared French town. 7.1% of homes stand empty, or about one in 14.
Standard of living at the median: €28,860 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.
At €28,860 a year per consumption unit, the median standard of living here is higher than in 77% of compared French towns. One measure of hardship: 16.3% of residents are below the poverty line.
Only 10% of households are headed by a manual worker in Montgeron
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
Here 30% of households are headed by a retired person, where the figure in the typical compared French town is 32%. In the typical compared French town, the share of households headed by a manual worker is 14%.
Each household is counted once, by the occupation of its reference person (usually the oldest working adult).
20% of residents are immigrants, more than in 92% 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.
The figure for foreign nationals is 16% in Montgeron and 4.3% in the typical compared French town. On average, 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.
More single residents than 79% of compared French towns: 30%
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
43% of residents 15 and over are married, a lower share than in 52% of compared French towns. Single residents make up 25% in the typical compared French town.
Graduates of higher education: 42%, a higher share than 83% of compared French towns
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
For Montgeron, the census puts adults with no qualification at 18%. To put it in context, 30% of adults out of school hold a higher-education qualification in the typical compared French town.
Among 41 French towns of 22,718 to 25,551 people, the 18th oldest
The 40 compared French towns nearest in population, by median age. Hover for each one’s second homes and immigrants; click for its page.
Hérouville-Saint-Clair is the youngest (34.5); Vichy the oldest (53.1).
1 in 6 nearby towns have a higher median age than Montgeron
The nearest towns of 2,500 or more, colored by median age. Source: INSEE, census 2023.
| Town | Median age | 65+ | Second homes | Immigrants |
|---|---|---|---|---|
| Montgeron | 41.4 | 19% | 0.9% | 20% |
| Crosne 9,610 · 1.1 mi | 38.3 | 15% | 1.4% | 15% |
| Vigneux-sur-Seine 31,466 · 1.4 mi | 35 | 13% | 1.2% | 27% |
| Yerres 27,906 · 1.7 mi | 41.7 | 20% | 1.3% | 13% |
| Brunoy 25,643 · 2.2 mi | 41.3 | 19% | 1.3% | 15% |
| Ablon-sur-Seine 5,988 · 2.2 mi | 36.2 | 13% | 3.1% | 22% |
| Draveil 30,098 · 2.4 mi | 41.1 | 19% | 1.1% | 17% |
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 Montgeron
What is the population of Montgeron?
24,022 at INSEE’s 2023 census, 3% more than in 2012 (23,281).
How old are Montgeron’s residents?
The median age is 41.4, younger than 69% of compared French towns. 23% are under 18 and 19% 65 or older.
How many second homes are there in Montgeron?
90, with occasional dwellings: 0.9% of all homes, against 2.1% for the median compared French town.
How many immigrants live in Montgeron?
INSEE counts 4,700 immigrants (born abroad, not French at birth), 20% of residents, and 3,750 foreign nationals (16%). The medians of compared French towns are 6.5% and 4.3%.
What is the median income in Montgeron?
€28,860 a year per consumption unit in 2023 (median of compared French towns €25,970); 16.3% 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.