Montlignon sits above 95% of compared French towns for couples with children (36%)
Households headed by a manager or professional make up 31%, against 9.4% in the typical compared French town. Montlignon has more residents aged 15 to 24 than 94% of compared French towns, at 14%. The 2023 Census put the town’s population at 3,038, in 1,220 households. For Montlignon, the census puts households in social housing at 8.7%.
Throughout this page, the Val-d'Oise 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 Montlignon
A town of families
36% of households are couples with children and 8.4% single parents with children; 18% of residents are under 15. Households ↓
Many graduates
52% of residents 15 and over who have left education hold a diploma above the bac, 23% a master’s or more (bac+5). Qualifications ↓
Written from INSEE’s census 2023 on this page, against compared French towns.
A +15% change since 2012: faster than 81% 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
The years 2012 to 2017 brought +12%; 2017 to 2023, +2%. Over the whole period the median compared French town changed +5%, and the median Val-d'Oise town +8%.
Below 73% of compared French towns: 19% of residents are 65 or over
Shares of residents by age at the 2023 census.
Age groups · share of residents
Median age of the 3,798 compared French towns
■ Montlignon 43.9. The median compared French town: 44.
The median age in Montlignon is 43.9, lower than in 51% of compared French towns. The usual figure: 22% of residents are 65 or over in the typical compared French town.
Women and men · all residents
51% women, 49% men
About an even split. Median share of women: Val-d'Oise 51.5%, France 51.8%.
28% of households are one person living alone, fewer than in 86% 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 Val-d'Oise median and the France median
Living alone · share
Households here average 2.5 people each. Single-parent households are rarer here than in 75% of compared French towns. In the typical compared French town, one-person households come to 35%.
Montlignon sits below 91% of compared French towns for second homes (0.7%)
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
Long tenure is the mark of 16% of households (30 years or more), short tenure of 12% (under two years). For second homes, the comparison in the typical compared French town is 2.1%. Few places have so few empty homes: 5.6% here, fewer than in nearly two thirds of compared French towns. On households without a car, 11% here is much the same as in the typical compared French town.
€36,980 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.
The median standard of living in Montlignon is €36,980 a year per consumption unit: higher than in 97% of compared French towns. Living below the poverty line: 8.0% of residents.
Households headed by a manual worker make up 4.4% in Montlignon, less than in 97% 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 retired person make up 29%, against 32% in the typical compared French town. Typically, 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).
Montlignon: 9.9% of residents are immigrants, above 70% 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.
In the typical compared French town, 4.3% of residents are foreign nationals; in Montlignon, 5.7%. As a reference point, 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.
Married residents make up 47% in Montlignon, more than in 79% 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
Set against 25% in the typical compared French town, 28% of residents 15 and over are single in Montlignon. The comparison figure for married residents is 43% in the typical compared French town.
Montlignon sits above 94% of compared French towns for graduates of higher education (52%)
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
11% of adults out of school have no qualification, against 19% in the typical compared French town. The benchmark for graduates of higher education in the typical compared French town: 30%.
41 French towns of 3,008 to 3,068 people: this is the 14th 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.
The youngest is Pont-à-Vendin (35.9), the oldest Agon-Coutainville (63.8).
Montlignon is older 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 |
|---|---|---|---|---|
| Montlignon | 43.9 | 19% | 0.7% | 9.9% |
| Margency 3,012 · 0.6 mi | 42 | 19% | 1% | 13% |
| Andilly 2,742 · 0.9 mi | 42.7 | 20% | 0.8% | 15% |
| Saint-Prix 7,612 · 1 mi | 43 | 19% | 0.8% | 13% |
| Eaubonne 26,211 · 1.3 mi | 38.7 | 16% | 1.5% | 18% |
| Soisy-sous-Montmorency 18,008 · 1.6 mi | 40.9 | 19% | 1.4% | 19% |
| Saint-Leu-la-Forêt 16,138 · 1.8 mi | 41.7 | 18% | 0.7% | 12% |
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 Montlignon
What is the population of Montlignon?
3,038 at INSEE’s 2023 census, 15% more than in 2012 (2,653).
How old are Montlignon’s residents?
The median age is 43.9, younger than 51% of compared French towns. 23% are under 18 and 19% 65 or older.
How many second homes are there in Montlignon?
9, with occasional dwellings: 0.7% of all homes, against 2.1% for the median compared French town.
How many immigrants live in Montlignon?
INSEE counts 300 immigrants (born abroad, not French at birth), 9.9% of residents, and 170 foreign nationals (5.7%). The medians of compared French towns are 6.5% and 4.3%.
What is the median income in Montlignon?
€36,980 a year per consumption unit in 2023 (median of compared French towns €25,970); 8.0% 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.