Photo: Ville de Longjumeau · CC BY-SA 2.5Half of Longjumeau is under 36.9, younger than 92% of compared French towns
The figure for households headed by a retired person is 22% in Longjumeau and 32% in the typical compared French town. More flats than in 91% of compared French towns: 72%. There were 9,310 households locally at the 2023 Census, home to 21,996 residents. Households without a car make up about one in five here (20%).
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 Longjumeau
Immigrants
INSEE counts 4,500 immigrants in Longjumeau (people born abroad who weren’t French at birth, whatever their nationality now): 21% of residents, against 13% for the median compared commune in Essonne. 17% are foreign nationals. Immigrants and foreign nationals ↓
A young town
Half of Longjumeau’s residents are under 36.9 and half over; the median of compared French towns is 44. 21% are under 15 and 15% are 65 or older. Ages ↓
Written from INSEE’s census 2023 on this page, against compared French towns.
Since 2012, Longjumeau has changed by +1%, slower than 65% 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 median Essonne town changed +6% and the median compared French town +5%; here the first five years brought −2% and the next six +4%.
Longjumeau ranks below 92% of compared French towns on residents aged 65 and over: 15%
Shares of residents by age at the 2023 census.
Age groups · share of residents
Median age of the 3,798 compared French towns
■ Longjumeau 36.9. The median compared French town: 44.
Set against 11% in the typical compared French town, 13% of residents are 15 to 24 in Longjumeau. Typically, 22% of residents are 65 or over in the typical compared French town.
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%.
Longjumeau sits above 94% of compared French towns for single-parent households (15%)
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
28% of households are couples with children, against 25% in the median compared French town; 15% are single parents with their children (10%). Across Longjumeau, 39% of households are one person living alone.
Longjumeau: 25% of households rent social housing (HLM), above 86% 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
14% of households have been in place 30 years or more; 9% moved in within the last two years. Lower than in two thirds of compared French towns: 1.4% of homes are second homes. Elsewhere, 12% of households rent social housing (HLM) in the typical compared French town. Car-free households: one in five, where the median compared French town has 11%.
Per consumption unit, the median standard of living is €26,560 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.
Per consumption unit, half of residents live on more than €26,560 a year: higher than in 56% of compared French towns. The share living below the poverty line is 18.0%.
17% of households are headed by a manager or professional, 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
14% of households are headed by a manual worker, or about one in seven. As a yardstick, nearly one in ten households are headed by a manager or professional in the typical compared French town.
Each household is counted once, by the occupation of its reference person (usually the oldest working adult).
Longjumeau: 21% of residents are immigrants, above 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.
Against a figure of 4.3% in the typical compared French town, the share of foreign nationals in Longjumeau comes in at 17%. The usual figure: 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.
Single residents: 34%, a higher share than 89% 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
Married residents: 39% here and 43% in the typical compared French town. As a reference point, 25% of residents 15 and over are single in the typical compared French town.
Longjumeau ranks above 77% of compared French towns on graduates of higher education: 39%
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
Adults with no qualification are more common here than in 53% of compared French towns. Typically, 30% of adults out of school hold a higher-education qualification in the typical compared French town.
12th lowest median age among 41 French towns of 21,268 to 22,718
The 40 compared French towns nearest in population, by median age. Hover for each one’s second homes and immigrants; click for its page.
Loos is the youngest (33); Gujan-Mestras the oldest (52.5).
Nearby, 5 of 6 towns have older populations than Longjumeau
The nearest towns of 2,500 or more, colored by median age. Source: INSEE, census 2023.
| Town | Median age | 65+ | Second homes | Immigrants |
|---|---|---|---|---|
| Longjumeau | 36.9 | 15% | 1.4% | 21% |
| Chilly-Mazarin 20,443 · 1.1 mi | 36.8 | 14% | 1.7% | 24% |
| Saulx-les-Chartreux 6,733 · 1.1 mi | 37.8 | 14% | 1.1% | 11% |
| Ballainvilliers 4,904 · 1.3 mi | 38.5 | 16% | 0.5% | 9.2% |
| Champlan 2,615 · 1.5 mi | 42.2 | 17% | 2.4% | 20% |
| Épinay-sur-Orge 10,722 · 1.6 mi | 40.7 | 18% | 1.7% | 15% |
| Morangis 14,129 · 1.8 mi | 40.4 | 18% | 0.8% | 21% |
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 Longjumeau
What is the population of Longjumeau?
21,996 at INSEE’s 2023 census, 1% more than in 2012 (21,739).
How old are Longjumeau’s residents?
The median age is 36.9, younger than 92% of compared French towns. 26% are under 18 and 15% 65 or older.
How many second homes are there in Longjumeau?
140, with occasional dwellings: 1.4% of all homes, against 2.1% for the median compared French town.
How many immigrants live in Longjumeau?
INSEE counts 4,550 immigrants (born abroad, not French at birth), 21% of residents, and 3,800 foreign nationals (17%). The medians of compared French towns are 6.5% and 4.3%.
What is the median income in Longjumeau?
€26,560 a year per consumption unit in 2023 (median of compared French towns €25,970); 18.0% 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.