Half of Morsang-sur-Orge is under 38, younger than 88% of compared French towns
32% of households are couples with children; in the typical compared French town the figure is 25%. Few places have so few households headed by a retired person: 23% here, fewer than in 89% of compared French towns. The 2023 Census put Morsang-sur-Orge’s population at 21,667, in 8,720 households. For Morsang-sur-Orge, the census puts flats at 50%.
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 Morsang-sur-Orge
Immigrants
INSEE counts 4,300 immigrants in Morsang-sur-Orge (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 ↓
A young town
Half of Morsang-sur-Orge’s residents are under 38 and half over; the median of compared French towns is 44. 22% are under 15 and 14% are 65 or older. Ages ↓
Written from INSEE’s census 2023 on this page, against compared French towns.
Slower growth than 65% of compared French towns: Morsang-sur-Orge changed by +1% since 2012
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%.
Residents aged 65 and over: 14%, a lower share than 92% 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
■ Morsang-sur-Orge 38. The median compared French town: 44.
Residents aged 15 to 24: 12% here and 11% in the typical compared French town. As a yardstick, 22% of residents are 65 or over in the typical compared French town.
Women and men · all residents
52% women, 48% men
About 91 men for every 100 women. Median share of women: Essonne 51.3%, France 51.8%.
Single-parent households make up 15% in Morsang-sur-Orge, more than in 96% 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
On average, 2.5 people share a household. For single-parent households, the comparison in the typical compared French town is 10%. Compared with other places, one-person households are scarce here: 31%, fewer than in 70% of compared French towns.
A larger share of households in social housing than 81% of compared French towns: 22%
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
Nothing unusual on second homes: 1.4%, close to the figure in the typical compared French town. Set beside that, just over one in ten households rent social housing (HLM) in the typical compared French town. Put another way, about one in 13: 8% of homes stand empty. Households without a car are more common here than in 60% of compared French towns.
Median living standard: €27,520 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 residents live in households above €27,520 a year per consumption unit and half below; the level is higher than in 66% of compared French towns. The poverty rate is 15.2%.
Morsang-sur-Orge sits above 75% of compared French towns for households headed by a manager or professional (15%)
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
Put another way, about one in eight: 13% of households are headed by a manual worker. To put it in context, 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).
Morsang-sur-Orge ranks above 92% of compared French towns on immigrants: 20%
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 median compared commune in Essonne has 13%; immigrants here make up a share higher than in 92% of compared French towns. Across the comparison, 6.5% of residents are immigrants in the typical compared French town. Foreign nationals make up about one in six here (16%).
INSEE publishes no country of birth or ethnicity by commune in these tables, and the census doesn’t ask about religion.
Morsang-sur-Orge sits above 79% of compared French towns for single residents (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
On the census count, 42% of residents 15 and over are married. For single residents, the comparison in the typical compared French town is 25%.
A larger share of graduates of higher education than 66% of compared French towns: 35%
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: nearly a fifth of the total. Measured more widely, 30% of adults out of school hold a higher-education qualification in the typical compared French town.
41 French towns of 21,019 to 22,350 people: this is the 13th 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.
At the ends of the range sit Saint-Cyr-l'École (34.5), the youngest, and Gujan-Mestras (52.5), the oldest.
4 in 6 nearby towns have a higher median age than Morsang-sur-Orge
The nearest towns of 2,500 or more, colored by median age. Source: INSEE, census 2023.
| Town | Median age | 65+ | Second homes | Immigrants |
|---|---|---|---|---|
| Morsang-sur-Orge | 38 | 14% | 1.4% | 20% |
| Villemoisson-sur-Orge 7,332 · 0.9 mi | 42.3 | 19% | 1.1% | 13% |
| Viry-Châtillon 30,838 · 1.2 mi | 38.1 | 16% | 1.8% | 23% |
| Fleury-Mérogis 13,721 · 1.4 mi | 30.2 | 4.7% | 0.8% | 29% |
| Sainte-Geneviève-des-Bois 35,438 · 1.4 mi | 40.8 | 18% | 1.1% | 21% |
| Grigny 26,842 · 1.6 mi | 31 | 9.6% | 0.2% | 40% |
| Savigny-sur-Orge 37,601 · 1.7 mi | 38.9 | 16% | 1.5% | 22% |
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 Morsang-sur-Orge
What is the population of Morsang-sur-Orge?
21,667 at INSEE’s 2023 census, 1% more than in 2012 (21,428).
How old are Morsang-sur-Orge’s residents?
The median age is 38, younger than 88% of compared French towns. 26% are under 18 and 14% 65 or older.
How many second homes are there in Morsang-sur-Orge?
130, with occasional dwellings: 1.4% of all homes, against 2.1% for the median compared French town.
How many immigrants live in Morsang-sur-Orge?
INSEE counts 4,290 immigrants (born abroad, not French at birth), 20% of residents, and 3,490 foreign nationals (16%). The medians of compared French towns are 6.5% and 4.3%.
What is the median income in Morsang-sur-Orge?
€27,520 a year per consumption unit in 2023 (median of compared French towns €25,970); 15.2% 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.