Photo: Lionel Allorge · CC BY-SA 3.0Gometz-le-Châtel: 34% of households are couples with children, above 90% of compared French towns
Compared with 2.1% in the typical compared French town, 7.3% of homes are second homes here. In 2023, the Census found 2,630 residents in Gometz-le-Châtel, living in 1,060 households. The share of residents aged 65 and over stands at 17%. Lower than in 82% of compared French towns: 9% of households are headed by a manual worker.
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 Gometz-le-Châtel
A town of families
34% of households are couples with children and 13% single parents with children; 20% of residents are under 15. Households ↓
Many graduates
53% of residents 15 and over who have left education hold a diploma above the bac, 26% a master’s or more (bac+5). Qualifications ↓
Written from INSEE’s census 2023 on this page, against compared French towns.
A ±0% change since 2012: slower than 68% 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
Against +5% for the median compared French town and +6% for the median Essonne town, the change came in two steps: +5% from 2012 to 2017, then −4% to 2023.
Younger than 71% of compared French towns: half of Gometz-le-Châtel is under 41.2
Shares of residents by age at the 2023 census.
Age groups · share of residents
Median age of the 3,798 compared French towns
■ Gometz-le-Châtel 41.2. The median compared French town: 44.
Residents aged 15 to 24 make up 12%, against 11% in the typical compared French town.
Women and men · all residents
51% women, 49% men
About an even split. Median share of women: Essonne 51.3%, France 51.8%.
26% of households are one person living alone, fewer than in 92% 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
Households here average 2.5 people each. More single-parent households than in 86% of compared French towns: 13%. As a yardstick, just over a third of households are one person living alone in the typical compared French town.
Gometz-le-Châtel ranks below 72% of compared French towns on households without a car: 7.1%
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
Just over one in ten households arrived within the last two years, while 21% have stayed 30 years or more. Fewer flats than in 54% of compared French towns: 28%. Households in social housing: 13% here and 12% in the typical compared French town.
At the median, €34,990 a year to live on
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 Gometz-le-Châtel is €34,990 a year per consumption unit: higher than in 96% of compared French towns. As for poverty, 10.0% of residents are below the line.
A higher share of households headed by a manager or professional than 91% of compared French towns, at 22%
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
In the typical compared French town, the share of households headed by a retired person is 32%; Gometz-le-Châtel has 26%. Across the comparison, 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).
14% of residents are immigrants, more than in 84% 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.
By its share of foreign nationals (9.7%), Gometz-le-Châtel is above 81% of compared French towns. For comparison, 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.
Gometz-le-Châtel ranks above 81% of compared French towns on married residents: 47%
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
Locally, 25% of residents 15 and over are single. Married residents: 43% in the typical compared French town, for comparison.
Gometz-le-Châtel sits above 95% of compared French towns for graduates of higher education (53%)
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
With adults with no qualification at 12%, Gometz-le-Châtel is behind 89% of compared French towns on that count. In the typical compared French town, 30% of adults out of school hold a higher-education qualification.
The 4th youngest of 41 French towns of 2,599 to 2,658 people
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 Bourguébus (34.6), the oldest Longeville-sur-Mer (62.9).
Among its 6 nearest neighbors, 3 are older than Gometz-le-Châtel
The nearest towns of 2,500 or more, colored by median age. Source: INSEE, census 2023.
| Town | Median age | 65+ | Second homes | Immigrants |
|---|---|---|---|---|
| Gometz-le-Châtel | 41.2 | 17% | 7.3% | 14% |
| Bures-sur-Yvette 9,548 · 1 mi | 45 | 23% | 1.8% | 13% |
| Les Ulis 25,886 · 1.2 mi | 35.6 | 14% | 1.2% | 28% |
| Gif-sur-Yvette 22,544 · 1.4 mi | 40 | 19% | 3.5% | 14% |
| Orsay 16,498 · 2.4 mi | 38 | 18% | 3.5% | 16% |
| Briis-sous-Forges 3,342 · 3.8 mi | 44 | 19% | 1.4% | 7.4% |
| Saint-Rémy-lès-Chevreuse 7,747 · 3.8 mi | 47.7 | 24% | 4.2% | 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 Gometz-le-Châtel
What is the population of Gometz-le-Châtel?
2,630 at INSEE’s 2023 census, about the same as in 2012 (2,618).
How old are Gometz-le-Châtel’s residents?
The median age is 41.2, younger than 71% of compared French towns. 25% are under 18 and 17% 65 or older.
How many second homes are there in Gometz-le-Châtel?
90, with occasional dwellings: 7.3% of all homes, against 2.1% for the median compared French town.
How many immigrants live in Gometz-le-Châtel?
INSEE counts 370 immigrants (born abroad, not French at birth), 14% of residents, and 250 foreign nationals (9.7%). The medians of compared French towns are 6.5% and 4.3%.
What is the median income in Gometz-le-Châtel?
€34,990 a year per consumption unit in 2023 (median of compared French towns €25,970); 10.0% 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.