3.4% of households are single parents, below 99% of compared French towns
By its share of households without a car (5.1%), Saclas is below 87% of compared French towns. The 2023 Census put the town’s population at 1,819, in 750 households. Residents aged 15 to 24 make up about one in 11 here (9.1%). Fewer households in social housing than in 69% of compared French towns: 8.4%.
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.
Saclas’s population moved +1% on 2012, less than in 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
In two steps, ±0% to 2017 and +1% after, the town’s change compares with +5% for the median compared French town and +6% in Essonne.
A median age of 44.7: Saclas is older than 55% 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
■ Saclas 44.7. The median compared French town: 44.
Put another way, about one in five: 21% of residents are 65 or over.
Women and men · all residents
50% women, 50% men
About an even split. Median share of women: Essonne 51.3%, France 51.8%.
Couples with children: 31%, a higher share than 81% 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
The typical household size is 2.3 people. Locally, 32% of households are one person living alone. The comparison figure for couples with children is 25% in the typical compared French town.
21% of homes are flats, below 65% 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
Empty homes make up 8.3%, against 6.7% in the typical compared French town. In the typical compared French town, flats come to 30%. Second homes make up about one in 27 here (3.7%).
At the median, €29,050 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.
Half of residents live in households above €29,050 a year per consumption unit and half below; the level is higher than in 79% of compared French towns.
Saclas: 12% of households are headed by a manager or professional, above 65% 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 manual worker: 13% of the total. Few places have as many households headed by a retired person: 33% here, more than in 53% of compared French towns. On average, 9.4% of 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).
More foreign nationals than 69% of compared French towns: 7%
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.
Compared with 6.5% in the typical compared French town, 9% of residents are immigrants here. In the typical compared French town, 4.3% of residents are foreign nationals. That is higher than in nearly two thirds of compared French towns; the median compared commune in Essonne has 13%.
INSEE publishes no country of birth or ethnicity by commune in these tables, and the census doesn’t ask about religion.
Single residents make up 24% in Saclas, less than in 63% 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
In Saclas, 42% of residents 15 and over are married. Single residents: 25% in the typical compared French town, for comparison.
Graduates of higher education: 28%, a lower share than 56% 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
18% of adults out of school have no qualification, fewer than in 59% of compared French towns. Elsewhere, 30% of adults out of school hold a higher-education qualification in the typical compared French town.
18th lowest median age among 41 French towns of 1,819 to 2,582
The 40 compared French towns nearest in population, by median age. Hover for each one’s second homes and immigrants; click for its page.
Villejust is the youngest (37.2); Prayssac the oldest (62.3).
2 in 6 nearby towns have a higher median age than Saclas
The nearest towns of 2,500 or more, colored by median age. Source: INSEE, census 2023.
| Town | Median age | 65+ | Second homes | Immigrants |
|---|---|---|---|---|
| Saclas | 44.7 | 21% | 3.7% | 9% |
| Le Mérévillois 3,477 · 3.3 mi | 44.9 | 21% | 7.4% | 7.6% |
| Étampes 26,857 · 5.5 mi | 36 | 14% | 0.7% | 22% |
| Angerville 4,428 · 6.4 mi | 38.7 | 15% | 2.4% | 13% |
| Morigny-Champigny 4,412 · 6.8 mi | 47 | 24% | 1% | 6.2% |
| Étréchy 6,986 · 9.7 mi | 43.8 | 23% | 1.6% | 8.5% |
| Maisse 2,797 · 12.5 mi | 43.1 | 20% | 3.8% | 6.7% |
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 Saclas
What is the population of Saclas?
1,819 at INSEE’s 2023 census, 1% more than in 2012 (1,798).
How old are Saclas’ residents?
The median age is 44.7, older than 55% of compared French towns. 22% are under 18 and 21% 65 or older.
How many second homes are there in Saclas?
32, with occasional dwellings: 3.7% of all homes, against 2.1% for the median compared French town.
How many immigrants live in Saclas?
INSEE counts 160 immigrants (born abroad, not French at birth), 9% of residents, and 130 foreign nationals (7%). The medians of compared French towns are 6.5% and 4.3%.
What is the median income in Saclas?
€29,050 a year per consumption unit in 2023 (median of compared French towns €25,970). 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.