1.7% of homes are flats, below 99% of compared French towns
22% of households are one person living alone; in the typical compared French town the figure is 35%. Lower than in 84% of compared French towns: 17% of residents are 65 or over. The 2023 Census put Saint-Hilaire’s population at 401, in 160 households. Households without a car make up about one in 32 here (3.1%).
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 Saint-Hilaire
A town of families
34% of households are couples with children and 9.4% single parents with children; 20% of residents are under 15. Households ↓
Written from INSEE’s census 2023 on this page, against compared French towns.
Slower growth than 61% of compared French towns: Saint-Hilaire changed by +2% 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 +4% and the next six −2%.
Residents aged 15 to 24: 8.9%, a lower share than 82% 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
■ Saint-Hilaire 44.7. The median compared French town: 44.
Half of Saint-Hilaire’s residents are over 44.7, older than in 54% of compared French towns. Set beside that, 11% of residents are 15 to 24 in the typical compared French town.
Women and men · all residents
51% women, 49% men
About 95 men for every 100 women. Median share of women: Essonne 51.3%, France 51.8%.
Saint-Hilaire ranks above 91% of compared French towns on couples with children: 34%
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
Nothing unusual on single-parent households: 9.4%, close to the figure in the typical compared French town. Average household size: 2.5 people. Typically, a quarter of households are couples with children in the typical compared French town.
3.9% of homes in Saint-Hilaire are second homes
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
Households in social housing are rarer here than in 99% of compared French towns. As a reference point, 2.1% of homes are second homes in the typical compared French town. Long tenure is the mark of 22% of households (30 years or more), short tenure of 10% (under two years). Empty homes: 7.7% here and 6.7% in the typical compared French town.
The median resident lives on €31,170 a year per consumption unit
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.
Living standards centre on €31,170 a year per consumption unit: higher than in 89% of compared French towns.
A higher share of households headed by a manager or professional than 96% of compared French towns, at 28%
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
The share of households headed by a manual worker trails 99% of compared French towns: 3.1%. On top of that, on households headed by a retired person, Saint-Hilaire sits lower than 73% of compared French towns: 28%. In the typical compared French town, nearly one in ten households are headed by a manager or professional.
Each household is counted once, by the occupation of its reference person (usually the oldest working adult).
Below 71% of compared French towns: 4.2% of residents are immigrants
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 figure for foreign nationals is 2.2% in Saint-Hilaire and 4.3% in the typical compared French town. By way of 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.
Fewer single residents than 99% of compared French towns: 17%
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 people make up 48% and PACS partners 7.7%, against 43% and 6.1% in the median compared French town; 4.4% are widowed. Elsewhere, a quarter of residents 15 and over are single in the typical compared French town.
Above 84% of compared French towns: 42% of adults out of school hold a higher-education qualification
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
Set against 19% in the typical compared French town, 13% of adults out of school have no qualification in Saint-Hilaire. Measured more widely, 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 401 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).
Nearby, 2 of 6 towns have older populations than Saint-Hilaire
The nearest towns of 2,500 or more, colored by median age. Source: INSEE, census 2023.
| Town | Median age | 65+ | Second homes | Immigrants |
|---|---|---|---|---|
| Saint-Hilaire | 44.7 | 17% | 3.9% | 4.2% |
| Étampes 26,857 · 3.4 mi | 36 | 14% | 0.7% | 22% |
| Morigny-Champigny 4,412 · 5 mi | 47 | 24% | 1% | 6.2% |
| Étréchy 6,986 · 6.3 mi | 43.8 | 23% | 1.6% | 8.5% |
| Dourdan 11,415 · 7.4 mi | 40.6 | 18% | 2.2% | 15% |
| Le Mérévillois 3,477 · 8.2 mi | 44.9 | 21% | 7.4% | 7.6% |
| Saint-Chéron 5,132 · 8.4 mi | 41.6 | 18% | 13% | 9.8% |
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 Saint-Hilaire
What is the population of Saint-Hilaire?
401 at INSEE’s 2023 census, 2% more than in 2012 (393).
How old are Saint-Hilaire’s residents?
The median age is 44.7, older than 54% of compared French towns. 23% are under 18 and 17% 65 or older.
How many second homes are there in Saint-Hilaire?
7, with occasional dwellings: 3.9% of all homes, against 2.1% for the median compared French town.
How many immigrants live in Saint-Hilaire?
INSEE counts 17 immigrants (born abroad, not French at birth), 4.2% of residents, and 9 foreign nationals (2.2%). The medians of compared French towns are 6.5% and 4.3%.
What is the median income in Saint-Hilaire?
€31,170 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 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.