Households headed by a manager or professional make up 29% in Nozay, more than in 96% of compared French towns
Empty homes: 4% here and 6.7% in the typical compared French town. At the 2023 Census, 4,471 people lived in Nozay, in 1,820 households. The census found that 15% of residents are 65 or over here. Compared with other places, households without a car are scarce here: 6.1%, fewer than in nearly four fifths of compared French towns.
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 Nozay
A town of families
34% of households are couples with children and 14% single parents with children; 18% of residents are under 15. Households ↓
Fewer residents than in 2012
Nozay had 4,757 residents at the 2012 census and 4,471 in 2023, down 6%: slower growth than in 91% of compared French towns. Population ↓
Many graduates
51% of residents 15 and over who have left education hold a diploma above the bac, 20% a master’s or more (bac+5). Qualifications ↓
Written from INSEE’s census 2023 on this page, against compared French towns.
Nozay’s population moved −6% on 2012, less than in 91% 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 compared French town changed +5% over the same years, the median Essonne town +6%. The change was −2% from 2012 to 2017 and −4% from 2017 to 2023.
13% of residents are 15 to 24, more than in 88% 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
■ Nozay 42.1. The median compared French town: 44.
The median age in Nozay is 42.1, lower than in 65% of compared French towns. Elsewhere, 11% of residents are 15 to 24 in the typical compared French town.
Women and men · all residents
52% women, 48% men
About 93 men for every 100 women. Median share of women: Essonne 51.3%, France 51.8%.
In Nozay, 34% of households are couples with children, more than in 91% 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
Against a figure of 35% in the typical compared French town, the share of one-person households in Nozay comes in at 27%. Across Nozay, 14% of households are single parents. As a reference point, 25% of households are couples with children in the typical compared French town.
0.7% of homes are second homes, fewer than in 91% 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
One household in 16 has no car (median compared French town: 11%). Households in social housing are rarer here than in 68% of compared French towns. By way of comparison, 2.1% of homes are second homes in the typical compared French town. The share of flats stands at 33%.
A median of €34,390 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 €34,390 a year per consumption unit: higher than in 95% of compared French towns. 6.0% of residents have a standard of living below 60% of France’s median.
Fewer households headed by a retired person than 92% of compared French towns: 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
Against a figure of 14% in the typical compared French town, the share of households headed by a manual worker in Nozay comes in at 7.6%. The usual figure: nearly a third of households are headed by a retired person in the typical compared French town.
Each household is counted once, by the occupation of its reference person (usually the oldest working adult).
Immigrants: 11%, a higher share than 75% 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.
The median compared commune in Essonne has 13%; immigrants here make up a share higher than in 75% of compared French towns. In the typical compared French town, 6.5% of residents are immigrants. The census found that 7.7% of residents are foreign nationals in Nozay.
INSEE publishes no country of birth or ethnicity by commune in these tables, and the census doesn’t ask about religion.
Single residents: 28%, a higher share than 71% 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
Here 45% of residents 15 and over are married, where the figure in the typical compared French town is 43%. In the typical compared French town, the share of single residents is 25%.
Graduates of higher education: 51%, a higher share than 94% 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
In the typical compared French town, the share of adults with no qualification is 19%; Nozay has 11%. Graduates of higher education make up 30% in the typical compared French town.
41 French towns of 4,437 to 4,507 people: this is the 10th 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.
The youngest is Guignes (35.7), the oldest Banyuls-sur-Mer (60.7).
Nozay is older than every town around it
The nearest towns of 2,500 or more, colored by median age. Source: INSEE, census 2023.
| Town | Median age | 65+ | Second homes | Immigrants |
|---|---|---|---|---|
| Nozay | 42.1 | 15% | 0.7% | 11% |
| La Ville-du-Bois 8,161 · 1.2 mi | 38.2 | 14% | 2.2% | 13% |
| Villejust 2,558 · 1.4 mi | 37.2 | 10% | 7.5% | 11% |
| Marcoussis 8,618 · 1.4 mi | 41.1 | 18% | 1.2% | 8% |
| Montlhéry 9,772 · 1.8 mi | 34.7 | 13% | 1.8% | 16% |
| Longpont-sur-Orge 6,482 · 2.3 mi | 39.7 | 16% | 0.8% | 11% |
| Ballainvilliers 4,904 · 2.4 mi | 38.5 | 16% | 0.5% | 9.2% |
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 Nozay
What is the population of Nozay?
4,471 at INSEE’s 2023 census, 6% fewer than in 2012 (4,757).
How old are Nozay’s residents?
The median age is 42.1, younger than 65% of compared French towns. 22% are under 18 and 15% 65 or older.
How many second homes are there in Nozay?
13, with occasional dwellings: 0.7% of all homes, against 2.1% for the median compared French town.
How many immigrants live in Nozay?
INSEE counts 500 immigrants (born abroad, not French at birth), 11% of residents, and 340 foreign nationals (7.7%). The medians of compared French towns are 6.5% and 4.3%.
What is the median income in Nozay?
€34,390 a year per consumption unit in 2023 (median of compared French towns €25,970); 6.0% 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.