Aincourt ranks below 97% of compared French towns on households without a car: 3.5%
Set against 10% in the typical compared French town, 14% of households are single parents in Aincourt. The share of households in social housing stands at 6.5%. Compared with other places, second homes are common here: 8.9%, more than in 87% of compared French towns. The 2023 Census counted 854 residents in 320 households.
Throughout this page, the Val-d'Oise 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 Aincourt
Fewer residents than in 2012
Aincourt had 953 residents at the 2012 census and 854 in 2023, down 10%: slower growth than in 97% of compared French towns. Population ↓
Written from INSEE’s census 2023 on this page, against compared French towns.
Aincourt’s population moved −10% on 2012, less than in 97% 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
Between 2012 and 2017 the population moved −4%, then −7% to 2023. Over those years, the median Val-d'Oise town changed +8% and the median compared French town +5%.
A smaller share of residents aged 15 to 24 than 81% of compared French towns: 9%
Shares of residents by age at the 2023 census.
Age groups · share of residents
Median age of the 3,798 compared French towns
■ Aincourt 44.9. The median compared French town: 44.
The median age in Aincourt is 44.9, higher than in 56% of compared French towns. In Aincourt, just over a fifth of residents are 65 or over. Set beside that, 11% of residents are 15 to 24 in the typical compared French town.
Women and men · all residents
48% women, 52% men
About 107 men for every 100 women. Median share of women: Val-d'Oise 51.5%, France 51.8%.
Aincourt: 33% of households are couples with children, above 87% 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 Val-d'Oise median and the France median
Living alone · share
Average household size: 2.3 people. 30% of households are one person living alone, a lower share than in 76% of compared French towns. Couples with children make up 25% in the typical compared French town.
Empty homes: 8.9%, a higher share than 72% 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
18% of households have been in place 30 years or more; 9.3% moved in within the last two years. In the typical compared French town, empty homes come to 6.7%.
Standard of living at the median: €29,170 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 €29,170 a year per consumption unit and half below; the level is higher than in 79% of compared French towns.
Aincourt: 14% of households are headed by a manager or professional, above 73% 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
On the census count, 31% of households are headed by a retired person. Households headed by a manager or professional make up 9.4% in the typical compared French town.
Each household is counted once, by the occupation of its reference person (usually the oldest working adult).
Aincourt: 6.8% 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.
That is higher than in 52% of compared French towns; the median compared commune in Val-d'Oise has 16%. About one in 15: that is how common immigrants are in Aincourt (6.8%). Little separates the share of foreign nationals here, 4.2%, from the figure 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.
More single residents than 90% of compared French towns: 34%
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
The share of married residents is 37%, against 43% in the typical compared French town. By way of comparison, a quarter of residents 15 and over are single in the typical compared French town.
In Aincourt, 33% of adults out of school hold a higher-education qualification, more than in 60% 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
The census found that a fifth of adults out of school have no qualification in Aincourt. In the typical compared French town, 30% of adults out of school hold a higher-education qualification.
The 18th youngest of 41 French towns of 854 to 2,582 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.
At the ends of the range sit Villejust (37.2), the youngest, and Prayssac (62.3), the oldest.
Every neighbor is younger than Aincourt
The nearest towns of 2,500 or more, colored by median age. Source: INSEE, census 2023.
| Town | Median age | 65+ | Second homes | Immigrants |
|---|---|---|---|---|
| Aincourt | 44.9 | 22% | 8.9% | 6.8% |
| Limay 17,885 · 5.5 mi | 35.2 | 13% | 0.6% | 23% |
| Magny-en-Vexin 5,779 · 5.8 mi | 41.6 | 18% | 1.5% | 11% |
| Issou 4,060 · 6 mi | 40 | 15% | 0.9% | 15% |
| Gargenville 7,869 · 6.2 mi | 39.6 | 18% | 0.8% | 13% |
| Mantes-la-Jolie 43,526 · 6.3 mi | 35.1 | 15% | 0.5% | 30% |
| Juziers 4,065 · 6.4 mi | 39.8 | 17% | 12% | 12% |
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 Aincourt
What is the population of Aincourt?
854 at INSEE’s 2023 census, 10% fewer than in 2012 (953).
How old are Aincourt’s residents?
The median age is 44.9, older than 56% of compared French towns. 20% are under 18 and 22% 65 or older.
How many second homes are there in Aincourt?
34, with occasional dwellings: 8.9% of all homes, against 2.1% for the median compared French town.
How many immigrants live in Aincourt?
INSEE counts 58 immigrants (born abroad, not French at birth), 6.8% of residents, and 36 foreign nationals (4.2%). The medians of compared French towns are 6.5% and 4.3%.
What is the median income in Aincourt?
€29,170 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.