Coignières is younger than 81% of compared French towns: a median age of 39.6
Where a quarter of households are couples with children in the typical compared French town, Coignières has 30%. At the 2023 Census Coignières was home to 4,321 people in 1,740 households. The share of households headed by a manager or professional stands at 18%. On flats, Coignières sits higher than 77% of compared French towns: 52%.
Throughout this page, the Yvelines 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 Coignières
Immigrants
INSEE counts 1,100 immigrants in Coignières (people born abroad who weren’t French at birth, whatever their nationality now): 25% of residents, against 15% for the median compared commune in Yvelines. 21% are foreign nationals. Immigrants and foreign nationals ↓
Written from INSEE’s census 2023 on this page, against compared French towns.
From 2012 to 2023, 76% of compared French towns grew faster than Coignières: −1%
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 −2% after, the town’s change compares with +5% for the median compared French town and +7% in Yvelines.
17% of residents are 65 or over, below 83% 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
■ Coignières 39.6. The median compared French town: 44.
Set against 11% in the typical compared French town, 13% of residents are 15 to 24 in Coignières. On average, 22% of residents are 65 or over in the typical compared French town.
Women and men · all residents
48% women, 52% men
About 109 men for every 100 women. Median share of women: Yvelines 51.6%, France 51.8%.
One-person households make up 38% in Coignières, more than in 61% 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 Yvelines median and the France median
Living alone · share
Just over one in ten households are single parents (typical compared French town: 10%). Households average 2.4 people. By way of comparison, 35% of households are one person living alone in the typical compared French town.
Coignières: 21% of households rent social housing (HLM), above 79% 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
Second homes: 0.5%, below 94% of compared French towns. Locally, 5.4% of homes stand empty. Few places have as many households without a car: 13% here, more than in 61% of compared French towns. In the typical compared French town, households in social housing come to 12%.
The median resident lives on €25,390 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.
At €25,390 a year per consumption unit, the median standard of living here is lower than in 56% of compared French towns. The poverty rate is 21.0%.
24% of households are headed by a retired person, fewer than in 86% 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
In the typical compared French town, 14% of households are headed by a manual worker; in Coignières, 13%. Households headed by a retired person: 32% in the typical compared French town, for comparison.
Each household is counted once, by the occupation of its reference person (usually the oldest working adult).
A larger share of immigrants than 96% of compared French towns: 25%
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.
Foreign nationals: 21%, above 97% of compared French towns. Elsewhere, 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.
Coignières: 47% of residents 15 and over are married, above 80% 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
Single residents: 27% here and 25% in the typical compared French town. Set beside that, 43% of residents 15 and over are married in the typical compared French town.
23% of adults out of school have no qualification, more than in 69% 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
Graduates of higher education: 32% here and 30% in the typical compared French town. Set beside that, nearly a fifth of adults out of school have no qualification in the typical compared French town.
Among 41 French towns of 4,282 to 4,360 people, the 5th 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.
Ages run from 33.7 in Tigery to 51.5 in Buzançais.
Median age: 3 of the 6 towns around Coignières are older
The nearest towns of 2,500 or more, colored by median age. Source: INSEE, census 2023.
| Town | Median age | 65+ | Second homes | Immigrants |
|---|---|---|---|---|
| Coignières | 39.6 | 17% | 0.5% | 25% |
| Maurepas 20,629 · 1.2 mi | 38.8 | 18% | 1.6% | 17% |
| Le Mesnil-Saint-Denis 7,276 · 1.6 mi | 43.2 | 20% | 1.9% | 8.9% |
| La Verrière 5,994 · 1.6 mi | 35.4 | 15% | 0.8% | 26% |
| Élancourt 26,365 · 2.4 mi | 37.7 | 14% | 1.2% | 17% |
| Les Essarts-le-Roi 6,831 · 2.6 mi | 43.4 | 20% | 1.3% | 12% |
| Jouars-Pontchartrain 6,039 · 3.1 mi | 42.2 | 18% | 2.7% | 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 Coignières
What is the population of Coignières?
4,321 at INSEE’s 2023 census, 1% fewer than in 2012 (4,384).
How old are Coignières’ residents?
The median age is 39.6, younger than 81% of compared French towns. 26% are under 18 and 17% 65 or older.
How many second homes are there in Coignières?
10, with occasional dwellings: 0.5% of all homes, against 2.1% for the median compared French town.
How many immigrants live in Coignières?
INSEE counts 1,070 immigrants (born abroad, not French at birth), 25% of residents, and 920 foreign nationals (21%). The medians of compared French towns are 6.5% and 4.3%.
What is the median income in Coignières?
€25,390 a year per consumption unit in 2023 (median of compared French towns €25,970); 21.0% 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 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.