Achères is younger than 95% of compared French towns: a median age of 35.7
Against a figure of 10% in the typical compared French town, the share of single-parent households in Achères comes in at 16%. Compared with other places, flats are common here: 72%, more than in 91% of compared French towns. There were 9,340 households locally at the 2023 Census, home to 22,241 residents. 4.6% of homes stand empty.
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 Achères
Immigrants
INSEE counts 5,100 immigrants in Achères (people born abroad who weren’t French at birth, whatever their nationality now): 23% of residents, against 15% for the median compared commune in Yvelines. 18% are foreign nationals. Immigrants and foreign nationals ↓
A young town
Half of Achères’ residents are under 35.7 and half over; the median of compared French towns is 44. 21% are under 15 and 12% are 65 or older. Ages ↓
Social housing
40% of households rent from a social landlord (HLM), 19% rent privately and 40% own their home. Homes & cars ↓
Written from INSEE’s census 2023 on this page, against compared French towns.
A growing town: +14% since 2012, faster than 80% 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
Over the whole period the median compared French town changed +5%, and the median Yvelines town +7%. The years 2012 to 2017 brought +8%; 2017 to 2023, +6%.
Residents aged 65 and over: 12%, a lower share than 97% 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
■ Achères 35.7. The median compared French town: 44.
11% of residents are 15 to 24, about the same as in the typical compared French town. The usual figure: 22% of residents are 65 or over in the typical compared French town.
Women and men · all residents
53% women, 47% men
About 89 men for every 100 women. Median share of women: Yvelines 51.6%, France 51.8%.
More couples with children than 73% of compared French towns: 29%
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
Each household has 2.4 people on average. At 35%, the share of one-person households is lower than in 51% of compared French towns. The benchmark for couples with children in the typical compared French town: 25%.
Achères sits above 98% of compared French towns for households in social housing (40%)
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
Against a figure of 2.1% in the typical compared French town, the share of second homes in Achères comes in at 0.7%. Households in social housing: 12% in the typical compared French town, for comparison. Census figures put households without a car at 23% locally.
At the median, €26,060 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.
Per consumption unit, half of residents live on more than €26,060 a year: higher than in 51% of compared French towns. The share living below the poverty line is 15.9%.
A lower share of households headed by a retired person than 97% of compared French towns, at 18%
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
By its share of households headed by a manager or professional (23%), Achères is above 92% of compared French towns. Measured more widely, nearly a third of households are headed by a retired person in the typical compared French town. About one in eight: that is how common households headed by a manual worker are in Achères (13%).
Each household is counted once, by the occupation of its reference person (usually the oldest working adult).
Immigrants make up 23% in Achères, more than in 95% 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 Yvelines has 15%; immigrants here make up a share higher than in 95% of compared French towns. Typically, 6.5% of residents are immigrants in the typical compared French town. Here, 18% of residents are foreign nationals.
INSEE publishes no country of birth or ethnicity by commune in these tables, and the census doesn’t ask about religion.
Above 89% of compared French towns: 34% of residents 15 and over are single
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
With married residents at 40%, Achères is behind 72% of compared French towns on that count. Measured more widely, 25% of residents 15 and over are single in the typical compared French town.
Achères sits above 79% of compared French towns for graduates of higher education (40%)
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
Census figures put adults with no qualification at 19% in Achères. To put it in context, 30% of adults out of school hold a higher-education qualification in the typical compared French town.
7th lowest median age among 41 French towns of 21,461 to 23,011
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 in Loos to 52.5 in Challans.
Nearby, 4 of 6 towns have older populations than Achères
The nearest towns of 2,500 or more, colored by median age. Source: INSEE, census 2023.
| Town | Median age | 65+ | Second homes | Immigrants |
|---|---|---|---|---|
| Achères | 35.7 | 12% | 0.7% | 23% |
| Andrésy 13,834 · 1.7 mi | 40 | 17% | 1.3% | 12% |
| Chanteloup-les-Vignes 10,861 · 2 mi | 33.7 | 13% | 0.4% | 30% |
| Carrières-sous-Poissy 20,825 · 2.2 mi | 32.6 | 9.1% | 1.9% | 27% |
| Poissy 40,983 · 2.6 mi | 36.6 | 17% | 1.3% | 25% |
| Maurecourt 4,454 · 2.6 mi | 40.7 | 17% | 1.5% | 12% |
| Le Mesnil-le-Roi 6,332 · 3.1 mi | 45.3 | 20% | 1.3% | 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 Achères
What is the population of Achères?
22,241 at INSEE’s 2023 census, 14% more than in 2012 (19,469).
How old are Achères’ residents?
The median age is 35.7, younger than 95% of compared French towns. 25% are under 18 and 12% 65 or older.
How many second homes are there in Achères?
66, with occasional dwellings: 0.7% of all homes, against 2.1% for the median compared French town.
How many immigrants live in Achères?
INSEE counts 5,100 immigrants (born abroad, not French at birth), 23% of residents, and 3,910 foreign nationals (18%). The medians of compared French towns are 6.5% and 4.3%.
What is the median income in Achères?
€26,060 a year per consumption unit in 2023 (median of compared French towns €25,970); 15.9% 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 8, 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.