Coisy ranks below 98% of compared French towns on one-person households: 23%
Households headed by a manager or professional are more common here than in 91% of compared French towns. At the 2023 Census Coisy was home to 387 people in 150 households. On the census count, 3.9% of households have no car. In the typical compared French town, 6.7% of homes stand empty; in the town, 3%.
Throughout this page, the Somme 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 Coisy
Growing fast
Coisy had 302 residents at the 2012 census and 387 in 2023, up 28%: faster growth than in 96% of compared French towns. Population ↓
Many graduates
47% of residents 15 and over who have left education hold a diploma above the bac, 13% a master’s or more (bac+5). Qualifications ↓
Written from INSEE’s census 2023 on this page, against compared French towns.
Since 2012, Coisy has grown +28%, faster than 96% 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 those years, the median Somme town changed −3% and the median compared French town +5%. Between 2012 and 2017 the population moved +13%, then +14% to 2023.
Residents aged 15 to 24: 12%, a higher share than 74% 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
■ Coisy 43.6. The median compared French town: 44.
The median age in Coisy is 43.6, lower than in 53% of compared French towns. Across Coisy, just over a fifth of residents are 65 or over. Elsewhere, 11% of residents are 15 to 24 in the typical compared French town.
Women and men · all residents
51% women, 49% men
About an even split. Median share of women: Somme 52.5%, France 51.8%.
A larger share of couples with children than 85% of compared French towns: 32%
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 Somme median and the France median
Living alone · share
Where 10% of households are single parents in the typical compared French town, Coisy has 13%. Across the comparison, 25% of households are couples with children in the typical compared French town. A household here holds 2.6 people on average.
Only 1% of homes are second homes in Coisy
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. On average, 2.1% of homes are second homes in the typical compared French town. Turnover: 5.8% of households moved in less than two years ago, and 25% have lived in their home 30 years or more.
The median resident lives on €29,570 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.
Half of Coisy’s residents live in households with a standard of living below €29,570 a year per consumption unit, and half above: higher than in 82% of compared French towns.
A smaller share of households headed by a manual worker than 93% of compared French towns: 6.4%
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 figure for households headed by a retired person is 39% in Coisy and 32% in the typical compared French town. Against that, 14% of households are headed by a manual worker in the typical compared French town.
Each household is counted once, by the occupation of its reference person (usually the oldest working adult).
A smaller share of foreign nationals than 99% of compared French towns: 0.5%
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 Somme has 2.5%; immigrants here make up a share lower than in just over four fifths of compared French towns. By way of comparison, 4.3% of residents are foreign nationals in the typical compared French town. Immigrants: 3.1% of the total.
INSEE publishes no country of birth or ethnicity by commune in these tables, and the census doesn’t ask about religion.
In Coisy, 48% of residents 15 and over are married, more than in 85% 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 make up 23%, against 25% in the typical compared French town. In the typical compared French town, the share of married residents is 43%.
47% of adults out of school hold a higher-education qualification, a share 90% of compared French towns don’t reach
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
Adults with no qualification: 12%, below 90% of compared French towns. Elsewhere, 30% of adults out of school hold a higher-education qualification in the typical compared French town.
Of 41 French towns its size (387 to 2,582 people), the 15th 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.
At the ends of the range sit Villejust (37.2), the youngest, and Prayssac (62.3), the oldest.
Coisy and its 6 nearest towns: 4 of them are older
The nearest towns of 2,500 or more, colored by median age. Source: INSEE, census 2023.
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 Coisy
What is the population of Coisy?
387 at INSEE’s 2023 census, 28% more than in 2012 (302).
How old are Coisy’s residents?
The median age is 43.6, younger than 53% of compared French towns. 23% are under 18 and 22% 65 or older.
How many second homes are there in Coisy?
2, with occasional dwellings: 1% of all homes, against 2.1% for the median compared French town.
How many immigrants live in Coisy?
INSEE counts 12 immigrants (born abroad, not French at birth), 3.1% of residents, and 2 foreign nationals (0.5%). The medians of compared French towns are 6.5% and 4.3%.
What is the median income in Coisy?
€29,570 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 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.