Younger than 99% of compared French towns: half of Cottenchy is under 30.8
The share of empty homes is 1%, against 6.7% in the typical compared French town. 566 residents in 170 households: that is Cottenchy at the 2023 Census. The census found that 1.7% of homes are flats in the town. Compared with other places, one-person households are scarce here: 28%, fewer than in 85% of compared French towns.
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 Cottenchy
A young town
Half of Cottenchy’s residents are under 30.8 and half over; the median of compared French towns is 44. 15% are under 15 and 14% are 65 or older. Ages ↓
A town of families
36% of households are couples with children and 2.8% single parents with children; 15% of residents are under 15. Households ↓
Written from INSEE’s census 2023 on this page, against compared French towns.
+5% since 2012, a pace below 50% 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 change was +7% from 2012 to 2017 and −2% from 2017 to 2023.
Cottenchy: 32% of residents are 15 to 24, above 99% 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
■ Cottenchy 30.8. The median compared French town: 44.
Compared with 22% in the typical compared French town, 14% of residents are 65 or over here. Across the comparison, 11% of residents are 15 to 24 in the typical compared French town.
Women and men · all residents
46% women, 54% men
About 115 men for every 100 women. Median share of women: Somme 52.5%, France 51.8%.
A higher share of couples with children than 94% of compared French towns, at 36%
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
Against a figure of 10% in the typical compared French town, the share of single-parent households in Cottenchy comes in at 2.8%. Across the comparison, 25% of households are couples with children in the typical compared French town. Households here average 2.4 people each.
Below 94% of compared French towns: 4% of households have no car
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. In the typical compared French town, the share of households without a car is 11%. Nearly one in ten households moved in less than two years ago; 25% have been in their home 30 years or more. Nothing unusual on second homes: 2%, close to the figure in the typical compared French town.
A typical living standard of €30,570 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 €30,570 a year per consumption unit and half below; the level is higher than in 87% of compared French towns.
Cottenchy ranks below 98% of compared French towns on households headed by a manager or professional: 2.8%
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
Households headed by a retired person: 39% here and 32% in the typical compared French town. 14% of households are headed by a manual worker, a higher share than in 50% of compared French towns. In the typical compared French town, the share of households headed by a manager or professional is 9.4%.
Each household is counted once, by the occupation of its reference person (usually the oldest working adult).
1.7% of residents are immigrants, below 94% 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 Somme has 2.5%; immigrants here make up a share lower than in 94% of compared French towns. To put it in context, 6.5% of residents are immigrants in the typical compared French town. 1.5% of residents are foreign nationals, or about one in 67.
INSEE publishes no country of birth or ethnicity by commune in these tables, and the census doesn’t ask about religion.
Cottenchy: 43% of residents 15 and over are single, above 99% 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
Married residents: 32%, below 96% of compared French towns. Single residents: 25% in the typical compared French town, for comparison.
45% of adults out of school hold a higher-education qualification, more than in 88% 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
Adults with no qualification make up 16%, against 19% in the typical compared French town. As a reference point, 30% of adults out of school hold a higher-education qualification in the typical compared French town.
The youngest of 41 French towns of 566 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.
The youngest is Cottenchy (30.8), the oldest Prayssac (62.3).
Cottenchy is younger than every town around it
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 Cottenchy
What is the population of Cottenchy?
566 at INSEE’s 2023 census, 5% more than in 2012 (540).
How old are Cottenchy’s residents?
The median age is 30.8, younger than 99% of compared French towns. 18% are under 18 and 14% 65 or older.
How many second homes are there in Cottenchy?
4, with occasional dwellings: 2% of all homes, against 2.1% for the median compared French town.
How many immigrants live in Cottenchy?
INSEE counts 10 immigrants (born abroad, not French at birth), 1.7% of residents, and 9 foreign nationals (1.5%). The medians of compared French towns are 6.5% and 4.3%.
What is the median income in Cottenchy?
€30,570 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.