2.4% of homes stand empty, below 98% of compared French towns
Households in social housing are rarer here than in 99% of compared French towns. About one in 29: that is how common households without a car are in Carnoy-Mametz (3.5%). The town had 255 residents in 110 households at the 2023 Census. With households headed by a retired person at 39%, Carnoy-Mametz is ahead of 81% of compared French towns on that count.
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 Carnoy-Mametz
Fewer residents than in 2012
Carnoy-Mametz had 280 residents at the 2012 census and 255 in 2023, down 9%: slower growth than in 96% of compared French towns. Population ↓
A town of families
35% of households are couples with children and 4.3% single parents with children; 16% of residents are under 15. Households ↓
Written from INSEE’s census 2023 on this page, against compared French towns.
Carnoy-Mametz’s population moved −9% on 2012, less than in 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
In two steps, +2% to 2017 and −11% after, the town’s change compares with +5% for the median compared French town and −3% in Somme.
Only 8.6% of residents are 15 to 24 in Carnoy-Mametz
Shares of residents by age at the 2023 census.
Age groups · share of residents
Median age of the 3,798 compared French towns
■ Carnoy-Mametz 47.2. The median compared French town: 44.
Residents aged 65 and over make up 24%, against 22% in the typical compared French town. With a median age of 47.2, Carnoy-Mametz is older than 70% of compared French towns.
Women and men · all residents
50% women, 50% men
About an even split. Median share of women: Somme 52.5%, France 51.8%.
Couples with children make up 35% in Carnoy-Mametz, more than in 92% 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 Somme median and the France median
Living alone · share
The typical household size is 2.3 people. Across the comparison, a quarter of households are couples with children in the typical compared French town. Census figures put single-parent households at 4.3% in Carnoy-Mametz. On one-person households, Carnoy-Mametz sits lower than 75% of compared French towns: 30%.
8.7% of homes in Carnoy-Mametz are second homes
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
In the last two years, 2.7% of households moved in; at the other end, 34% have stayed 30 years or more. Flats are rarer here than in 99% of compared French towns. As a reference point, 2.1% of homes are second homes in the typical compared French town.
Standard of living at the median: €27,440 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.
Per consumption unit, half of residents live on more than €27,440 a year: higher than in 65% of compared French towns.
Carnoy-Mametz sits below 91% of compared French towns for households headed by a manager or professional (4.3%)
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
22% of households are headed by a manual worker (typical compared French town: 14%). 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).
0% of residents in Carnoy-Mametz 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.
Foreign nationals are rarer here than in 99% of compared French towns.
INSEE publishes no country of birth or ethnicity by commune in these tables, and the census doesn’t ask about religion.
Carnoy-Mametz ranks above 99% of compared French towns on married residents: 56%
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
A quarter of residents 15 and over are single in the typical compared French town, against 16% in Carnoy-Mametz. The benchmark for married residents in the typical compared French town: 43%.
15% of adults out of school have no qualification, fewer than in 75% 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
Census figures put graduates of higher education at 29% in Carnoy-Mametz. Elsewhere, nearly a fifth of adults out of school have no qualification in the typical compared French town.
15th highest median age among 41 French towns of 255 to 2,582
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.
A younger town than 1 of the 6 around it: Carnoy-Mametz
The nearest towns of 2,500 or more, colored by median age. Source: INSEE, census 2023.
| Town | Median age | 65+ | Second homes | Immigrants |
|---|---|---|---|---|
| Carnoy-Mametz | 47.2 | 24% | 8.7% | 0% |
| Albert 9,521 · 4 mi | 46 | 25% | 1.7% | 2.5% |
| Bapaume 3,779 · 9 mi | 43.3 | 23% | 1.5% | 3.5% |
| Péronne 7,090 · 9.7 mi | 48.6 | 28% | 1.4% | 4.3% |
| Corbie 5,982 · 11.9 mi | 47.2 | 26% | 1.1% | 1.9% |
| Rosières-en-Santerre 2,894 · 12.5 mi | 46.9 | 27% | 0.9% | 2.3% |
| Villers-Bretonneux 4,647 · 13.2 mi | 41 | 18% | 0.6% | 1.7% |
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 Carnoy-Mametz
What is the population of Carnoy-Mametz?
255 at INSEE’s 2023 census, 9% fewer than in 2012 (280).
How old are Carnoy-Mametz’s residents?
The median age is 47.2, older than 70% of compared French towns. 20% are under 18 and 24% 65 or older.
How many second homes are there in Carnoy-Mametz?
11, with occasional dwellings: 8.7% of all homes, against 2.1% for the median compared French town.
How many immigrants live in Carnoy-Mametz?
INSEE counts 0 immigrants (born abroad, not French at birth), 0% of residents, and 0 foreign nationals (0%). The medians of compared French towns are 6.5% and 4.3%.
What is the median income in Carnoy-Mametz?
€27,440 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.