A lower share of flats than 99% of compared French towns, at 0.9%
Households headed by a manual worker: 31% here and 14% in the typical compared French town. Locally, 4.1% of households have no car. Compared with other places, residents aged 15 to 24 are scarce here: 9%, fewer than in 82% of compared French towns. 368 residents in 170 households: that is Cuis at the 2023 Census.
Throughout this page, the Marne 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 Cuis
Fewer residents than in 2012
Cuis had 408 residents at the 2012 census and 368 in 2023, down 10%: slower growth than in 97% of compared French towns. Population ↓
Empty homes
The census found 36 homes empty (17%): for sale, to let, awaiting work or simply unused. Homes & cars ↓
An older town
Half of Cuis’ residents are under 51.8 and half over; the median of compared French towns is 44. 29% are 65 or older (France median 22%), 5.7% 80 or older. Ages ↓
Written from INSEE’s census 2023 on this page, against compared French towns.
A change of −10% since 2012 leaves Cuis behind 97% 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 median Marne town changed −2% and the median compared French town +5%; here the first five years brought −5% and the next six −5%.
Cuis is older than 88% of compared French towns: a median age of 51.8
Shares of residents by age at the 2023 census.
Age groups · share of residents
Median age of the 3,798 compared French towns
■ Cuis 51.8. The median compared French town: 44.
Against a figure of 22% in the typical compared French town, the share of residents aged 65 and over in Cuis comes in at 29%.
Women and men · all residents
51% women, 49% men
About 95 men for every 100 women. Median share of women: Marne 52.7%, France 51.8%.
Fewer single-parent households than 97% of compared French towns: 5.7%
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 Marne median and the France median
Living alone · share
31% of households are one person living alone (typical compared French town: 35%). The comparison figure for single-parent households is 10% in the typical compared French town. Across Cuis, 23% of households are couples with children.
Empty homes: 17%, a higher share than 98% 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
Households in social housing are rarer here than in 99% of compared French towns. As a reference point, 6.7% of homes stand empty in the typical compared French town. Of all households, 2.4% moved in during the last two years and 38% have stayed three decades or more. There is little gap on second homes: 2.5%, about the same as in the typical compared French town.
A median standard of living of €29,900 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.
The midpoint of living standards here is €29,900 a year per consumption unit, higher than in 84% of compared French towns.
Above 84% of compared French towns: 40% of households are headed by a retired person
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 manager or professional: 5.7% here and 9.4% in the typical compared French town. In the typical compared French town, households headed by a retired person come to 32%.
Each household is counted once, by the occupation of its reference person (usually the oldest working adult).
Immigrants: 2.5%, a lower share than 87% 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.
Set against 4.3% in the typical compared French town, 2.5% of residents are foreign nationals in Cuis. To put it in context, 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.
A lower share of single residents than 93% of compared French towns, at 20%
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
In Cuis, 47% of residents 15 and over are married, beside 43% in the typical compared French town. Single residents make up 25% in the typical compared French town.
23% of adults out of school hold a higher-education qualification, fewer than in 73% 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
The share of adults with no qualification is 22%, against 19% in the typical compared French town. Against that, 30% of adults out of school hold a higher-education qualification in the typical compared French town.
41 French towns of 368 to 2,582 people: this is the 9th oldest
The 40 compared French towns nearest in population, by median age. Hover for each one’s second homes and immigrants; click for its page.
Villejust is the youngest (37.2); Prayssac the oldest (62.3).
Median age: 1 of the 6 towns around Cuis 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 |
|---|---|---|---|---|
| Cuis | 51.8 | 29% | 2.5% | 2.5% |
| Épernay 22,174 · 2.9 mi | 44 | 23% | 5.2% | 11% |
| Aÿ-Champagne 5,103 · 4.4 mi | 51.9 | 30% | 3.2% | 2.5% |
| Blancs-Coteaux 3,080 · 6.4 mi | 51.4 | 30% | 3.9% | 1.9% |
| Dormans 2,890 · 15.5 mi | 48.9 | 28% | 3.7% | 4.9% |
| Bezannes 5,039 · 15.6 mi | 31.7 | 15% | 2.6% | 7% |
| Cormontreuil 6,534 · 15.8 mi | 50.9 | 31% | 0.8% | 4.9% |
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 Cuis
What is the population of Cuis?
368 at INSEE’s 2023 census, 10% fewer than in 2012 (408).
How old are Cuis’ residents?
The median age is 51.8, older than 88% of compared French towns. 18% are under 18 and 29% 65 or older.
How many second homes are there in Cuis?
5, with occasional dwellings: 2.5% of all homes, against 2.1% for the median compared French town.
How many immigrants live in Cuis?
INSEE counts 9 immigrants (born abroad, not French at birth), 2.5% of residents, and 9 foreign nationals (2.5%). The medians of compared French towns are 6.5% and 4.3%.
What is the median income in Cuis?
€29,900 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 October 30, 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.