15% of homes stand empty, more than in 95% of compared French towns
In Châtillon-sur-Marne, nearly one in ten homes are flats, beside 30% in the typical compared French town. For Châtillon-sur-Marne, the census puts households in social housing at 3.3%. With a median age of 47, Châtillon-sur-Marne is older than 69% of compared French towns. This Marne town is home to 625 residents in 300 households, by 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 Châtillon-sur-Marne
Fewer residents than in 2012
Châtillon-sur-Marne had 702 residents at the 2012 census and 625 in 2023, down 11%: slower growth than in 98% of compared French towns. Population ↓
Empty homes
The census found 58 homes empty (15%): for sale, to let, awaiting work or simply unused. Homes & cars ↓
Written from INSEE’s census 2023 on this page, against compared French towns.
−11% since 2012, a pace below 98% 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
Between 2012 and 2017 the population moved −5%, then −6% to 2023.
Only 8.5% of residents are 15 to 24 in Châtillon-sur-Marne
Shares of residents by age at the 2023 census.
Age groups · share of residents
Median age of the 3,798 compared French towns
■ Châtillon-sur-Marne 47. The median compared French town: 44.
Residents aged 65 and over: 25%, above 67% of compared French towns. In the typical compared French town, 11% of residents are 15 to 24.
Women and men · all residents
50% women, 50% men
About an even split. Median share of women: Marne 52.7%, France 51.8%.
In Châtillon-sur-Marne, 8.2% of households are single parents, fewer than in 78% 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 Marne median and the France median
Living alone · share
In the typical compared French town, the share of couples with children is 25%; Châtillon-sur-Marne has 23%. Single-parent households make up 10% in the typical compared French town. Households average 2.1 people.
Châtillon-sur-Marne sits above 86% of compared French towns for second homes (8.1%)
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
Set against 11% in the typical compared French town, 6% of households have no car in Châtillon-sur-Marne. Across the comparison, 2.1% of homes are second homes in the typical compared French town.
Per consumption unit, the median standard of living is €27,110 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 €27,110 a year per consumption unit and half below; the level is higher than in 62% of compared French towns.
6.6% of households are headed by a manager or professional, fewer than in 71% of compared French towns
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
In the typical compared French town, the share of households headed by a retired person is 32%; Châtillon-sur-Marne has 30%. Against that, nearly one in ten households are headed by a manager or professional in the typical compared French town. About one in six: that is how common households headed by a manual worker are in Châtillon-sur-Marne (16%).
Each household is counted once, by the occupation of its reference person (usually the oldest working adult).
Below 70% of compared French towns: 4.3% of residents 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.
The median compared commune in Marne has 4.9%; immigrants here make up a share lower than in 70% of compared French towns. Set beside that, 6.5% of residents are immigrants in the typical compared French town. 4.5% of residents are foreign nationals, or about one in 22.
INSEE publishes no country of birth or ethnicity by commune in these tables, and the census doesn’t ask about religion.
Single residents: 21%, a lower share than 86% 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
The share of married residents stands at 44%. For single residents, the comparison in the typical compared French town is 25%.
A smaller share of graduates of higher education than 69% of compared French towns: 25%
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 come to 19% in Châtillon-sur-Marne, about two in ten. Against that, 30% of adults out of school hold a higher-education qualification in the typical compared French town.
Ranked by age, 15th oldest of 41 French towns this size
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 Villejust (37.2), the oldest Prayssac (62.3).
Among its 6 nearest neighbors, 3 are older than Châtillon-sur-Marne
The nearest towns of 2,500 or more, colored by median age. Source: INSEE, census 2023.
| Town | Median age | 65+ | Second homes | Immigrants |
|---|---|---|---|---|
| Châtillon-sur-Marne | 47 | 25% | 8.1% | 4.3% |
| Dormans 2,890 · 5.7 mi | 48.9 | 28% | 3.7% | 4.9% |
| Épernay 22,174 · 9.8 mi | 44 | 23% | 5.2% | 11% |
| Aÿ-Champagne 5,103 · 12.1 mi | 51.9 | 30% | 3.2% | 2.5% |
| Fère-en-Tardenois 2,836 · 13.3 mi | 47.8 | 28% | 1.9% | 3.3% |
| Bezannes 5,039 · 13.5 mi | 31.7 | 15% | 2.6% | 7% |
| Tinqueux 10,771 · 14.5 mi | 44.4 | 24% | 0.8% | 6.1% |
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 Châtillon-sur-Marne
What is the population of Châtillon-sur-Marne?
625 at INSEE’s 2023 census, 11% fewer than in 2012 (702).
How old are Châtillon-sur-Marne’s residents?
The median age is 47, older than 69% of compared French towns. 20% are under 18 and 25% 65 or older.
How many second homes are there in Châtillon-sur-Marne?
31, with occasional dwellings: 8.1% of all homes, against 2.1% for the median compared French town.
How many immigrants live in Châtillon-sur-Marne?
INSEE counts 27 immigrants (born abroad, not French at birth), 4.3% of residents, and 28 foreign nationals (4.5%). The medians of compared French towns are 6.5% and 4.3%.
What is the median income in Châtillon-sur-Marne?
€27,110 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.