Fewer flats than 98% of compared French towns: 3.4%
Households headed by a retired person: 47%, above 94% of compared French towns. Still, 8.4% of residents are 15 to 24, a lower share than in 89% of compared French towns. Mardeuil is home to 1,457 residents in 670 households, by the 2023 Census. For Mardeuil, the census puts single-parent households at 7.4%.
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 Mardeuil
Fewer residents than in 2012
Mardeuil had 1,597 residents at the 2012 census and 1,457 in 2023, down 9%: slower growth than in 96% of compared French towns. Population ↓
An older town
Half of Mardeuil’s residents are under 51.2 and half over; the median of compared French towns is 44. 31% are 65 or older (France median 22%), 7.2% 80 or older. Ages ↓
Written from INSEE’s census 2023 on this page, against compared French towns.
A change of −9% since 2012 leaves Mardeuil behind 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 Marne town changed −2% and the median compared French town +5%. Between 2012 and 2017 the population moved −6%, then −3% to 2023.
Half of Mardeuil is over 51.2, older than 87% 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
■ Mardeuil 51.2. The median compared French town: 44.
31% of Mardeuil’s residents are 65 or older, against 25% in the median Marne town and 22% in the median compared French town; 17% are under 18.
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%.
Only 29% of households are one person living alone in Mardeuil
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
Households average 2.2 people. Lower than in 56% of compared French towns: 24% of households are couples with children. On average, just over a third of households are one person living alone in the typical compared French town.
Below 86% of compared French towns: 4.9% of households rent social housing (HLM)
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
5.5% of households arrived within the last two years, while 38% have stayed 30 years or more. On households without a car, Mardeuil sits lower than 75% of compared French towns: 6.8%. Across the comparison, just over one in ten households rent social housing (HLM) in the typical compared French town. The town sits close to the norm on empty homes: 6.2%, about the same as in the typical compared French town.
At the median, €29,000 a year to live on
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 €29,000 a year per consumption unit, higher than in 78% of compared French towns.
A smaller share of households headed by a manager or professional than 84% of compared French towns: 5.1%
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
Few places have so few households headed by a manual worker: 13% here, fewer than in nearly three fifths of compared French towns. As a reference point, nearly one in ten households are headed by a manager or professional in the typical compared French town.
Each household is counted once, by the occupation of its reference person (usually the oldest working adult).
Mardeuil sits below 86% of compared French towns for foreign nationals (1.5%)
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.
With immigrants at 3.6%, Mardeuil is behind 77% of compared French towns on that count. Elsewhere, 4.3% of residents are foreign nationals 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.
Married residents: 56%, a higher share than 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
Here 17% of residents 15 and over are single, where the figure in the typical compared French town is 25%. Married residents: 43% in the typical compared French town, for comparison.
A smaller share of graduates of higher education than 86% of compared French towns: 20%
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
Compared with 19% in the typical compared French town, just over a fifth of adults out of school have no qualification here. Typically, 30% of adults out of school hold a higher-education qualification in the typical compared French town.
11th highest median age among 41 French towns of 1,457 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.
Mardeuil and its 6 nearest towns: 2 of them 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 |
|---|---|---|---|---|
| Mardeuil | 51.2 | 31% | 2.3% | 3.6% |
| Épernay 22,174 · 1.6 mi | 44 | 23% | 5.2% | 11% |
| Aÿ-Champagne 5,103 · 3.9 mi | 51.9 | 30% | 3.2% | 2.5% |
| Blancs-Coteaux 3,080 · 10.6 mi | 51.4 | 30% | 3.9% | 1.9% |
| Bezannes 5,039 · 11.9 mi | 31.7 | 15% | 2.6% | 7% |
| Cormontreuil 6,534 · 12.5 mi | 50.9 | 31% | 0.8% | 4.9% |
| Dormans 2,890 · 13.2 mi | 48.9 | 28% | 3.7% | 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 Mardeuil
What is the population of Mardeuil?
1,457 at INSEE’s 2023 census, 9% fewer than in 2012 (1,597).
How old are Mardeuil’s residents?
The median age is 51.2, older than 87% of compared French towns. 17% are under 18 and 31% 65 or older.
How many second homes are there in Mardeuil?
17, with occasional dwellings: 2.3% of all homes, against 2.1% for the median compared French town.
How many immigrants live in Mardeuil?
INSEE counts 53 immigrants (born abroad, not French at birth), 3.6% of residents, and 22 foreign nationals (1.5%). The medians of compared French towns are 6.5% and 4.3%.
What is the median income in Mardeuil?
€29,000 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.