Flats make up 2.8% in Mareuil-en-Brie, less than in 99% of compared French towns
In the typical compared French town, just over a third of households are one person living alone; in Mareuil-en-Brie, 24%. At the 2023 Census, 288 people lived here, in 120 households. Households headed by a manual worker come to 39% locally, about four in ten. Residents aged 65 and over are rarer here than in 82% of compared French towns.
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 Mareuil-en-Brie
One home in 10 is a second home
The census counted 15 second homes and occasional dwellings in Mareuil-en-Brie, 10% of its 140 homes: higher than in 88% of compared French towns. 92% of them are houses. Their owners live elsewhere, so they aren’t in the population figures on this page. Homes & cars ↓
Written from INSEE’s census 2023 on this page, against compared French towns.
10% of homes are second homes, a share 88% of compared French towns don’t reach
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
21% of households have been in place 30 years or more; 5.6% moved in within the last two years. On households without a car, Mareuil-en-Brie sits lower than 90% of compared French towns: 4.7%. The wider picture: 2.1% of homes are second homes in the typical compared French town. Empty homes: 4.4%, below 83% of compared French towns.
Growth of +13% since 2012 puts Mareuil-en-Brie ahead of 77% 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 first five years brought +8%; the six to 2023, +5%.
Younger than 72% of compared French towns: half of Mareuil-en-Brie is under 41.1
Shares of residents by age at the 2023 census.
Age groups · share of residents
Median age of the 3,798 compared French towns
■ Mareuil-en-Brie 41.1. The median compared French town: 44.
Residents aged 15 to 24: 9.7% here and 11% in the typical compared French town.
Women and men · all residents
51% women, 49% men
About an even split. Median share of women: Marne 52.7%, France 51.8%.
17% of households are single parents, more than in 98% 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
Couples with children make up 27%, against 25% in the typical compared French town. The comparison figure for single-parent households is 10% in the typical compared French town. The average household has 2.4 people.
€26,010 a year: the median standard of living
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 €26,010 a year: higher than in 50% of compared French towns.
Mareuil-en-Brie ranks below 57% of compared French towns on households headed by a manager or professional: 8.4%
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: nearly a third of the total. As a yardstick, 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).
A smaller share of immigrants than 91% of compared French towns: 2%
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.
By its share of foreign nationals (1.4%), Mareuil-en-Brie is below 88% of compared French towns. In the typical compared French town, the share of immigrants is 6.5%.
INSEE publishes no country of birth or ethnicity by commune in these tables, and the census doesn’t ask about religion.
19% of residents 15 and over are single, fewer than in 95% 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
Locally, 44% of residents 15 and over are married. The share of single residents in the typical compared French town is 25%.
A smaller share of graduates of higher education than 60% of compared French towns: 27%
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
Locally, 18% of adults out of school have no qualification. Elsewhere, 30% of adults out of school hold a higher-education qualification in the typical compared French town.
4th lowest median age among 41 French towns of 288 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.
The youngest is Villejust (37.2), the oldest Prayssac (62.3).
No nearby town is as young as Mareuil-en-Brie
The nearest towns of 2,500 or more, colored by median age. Source: INSEE, census 2023.
| Town | Median age | 65+ | Second homes | Immigrants |
|---|---|---|---|---|
| Mareuil-en-Brie | 41.1 | 17% | 10% | 2% |
| Dormans 2,890 · 9.2 mi | 48.9 | 28% | 3.7% | 4.9% |
| Montmirail 3,535 · 10.9 mi | 51.3 | 32% | 3.4% | 5.2% |
| Épernay 22,174 · 11.1 mi | 44 | 23% | 5.2% | 11% |
| Blancs-Coteaux 3,080 · 12.4 mi | 51.4 | 30% | 3.9% | 1.9% |
| Aÿ-Champagne 5,103 · 14 mi | 51.9 | 30% | 3.2% | 2.5% |
| Sézanne 4,576 · 16.4 mi | 50.7 | 30% | 3% | 8.3% |
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 Mareuil-en-Brie
What is the population of Mareuil-en-Brie?
288 at INSEE’s 2023 census, 13% more than in 2012 (255).
How old are Mareuil-en-Brie’s residents?
The median age is 41.1, younger than 72% of compared French towns. 25% are under 18 and 17% 65 or older.
How many second homes are there in Mareuil-en-Brie?
15, with occasional dwellings: 10% of all homes, against 2.1% for the median compared French town.
How many immigrants live in Mareuil-en-Brie?
INSEE counts 6 immigrants (born abroad, not French at birth), 2% of residents, and 4 foreign nationals (1.4%). The medians of compared French towns are 6.5% and 4.3%.
What is the median income in Mareuil-en-Brie?
€26,010 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.