A smaller share of empty homes than 98% of compared French towns: 2.2%
In the typical compared French town, 2.1% of homes are second homes; in Marly, 0.5%. This Moselle town is home to 10,286 residents in 4,620 households, by the 2023 Census. Locally, 43% of households are headed by a retired person. Households in social housing are more common here than in just over two thirds of compared French towns.
Throughout this page, the Moselle 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 Marly
An older town
Half of Marly’s residents are under 50.9 and half over; the median of compared French towns is 44. 30% are 65 or older (France median 22%), 7.7% 80 or older. Ages ↓
Written from INSEE’s census 2023 on this page, against compared French towns.
+5% since 2012, a pace below 51% 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 +3%, then +2% to 2023. Over those years, the median Moselle town changed −1% and the median compared French town +5%.
Half of Marly is over 50.9, older than 86% 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
■ Marly 50.9. The median compared French town: 44.
The share of residents aged 15 to 24 trails 62% of compared French towns: 10%. Residents aged 65 and over make up about one in three here (30%).
Women and men · all residents
52% women, 48% men
About 92 men for every 100 women. Median share of women: Moselle 51.8%, France 51.8%. Women live longer than men, so towns with many older residents have more women.
30% of households are one person living alone, below 77% 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 Moselle median and the France median
Living alone · share
The average household has 2.2 people. On single-parent households, Marly sits lower than 85% of compared French towns: 7.6%. For one-person households, the comparison in the typical compared French town is 35%. The share of couples with children trails 55% of compared French towns: 24%.
7.5% of households have no car, below 70% 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
Long tenure is the mark of 30% of households (30 years or more), short tenure of 8.5% (under two years). At 28%, the share of flats is lower than in 52% of compared French towns. Elsewhere, just over one in ten households have no car in the typical compared French town.
Half of residents have a standard of living above €31,010 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 €31,010 a year: higher than in 88% of compared French towns. Some 7.0% of residents fall below the poverty line.
A smaller share of households headed by a manual worker than 88% of compared French towns: 7.9%
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
With households headed by a manager or professional at 14%, Marly is ahead of 74% of compared French towns on that count.
Each household is counted once, by the occupation of its reference person (usually the oldest working adult).
Marly sits below 63% of compared French towns for foreign nationals (3.1%)
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.
Immigrants make up a share lower than in just over half of compared French towns; the median compared commune in Moselle has 12%. In the typical compared French town, 4.3% of residents are foreign nationals. Across Marly, 6.4% of residents are immigrants.
INSEE publishes no country of birth or ethnicity by commune in these tables, and the census doesn’t ask about religion.
Married residents make up 51% in Marly, more 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
Here just over a fifth of residents 15 and over are single, where the figure in the typical compared French town is 25%. For married residents, the comparison in the typical compared French town is 43%.
13% of adults out of school have no qualification, fewer than in 84% 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 graduates of higher education tops nearly four fifths of compared French towns: 40%. The benchmark for adults with no qualification in the typical compared French town: 19%.
Ranked by age, 2nd 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 Serris (33.5), the oldest Fouesnant (57).
No nearby town is as old as Marly
The nearest towns of 2,500 or more, colored by median age. Source: INSEE, census 2023.
| Town | Median age | 65+ | Second homes | Immigrants |
|---|---|---|---|---|
| Marly | 50.9 | 30% | 0.5% | 6.4% |
| Montigny-lès-Metz 21,718 · 2 mi | 44.1 | 23% | 1.1% | 12% |
| Moulins-lès-Metz 5,265 · 2.6 mi | 45.1 | 25% | 0.9% | 7.9% |
| Longeville-lès-Metz 4,102 · 3.4 mi | 45.8 | 25% | 2.4% | 10% |
| Metz 122,572 · 3.4 mi | 36.4 | 18% | 2.7% | 20% |
| Scy-Chazelles 2,753 · 3.5 mi | 46.9 | 24% | 1.8% | 8.9% |
| Ars-sur-Moselle 4,616 · 4 mi | 44.5 | 20% | 0.6% | 8.6% |
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 Marly
What is the population of Marly?
10,286 at INSEE’s 2023 census, 5% more than in 2012 (9,829).
How old are Marly’s residents?
The median age is 50.9, older than 86% of compared French towns. 18% are under 18 and 30% 65 or older.
How many second homes are there in Marly?
21, with occasional dwellings: 0.5% of all homes, against 2.1% for the median compared French town.
How many immigrants live in Marly?
INSEE counts 660 immigrants (born abroad, not French at birth), 6.4% of residents, and 320 foreign nationals (3.1%). The medians of compared French towns are 6.5% and 4.3%.
What is the median income in Marly?
€31,010 a year per consumption unit in 2023 (median of compared French towns €25,970); 7.0% of residents live below the poverty line. 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.