Photo: Mickael Denet · CC BY-SA 3.0Marck ranks above 95% of compared French towns on couples with children: 36%
Against a figure of 6.7% in the typical compared French town, the share of empty homes in Marck comes in at 3.9%. At the 2023 Census Marck was home to 10,467 people in 4,070 households. Put another way, about one in 13: 8% of homes are flats. Nearly a fifth of residents are 65 or over, fewer than in 69% of compared French towns.
Throughout this page, the Pas-de-Calais 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 Marck
A town of families
36% of households are couples with children and 9.7% single parents with children; 20% of residents are under 15. Households ↓
Written from INSEE’s census 2023 on this page, against compared French towns.
A change of +3% since 2012 leaves Marck behind 58% 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 the whole period the median compared French town changed +5%, and the median Pas-de-Calais town −1%.
Marck is younger than 68% of compared French towns: a median age of 41.7
Shares of residents by age at the 2023 census.
Age groups · share of residents
Median age of the 3,798 compared French towns
■ Marck 41.7. The median compared French town: 44.
The share of residents aged 15 to 24 is 12%, against 11% in the typical compared French town.
Women and men · all residents
52% women, 48% men
About 94 men for every 100 women. Median share of women: Pas-de-Calais 52.0%, France 51.8%.
One-person households: 21%, a lower share than 99% 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 Pas-de-Calais median and the France median
Living alone · share
Average household size: 2.6 people. The benchmark for one-person households in the typical compared French town: 35%. At 9.7%, the share of single-parent households is in line with the figure in the typical compared French town.
Below 62% of compared French towns: 8.7% of households have no car
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
1.6% of homes are second homes, about the same as in the typical compared French town. In the typical compared French town, households without a car come to 11%. Long tenure is the mark of 25% of households (30 years or more), short tenure of 6.1% (under two years).
The middle resident’s standard of living: €25,410 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 €25,410 a year per consumption unit, lower than in 55% of compared French towns. Below the poverty line: 12.0% of residents.
Marck ranks above 72% of compared French towns on households headed by a manual worker: 17%
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 7.4%, Marck is behind 65% of compared French towns on that count. As a yardstick, 14% of households are headed by a manual worker in the typical compared French town. Census figures put households headed by a retired person at 32% here.
Each household is counted once, by the occupation of its reference person (usually the oldest working adult).
A lower share of immigrants than 99% of compared French towns, at 1.2%
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.
Here 0.4% of residents are foreign nationals, where the figure in the typical compared French town is 4.3%. Against that, 6.5% of residents are immigrants in the typical compared French town. The median compared commune in Pas-de-Calais has 1.7%; immigrants here make up a share lower than in 99% of compared French towns.
INSEE publishes no country of birth or ethnicity by commune in these tables, and the census doesn’t ask about religion.
In Marck, 51% of residents 15 and over are married, more than in 93% 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
Single residents: a quarter of the total. By way of comparison, 43% of residents 15 and over are married in the typical compared French town.
In Marck, 27% of adults out of school hold a higher-education qualification, fewer than in 63% 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 stands at 20%. Against that, 30% of adults out of school hold a higher-education qualification in the typical compared French town.
19th lowest median age among 41 French towns of 10,323 to 10,617
The 40 compared French towns nearest in population, by median age. Hover for each one’s second homes and immigrants; click for its page.
Ages run from 33.5 in Serris to 59.6 in La Londe-les-Maures.
A younger town than 5 of the 6 around it: Marck
The nearest towns of 2,500 or more, colored by median age. Source: INSEE, census 2023.
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 Marck
What is the population of Marck?
10,467 at INSEE’s 2023 census, 3% more than in 2012 (10,175).
How old are Marck’s residents?
The median age is 41.7, younger than 68% of compared French towns. 25% are under 18 and 19% 65 or older.
How many second homes are there in Marck?
70, with occasional dwellings: 1.6% of all homes, against 2.1% for the median compared French town.
How many immigrants live in Marck?
INSEE counts 120 immigrants (born abroad, not French at birth), 1.2% of residents, and 45 foreign nationals (0.4%). The medians of compared French towns are 6.5% and 4.3%.
What is the median income in Marck?
€25,410 a year per consumption unit in 2023 (median of compared French towns €25,970); 12.0% 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 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.