Couples with children: 42%, a higher share than 99% of compared French towns
Compared with 11% in the typical compared French town, 1.5% of households have no car here. At 16%, the share of residents aged 65 and over is lower than in 88% of compared French towns. Marcq is home to 802 residents in 330 households, by the 2023 Census. The share of flats stands at 5.4%.
Throughout this page, the Yvelines 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 Marcq
A town of families
42% of households are couples with children and 4.5% single parents with children; 18% of residents are under 15. Households ↓
Many graduates
52% of residents 15 and over who have left education hold a diploma above the bac, 17% a master’s or more (bac+5). Qualifications ↓
Written from INSEE’s census 2023 on this page, against compared French towns.
A +11% change since 2012: Marcq grew faster than 72% 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 Yvelines town changed +7% and the median compared French town +5%.
Half of Marcq is under 43.1, younger than 57% 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
■ Marcq 43.1. The median compared French town: 44.
Census figures put residents aged 15 to 24 at 11% in Marcq.
Women and men · all residents
49% women, 51% men
About 105 men for every 100 women. Median share of women: Yvelines 51.6%, France 51.8%.
In Marcq, 24% of households are one person living alone, fewer than in 96% 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 Yvelines median and the France median
Living alone · share
Compared with 10% in the typical compared French town, 4.5% of households are single parents here. The comparison figure for one-person households is 35% in the typical compared French town. The average household has 2.4 people.
Below 97% of compared French towns: 1.8% 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
Of all households, 8.1% moved in during the last two years and 19% have stayed three decades or more. 4.6% of homes stand empty, fewer than in 81% of compared French towns. As a reference point, just over one in ten households rent social housing (HLM) in the typical compared French town. Where 2.1% of homes are second homes in the typical compared French town, Marcq has 3.6%.
A median standard of living of €35,950 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.
At €35,950 a year per consumption unit, the median standard of living here is higher than in 96% of compared French towns.
Households headed by a manager or professional make up 25% in Marcq, more than in 94% 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
14% of households are headed by a manual worker in the typical compared French town, against 6% in Marcq. The wider picture: 9.4% of households are headed by a manager or professional in the typical compared French town. On households headed by a retired person, Marcq sits lower than 83% of compared French towns: 25%.
Each household is counted once, by the occupation of its reference person (usually the oldest working adult).
Below 60% of compared French towns: 5.3% 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.
Locally, 4.4% of residents are foreign nationals. On average, 6.5% of residents are immigrants 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: 50%, a higher share than 90% 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
Set against 25% in the typical compared French town, nearly a quarter of residents 15 and over are single in Marcq. Married residents: 43% in the typical compared French town, for comparison.
More graduates of higher education than 94% of compared French towns: 52%
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
In the typical compared French town, the share of adults with no qualification is 19%; Marcq has 9.3%. The usual figure: 30% of adults out of school hold a higher-education qualification in the typical compared French town.
Ranked by age, 12th youngest 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.
Villejust is the youngest (37.2); Prayssac the oldest (62.3).
Marcq and its 6 nearest towns: 1 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 |
|---|---|---|---|---|
| Marcq | 43.1 | 16% | 3.6% | 5.3% |
| Beynes 7,704 · 2.9 mi | 42.9 | 19% | 1.2% | 6.3% |
| Maule 6,083 · 4 mi | 43.6 | 19% | 1.5% | 9.4% |
| Garancières 2,621 · 4.1 mi | 42.6 | 18% | 6% | 6.1% |
| Villiers-Saint-Frédéric 3,395 · 4.3 mi | 40.5 | 18% | 1.9% | 8.3% |
| La Queue-les-Yvelines 2,629 · 4.5 mi | 41.3 | 21% | 2.8% | 9.4% |
| Neauphle-le-Château 3,250 · 5 mi | 42.7 | 18% | 3.3% | 7.7% |
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 Marcq
What is the population of Marcq?
802 at INSEE’s 2023 census, 11% more than in 2012 (723).
How old are Marcq’s residents?
The median age is 43.1, younger than 57% of compared French towns. 23% are under 18 and 16% 65 or older.
How many second homes are there in Marcq?
13, with occasional dwellings: 3.6% of all homes, against 2.1% for the median compared French town.
How many immigrants live in Marcq?
INSEE counts 42 immigrants (born abroad, not French at birth), 5.3% of residents, and 35 foreign nationals (4.4%). The medians of compared French towns are 6.5% and 4.3%.
What is the median income in Marcq?
€35,950 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 8, 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.