Only 2.3% of households are headed by a manager or professional in Serqueux
Set against 30% in the typical compared French town, 5.8% of homes are flats in Serqueux. The 2023 Census counted 943 residents in 430 households. About one in 21: that is how common single-parent households are in Serqueux (4.7%). Few places have so few households in social housing: 8.2% here, fewer than in 70% of compared French towns.
Throughout this page, the Seine-Maritime 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 Serqueux
Fewer residents than in 2012
Serqueux had 1,000 residents at the 2012 census and 943 in 2023, down 6%: slower growth than in 90% of compared French towns. Population ↓
An older town
Half of Serqueux’s residents are under 50.9 and half over; the median of compared French towns is 44. 27% are 65 or older (France median 22%), 8% 80 or older. Ages ↓
Written from INSEE’s census 2023 on this page, against compared French towns.
−6% since 2012: slower than 90% 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
From 2012 to 2017 the population moved −1%, and from 2017 to 2023 −5%; the median compared French town changed +5% and the median Seine-Maritime town ±0%.
Older than 86% of compared French towns: half of Serqueux is over 50.9
Shares of residents by age at the 2023 census.
Age groups · share of residents
Median age of the 3,798 compared French towns
■ Serqueux 50.9. The median compared French town: 44.
Set against 22% in the typical compared French town, 27% of residents are 65 or over in Serqueux. Residents aged 15 to 24: a tenth of the total.
Women and men · all residents
54% women, 46% men
About 86 men for every 100 women. Median share of women: Seine-Maritime 52.8%, France 51.8%. Women live longer than men, so towns with many older residents have more women.
33% of households are one person living alone, fewer than in 59% 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 Seine-Maritime median and the France median
Living alone · share
A household here holds 2.2 people on average. One-person households make up 35% in the typical compared French town. Couples with children are about as common here as in the typical compared French town: 25%.
Fewer second homes than 78% of compared French towns: 1.1%
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
Turnover: nearly one in ten households moved in less than two years ago, and 23% have lived in their home 30 years or more. Serqueux has more empty homes than two thirds of compared French towns, at 8.3%. Second homes: 2.1% in the typical compared French town, for comparison. At 11%, the share of households without a car is in line with the figure in the typical compared French town.
Half of residents have a standard of living above €22,460 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.
Half of residents live in households above €22,460 a year per consumption unit and half below; the level is lower than in 86% of compared French towns.
45% of households are headed by a retired person, more than in 93% 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
Households headed by a manual worker: 23% here and 14% in the typical compared French town. Typically, 32% of households are headed by a retired person in the typical compared French town.
Each household is counted once, by the occupation of its reference person (usually the oldest working adult).
1% of residents are immigrants, below 99% of compared French towns
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.
Against a figure of 4.3% in the typical compared French town, the share of foreign nationals in Serqueux comes in at 0.5%. Elsewhere, 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.
Only 22% of residents 15 and over are single in Serqueux
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
Married residents: 48% here and 43% in the typical compared French town. For single residents, the comparison in the typical compared French town is 25%.
Graduates of higher education make up 11% in Serqueux, less than in 99% 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
Here 33% of adults out of school have no qualification, where the figure in the typical compared French town is 19%. The wider picture: 30% of adults out of school hold a higher-education qualification in the typical compared French town.
The 11th oldest of 41 French towns of 943 to 2,582 people
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).
Around Serqueux, 3 of 5 towns have a higher median age
The nearest towns of 2,500 or more, colored by median age. Source: INSEE, census 2023.
| Town | Median age | 65+ | Second homes | Immigrants |
|---|---|---|---|---|
| Serqueux | 50.9 | 27% | 1.1% | 1% |
| Forges-les-Eaux 3,642 · 1.3 mi | 55.9 | 36% | 2.7% | 2.1% |
| Neufchâtel-en-Bray 4,662 · 8.4 mi | 51.7 | 34% | 1.3% | 1.2% |
| Buchy 2,815 · 8.7 mi | 45.9 | 25% | 1.8% | 0.9% |
| Gournay-en-Bray 5,723 · 13 mi | 51.9 | 31% | 1.4% | 4.4% |
| Quincampoix 3,103 · 17.6 mi | 49.7 | 24% | 0.5% | 2% |
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 Serqueux
What is the population of Serqueux?
943 at INSEE’s 2023 census, 6% fewer than in 2012 (1,000).
How old are Serqueux’s residents?
The median age is 50.9, older than 86% of compared French towns. 20% are under 18 and 27% 65 or older.
How many second homes are there in Serqueux?
5, with occasional dwellings: 1.1% of all homes, against 2.1% for the median compared French town.
How many immigrants live in Serqueux?
INSEE counts 10 immigrants (born abroad, not French at birth), 1% of residents, and 5 foreign nationals (0.5%). The medians of compared French towns are 6.5% and 4.3%.
What is the median income in Serqueux?
€22,460 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.