Below 99% of compared French towns: 0.2% of households rent social housing (HLM)
In Seugy, 16% of households are headed by a manager or professional, beside 9.4% in the typical compared French town. 26% of households are one person living alone, a lower share than in 92% of compared French towns. At the 2023 Census, 1,044 people lived in the town, in 450 households. Residents aged 65 and over come to 19% in the town, about two in ten.
Throughout this page, the Val-d'Oise 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.
Slower than most: +2% since 2012, behind 60% 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
Older than 65% of compared French towns: half of Seugy is over 46.2
Shares of residents by age at the 2023 census.
Age groups · share of residents
Median age of the 3,798 compared French towns
■ Seugy 46.2. The median compared French town: 44.
The share of residents aged 15 to 24 tops just over three quarters of compared French towns: 12%.
Women and men · all residents
50% women, 50% men
About an even split. Median share of women: Val-d'Oise 51.5%, France 51.8%.
Seugy sits above 71% of compared French towns for couples with children (29%)
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 Val-d'Oise median and the France median
Living alone · share
In the typical compared French town, 10% of households are single parents; in Seugy, 8%. Across the comparison, 25% of households are couples with children in the typical compared French town. Households here average 2.3 people each.
5.6% of households have no car, fewer than in 83% 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
Second homes make up 1.5%, close to the figure in the typical compared French town. 18% of homes are flats, a lower share than in 72% of compared French towns. The usual figure: 11% of households have no car in the typical compared French town. For Seugy, the census puts empty homes at 5.1%.
A typical living standard of €32,930 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 €32,930 a year per consumption unit, higher than in 93% of compared French towns.
A lower share of households headed by a manual worker than 87% of compared French towns, at 8.1%
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
For Seugy, the census puts households headed by a retired person at 31%. On average, 14% of households are headed by a manual worker in the typical compared French town.
Each household is counted once, by the occupation of its reference person (usually the oldest working adult).
Seugy: 7.6% of residents are immigrants, above 58% 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.
5% of residents are foreign nationals, or about one in 20. The benchmark for immigrants in the typical compared French town: 6.5%.
INSEE publishes no country of birth or ethnicity by commune in these tables, and the census doesn’t ask about religion.
A larger share of married residents than 95% of compared French towns: 51%
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
In Seugy, nearly a quarter of residents 15 and over are single, beside 25% in the typical compared French town. The benchmark for married residents in the typical compared French town: 43%.
A lower share of adults with no qualification than 88% of compared French towns, at 12%
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 Seugy, 38% of adults out of school hold a higher-education qualification, beside 30% in the typical compared French town. The usual figure: 19% of adults out of school have no qualification in the typical compared French town.
The 18th oldest of 41 French towns of 1,044 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.
Ages run from 37.2 in Villejust to 62.3 in Prayssac.
Nearby, 1 of 6 towns have older populations than Seugy
The nearest towns of 2,500 or more, colored by median age. Source: INSEE, census 2023.
| Town | Median age | 65+ | Second homes | Immigrants |
|---|---|---|---|---|
| Seugy | 46.2 | 19% | 1.5% | 7.6% |
| Viarmes 5,558 · 1.1 mi | 42.8 | 20% | 1% | 6.8% |
| Luzarches 5,008 · 1.3 mi | 40.7 | 17% | 1.9% | 9% |
| Chaumontel 3,332 · 1.6 mi | 44.8 | 21% | 2% | 9.9% |
| Asnières-sur-Oise 3,127 · 1.7 mi | 40.1 | 16% | 4.3% | 5.8% |
| Saint-Martin-du-Tertre 2,689 · 2.5 mi | 38.8 | 16% | 0.9% | 7% |
| Lamorlaye 9,082 · 3 mi | 48.3 | 25% | 4.3% | 10% |
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 Seugy
What is the population of Seugy?
1,044 at INSEE’s 2023 census, 2% more than in 2012 (1,021).
How old are Seugy’s residents?
The median age is 46.2, older than 65% of compared French towns. 20% are under 18 and 19% 65 or older.
How many second homes are there in Seugy?
7, with occasional dwellings: 1.5% of all homes, against 2.1% for the median compared French town.
How many immigrants live in Seugy?
INSEE counts 79 immigrants (born abroad, not French at birth), 7.6% of residents, and 52 foreign nationals (5%). The medians of compared French towns are 6.5% and 4.3%.
What is the median income in Seugy?
€32,930 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 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.