Below 99% of compared French towns: 1% of homes are flats
Against a figure of 11% in the typical compared French town, the share of households without a car in Serans comes in at 5.6%. Single-parent households are rarer here than in 98% of compared French towns. At the 2023 Census, 184 people lived in the town, in 83 households. On the census count, nearly one in ten residents are 15 to 24.
Throughout this page, the 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.
What stands out about the people of Serans
One home in seven is a second home
The census counted 14 second homes and occasional dwellings in Serans, 15% of its 97 homes: higher than in 91% of compared French towns. 100% of them are houses. Their owners live elsewhere, so they aren’t in the population figures on this page. Homes & cars ↓
Fewer residents than in 2012
Serans had 242 residents at the 2012 census and 184 in 2023, down 24%: slower growth than in 99% of compared French towns. Population ↓
An older town
Half of Serans’ residents are under 51.8 and half over; the median of compared French towns is 44. 26% are 65 or older (France median 22%), 4.6% 80 or older. Ages ↓
Written from INSEE’s census 2023 on this page, against compared French towns.
A larger share of second homes than 91% of compared French towns: 15%
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
Empty homes are rarer here than in 99% of compared French towns. Of all households, 6.7% moved in during the last two years and 36% have stayed three decades or more. Typically, 2.1% of homes are second homes in the typical compared French town. Car-free households: one in 18, where the median compared French town has 11%.
Since 2012, Serans has changed by −24%, slower than 99% 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 same years the median compared French town changed +5%, the median Oise town +2%. From 2012 to 2017 the change was −8%; from 2017 to 2023, −17%.
Half of Serans is over 51.8, older than 88% 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
■ Serans 51.8. The median compared French town: 44.
By its share of residents aged 65 and over (26%), Serans is above nearly three quarters of compared French towns.
Women and men · all residents
52% women, 48% men
About 91 men for every 100 women. Median share of women: Oise 51.7%, France 51.8%. Women live longer than men, so towns with many older residents have more women.
22% of households are one person living alone, fewer than in 98% 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 Oise median and the France median
Living alone · share
Set against 25% in the typical compared French town, 28% of households are couples with children in Serans. The average household has 2.2 people. The wider picture: just over a third of households are one person living alone in the typical compared French town.
A median standard of living of €28,000 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 Serans’ residents live in households with a standard of living below €28,000 a year per consumption unit, and half above: higher than in 71% of compared French towns.
44% of households are headed by a retired person, a share 92% of compared French towns don’t reach
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
Set against 9.4% in the typical compared French town, 5.6% of households are headed by a manager or professional in Serans. Few places have so few households headed by a manual worker: 11% here, fewer than in 70% of compared French towns. Measured more widely, nearly a third 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).
Serans ranks below 78% of compared French towns on foreign nationals: 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.
4.6% of residents are immigrants (typical compared French town: 6.5%). Set beside that, 4.3% of residents are foreign nationals in the typical compared French town. The median compared commune in Oise has 7.4%; immigrants here make up a share lower than in 68% 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.
A smaller share of single residents than 99% of compared French towns: 17%
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
Just over half of residents 15 and over are married, against 43% in the typical compared French town. The comparison figure for single residents is 25% in the typical compared French town.
Fewer adults with no qualification than 72% of compared French towns: 15%
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, 30% of adults out of school hold a higher-education qualification; in Serans, 33%. Measured more widely, 19% of adults out of school have no qualification in the typical compared French town.
The 9th oldest of 41 French towns of 184 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).
No nearby town is as old as Serans
The nearest towns of 2,500 or more, colored by median age. Source: INSEE, census 2023.
| Town | Median age | 65+ | Second homes | Immigrants |
|---|---|---|---|---|
| Serans | 51.8 | 26% | 15% | 4.6% |
| Magny-en-Vexin 5,779 · 2.9 mi | 41.6 | 18% | 1.5% | 11% |
| Chaumont-en-Vexin 3,338 · 6 mi | 44.2 | 25% | 3.4% | 7.5% |
| Gisors 12,410 · 6.8 mi | 43.3 | 22% | 2.3% | 9.2% |
| Marines 3,594 · 7.3 mi | 39.7 | 17% | 1.9% | 6.4% |
| Vexin-sur-Epte 6,015 · 11.2 mi | 42.7 | 19% | 12% | 3.8% |
| Sérifontaine 2,784 · 11.8 mi | 42.7 | 20% | 1.4% | 5% |
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 Serans
What is the population of Serans?
184 at INSEE’s 2023 census, 24% fewer than in 2012 (242).
How old are Serans’ residents?
The median age is 51.8, older than 88% of compared French towns. 16% are under 18 and 26% 65 or older.
How many second homes are there in Serans?
14, with occasional dwellings: 15% of all homes, against 2.1% for the median compared French town.
How many immigrants live in Serans?
INSEE counts 8 immigrants (born abroad, not French at birth), 4.6% of residents, and 4 foreign nationals (2%). The medians of compared French towns are 6.5% and 4.3%.
What is the median income in Serans?
€28,000 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 October 30, 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.