Blancfossé: 45% of households are couples with children, above 99% of compared French towns
Households in social housing make up 1.9%, against 12% in the typical compared French town. Blancfossé had 143 residents in 54 households at the 2023 Census. Here, 18% of households are headed by a retired person. 15% of residents are 15 to 24, more than in 95% of compared French towns.
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 Blancfossé
A town of families
45% of households are couples with children and 0% single parents with children; 22% of residents are under 15. Households ↓
A young town
Half of Blancfossé’s residents are under 36 and half over; the median of compared French towns is 44. 22% are under 15 and 16% are 65 or older. Ages ↓
Empty homes
The census found 8 homes empty (12%): for sale, to let, awaiting work or simply unused. Homes & cars ↓
Written from INSEE’s census 2023 on this page, against compared French towns.
Faster growth than 72% of compared French towns: Blancfossé changed by +11% since 2012
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 +13%, and from 2017 to 2023 −2%; the median compared French town changed +5% and the median Oise town +2%.
Younger than 94% of compared French towns: half of Blancfossé is under 36
Shares of residents by age at the 2023 census.
Age groups · share of residents
Median age of the 3,798 compared French towns
■ Blancfossé 36. The median compared French town: 44.
In the typical compared French town, just over a fifth of residents are 65 or over; in Blancfossé, 16%.
Women and men · all residents
46% women, 54% men
About 115 men for every 100 women. Median share of women: Oise 51.7%, France 51.8%.
A smaller share of one-person households than 88% of compared French towns: 27%
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
The average household has 2.6 people. Single-parent households are rarer here than in 99% of compared French towns. Against that, just over a third of households are one person living alone in the typical compared French town.
Only 1.5% of homes are flats in Blancfossé
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
Where 6.7% of homes stand empty in the typical compared French town, Blancfossé has 12%. At 5.6%, the share of households without a car is lower than in 83% of compared French towns. Elsewhere, 30% of homes are flats in the typical compared French town. 4.6% of homes are second homes, or about one in 22.
The middle resident’s standard of living: €22,080 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.
Per consumption unit, half of residents live on more than €22,080 a year: lower than in 88% of compared French towns.
A higher share of households headed by a manual worker than 75% of compared French towns, at 18%
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 manager or professional are rarer here than in 99% of compared French towns. Measured more widely, 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).
Fewer immigrants than 99% of compared French towns: 0.7%
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.
Set against 4.3% in the typical compared French town, 0.7% of residents are foreign nationals in Blancfossé. The comparison figure for immigrants is 6.5% 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.
More single residents than 81% of compared French towns: 31%
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 43% in the typical compared French town, two in five residents 15 and over are married in Blancfossé. The benchmark for single residents in the typical compared French town: 25%.
Below 90% of compared French towns: 18% of adults out of school hold a higher-education qualification
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 27% of adults out of school have no qualification, where the figure in the typical compared French town is 19%. Measured more widely, 30% of adults out of school hold a higher-education qualification in the typical compared French town.
The youngest of 41 French towns of 143 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.
At the ends of the range sit Blancfossé (36), the youngest, and Prayssac (62.3), the oldest.
Blancfossé and its 6 nearest towns: 5 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 |
|---|---|---|---|---|
| Blancfossé | 36 | 16% | 4.6% | 0.7% |
| Breteuil 4,222 · 4.7 mi | 42.7 | 23% | 1.3% | 2.8% |
| Crèvecœur-le-Grand 3,462 · 6.2 mi | 43.7 | 24% | 1.2% | 1.9% |
| Ailly-sur-Noye 2,648 · 10.2 mi | 45.3 | 25% | 1.2% | 1.2% |
| Grandvilliers 2,786 · 11.3 mi | 51.1 | 31% | 2% | 2.6% |
| Saleux 2,739 · 14.1 mi | 43.7 | 22% | 0.9% | 3.8% |
| Salouël 4,179 · 14.7 mi | 32.5 | 19% | 1% | 3.1% |
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 Blancfossé
What is the population of Blancfossé?
143 at INSEE’s 2023 census, 11% more than in 2012 (129).
How old are Blancfossé’s residents?
The median age is 36, younger than 94% of compared French towns. 26% are under 18 and 16% 65 or older.
How many second homes are there in Blancfossé?
3, with occasional dwellings: 4.6% of all homes, against 2.1% for the median compared French town.
How many immigrants live in Blancfossé?
INSEE counts 1 immigrants (born abroad, not French at birth), 0.7% of residents, and 1 foreign nationals (0.7%). The medians of compared French towns are 6.5% and 4.3%.
What is the median income in Blancfossé?
€22,080 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.