A larger share of couples with children than 97% of compared French towns: 38%
0.2% of households rent social housing (HLM), against 12% in the typical compared French town. Silly-le-Long is home to 1,217 residents in 490 households, by the 2023 Census. Across Silly-le-Long, 3.7% of households have no car. At 4.1%, the share of empty homes is lower than in 87% 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 Silly-le-Long
A town of families
38% of households are couples with children and 7.2% single parents with children; 20% of residents are under 15. Households ↓
Written from INSEE’s census 2023 on this page, against compared French towns.
From 2012 to 2023, 57% of compared French towns grew faster than Silly-le-Long: +3%
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
The years 2012 to 2017 brought −2%; 2017 to 2023, +5%.
Silly-le-Long ranks below 85% of compared French towns on residents aged 65 and over: 17%
Shares of residents by age at the 2023 census.
Age groups · share of residents
Median age of the 3,798 compared French towns
■ Silly-le-Long 40.6. The median compared French town: 44.
The median age in Silly-le-Long is 40.6, lower than in 76% of compared French towns. By way of comparison, 22% of residents are 65 or over in the typical compared French town. Across Silly-le-Long, one in ten residents are 15 to 24.
Women and men · all residents
51% women, 49% men
About an even split. Median share of women: Oise 51.7%, France 51.8%.
One-person households: 26%, a lower share than 92% 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
With single-parent households at 7.2%, Silly-le-Long is behind 88% of compared French towns on that count. Against that, 35% of households are one person living alone in the typical compared French town. On average, 2.5 people share a household.
Flats: 12%, a lower share than 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
Households that moved in under two years ago: 9.5%. Those in their home 30 years or more: 24%. Compared with other places, second homes are scarce here: 1.9%, fewer than in 53% of compared French towns.
A median of €30,680 a year per consumption unit
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 €30,680 a year per consumption unit, higher than in 87% of compared French towns.
Silly-le-Long sits above 87% of compared French towns for households headed by a manager or professional (20%)
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
One in ten households are headed by a manual worker; in the typical compared French town the figure is 14%. Few places have so few households headed by a retired person: 27% here, fewer than in 78% of compared French towns. As a reference point, 9.4% of households are headed by a manager or professional in the typical compared French town.
Each household is counted once, by the occupation of its reference person (usually the oldest working adult).
2.5% of residents are foreign nationals, fewer than in 71% 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.
Immigrants make up a share lower than in 52% of compared French towns; the median compared commune in Oise has 7.4%. In the typical compared French town, the share of foreign nationals is 4.3%. 6.3% of residents are immigrants.
INSEE publishes no country of birth or ethnicity by commune in these tables, and the census doesn’t ask about religion.
Married residents make up 46% in Silly-le-Long, more than in 72% 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
25% of residents 15 and over are single in the typical compared French town, against 24% in Silly-le-Long. In the typical compared French town, the share of married residents is 43%.
Adults with no qualification: 17%, a lower share than 62% 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
Graduates of higher education make up 28%, against 30% in the typical compared French town. Set beside that, nearly a fifth of adults out of school have no qualification in the typical compared French town.
41 French towns of 1,217 to 2,582 people: this is the 4th youngest
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.
No nearby town is as old as Silly-le-Long
The nearest towns of 2,500 or more, colored by median age. Source: INSEE, census 2023.
| Town | Median age | 65+ | Second homes | Immigrants |
|---|---|---|---|---|
| Silly-le-Long | 40.6 | 17% | 1.9% | 6.3% |
| Le Plessis-Belleville 4,009 · 1.5 mi | 37.2 | 14% | 0.9% | 13% |
| Saint-Pathus 6,479 · 2.1 mi | 37.4 | 12% | 0.8% | 7.5% |
| Nanteuil-le-Haudouin 4,258 · 2.5 mi | 37.1 | 13% | 1% | 7.4% |
| Saint-Soupplets 3,542 · 4.7 mi | 39.3 | 17% | 1.6% | 8.5% |
| Othis 6,717 · 5.8 mi | 39.5 | 14% | 0.7% | 8.6% |
| Dammartin-en-Goële 11,907 · 5.8 mi | 34.8 | 10% | 0.9% | 12% |
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 Silly-le-Long
What is the population of Silly-le-Long?
1,217 at INSEE’s 2023 census, 3% more than in 2012 (1,182).
How old are Silly-le-Long’s residents?
The median age is 40.6, younger than 76% of compared French towns. 25% are under 18 and 17% 65 or older.
How many second homes are there in Silly-le-Long?
10, with occasional dwellings: 1.9% of all homes, against 2.1% for the median compared French town.
How many immigrants live in Silly-le-Long?
INSEE counts 77 immigrants (born abroad, not French at birth), 6.3% of residents, and 31 foreign nationals (2.5%). The medians of compared French towns are 6.5% and 4.3%.
What is the median income in Silly-le-Long?
€30,680 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.