Households in social housing: 0.8%, a lower share than 99% of compared French towns
The figure for one-person households is 27% in Bailly and 35% in the typical compared French town. 599 residents in 260 households: that is Bailly at the 2023 Census. Households without a car: 4.6% of the total. The median age locally is 47, higher than in 69% 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 Bailly
A town of families
35% of households are couples with children and 2% single parents with children; 16% of residents are under 15. Households ↓
Fewer residents than in 2012
Bailly had 650 residents at the 2012 census and 599 in 2023, down 8%: slower growth than in 94% of compared French towns. Population ↓
Written from INSEE’s census 2023 on this page, against compared French towns.
Bailly changed by −8% from 2012 to 2023, slower than 94% 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
The years 2012 to 2017 brought −2%; 2017 to 2023, −6%.
Below 73% of compared French towns: 9.5% of residents are 15 to 24
Shares of residents by age at the 2023 census.
Age groups · share of residents
Median age of the 3,798 compared French towns
■ Bailly 47. The median compared French town: 44.
Few places have so few residents aged 65 and over: 22% here, fewer than in 53% of compared French towns. Against that, 11% of residents are 15 to 24 in the typical compared French town.
Women and men · all residents
48% women, 52% men
About 110 men for every 100 women. Median share of women: Oise 51.7%, France 51.8%.
Bailly ranks above 92% of compared French towns on couples with children: 35%
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
Households here average 2.3 people each. 2% of households are single parents, a lower share than in 99% of compared French towns. The wider picture: a quarter of households are couples with children in the typical compared French town.
A lower share of second homes than 89% of compared French towns, at 0.7%
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
Recent arrivals (under two years) make up 7.2% of households; long-stayers (30 years or more) 32%. Flats are rarer here than in 99% of compared French towns. In the typical compared French town, 2.1% of homes are second homes. 4.8% of homes stand empty; in the typical compared French town the figure is 6.7%.
Half of residents have a standard of living above €27,480 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 €27,480 a year: higher than in 66% of compared French towns.
Bailly: 25% of households are headed by a manual worker, above 96% 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
Where 9.4% of households are headed by a manager or professional in the typical compared French town, Bailly has 7.7%. The wider picture: 14% of households are headed by a manual worker in the typical compared French town. Here, a third of households are headed by a retired person.
Each household is counted once, by the occupation of its reference person (usually the oldest working adult).
A smaller share of foreign nationals than 75% of compared French towns: 2.3%
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: 5.2% here and 6.5% in the typical compared French town. The usual figure: 4.3% of residents are foreign nationals 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.
Fewer single residents than 98% of compared French towns: 18%
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
52% of residents 15 and over are married (typical compared French town: 43%). Single residents: 25% in the typical compared French town, for comparison.
Only 19% of adults out of school hold a higher-education qualification in Bailly
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
With adults with no qualification at 22%, Bailly is ahead of 67% of compared French towns on that count. Elsewhere, 30% of adults out of school hold a higher-education qualification in the typical compared French town.
Of 41 French towns its size (599 to 2,582 people), the 15th oldest
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.
Of the 6 towns nearest Bailly, 1 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 |
|---|---|---|---|---|
| Bailly | 47 | 22% | 0.7% | 5.2% |
| Ribécourt-Dreslincourt 3,871 · 2.7 mi | 40.5 | 18% | 1.2% | 7.3% |
| Thourotte 4,463 · 4.5 mi | 47.2 | 27% | 0.8% | 6.8% |
| Longueil-Annel 2,586 · 5.5 mi | 42 | 20% | 1% | 6.6% |
| Choisy-au-Bac 3,449 · 5.8 mi | 44.9 | 25% | 2.3% | 6.6% |
| Noyon 12,971 · 5.9 mi | 41.8 | 22% | 1.4% | 18% |
| Margny-lès-Compiègne 8,677 · 8.6 mi | 37.8 | 16% | 2% | 14% |
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 Bailly
What is the population of Bailly?
599 at INSEE’s 2023 census, 8% fewer than in 2012 (650).
How old are Bailly’s residents?
The median age is 47, older than 69% of compared French towns. 20% are under 18 and 22% 65 or older.
How many second homes are there in Bailly?
2, with occasional dwellings: 0.7% of all homes, against 2.1% for the median compared French town.
How many immigrants live in Bailly?
INSEE counts 31 immigrants (born abroad, not French at birth), 5.2% of residents, and 14 foreign nationals (2.3%). The medians of compared French towns are 6.5% and 4.3%.
What is the median income in Bailly?
€27,480 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.