A smaller share of flats than 94% of compared French towns: 6.1%
With a median age of 50.1, Le Plessis-Brion is older than 83% of compared French towns. About one in 13: that is how common single-parent households are in Le Plessis-Brion (7.5%). There were 610 households in the town at the 2023 Census, home to 1,298 residents. Compared with 32% in the typical compared French town, 38% of households are headed by a retired person here.
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 Le Plessis-Brion
Fewer residents than in 2012
Le Plessis-Brion had 1,411 residents at the 2012 census and 1,298 in 2023, down 8%: slower growth than in 95% of compared French towns. Population ↓
Written from INSEE’s census 2023 on this page, against compared French towns.
From 2012 to 2023, 95% of compared French towns grew faster than Le Plessis-Brion: −8%
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%.
Le Plessis-Brion sits below 91% of compared French towns for residents aged 15 to 24 (8.2%)
Shares of residents by age at the 2023 census.
Age groups · share of residents
Median age of the 3,798 compared French towns
■ Le Plessis-Brion 50.1. The median compared French town: 44.
27% of residents are 65 or over (typical compared French town: 22%). The usual figure: 11% of residents are 15 to 24 in the typical compared French town.
Women and men · all residents
50% women, 50% men
About an even split. Median share of women: Oise 51.7%, France 51.8%.
A lower share of one-person households than 68% of compared French towns, at 32%
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
25% of households are couples with children in the typical compared French town, against 27% in Le Plessis-Brion. On average, 35% of households are one person living alone in the typical compared French town. A household here holds 2.1 people on average.
Le Plessis-Brion sits below 79% of compared French towns for households without a car (6.1%)
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
In Le Plessis-Brion, 4.6% of homes stand empty, beside 6.7% in the typical compared French town. Census figures put second homes at 0.8% in the town. Compared with other places, households in social housing are scarce here: 7.1%, fewer than in 76% of compared French towns. As a reference point, 11% of households have no car in the typical compared French town.
A median standard of living of €28,750 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 €28,750 a year per consumption unit, higher than in 77% of compared French towns.
10% of households are headed by a manager or professional, more than in 53% 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
Households headed by a manual worker make up about one in seven here (14%). For comparison, 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).
2.6% of residents are immigrants, fewer than in 86% 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.
In the typical compared French town, 4.3% of residents are foreign nationals; in Le Plessis-Brion, 1.5%. The share of immigrants in the typical compared French town is 6.5%. The median compared commune in Oise has 7.4%; immigrants here make up a share lower than in 86% 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.
Fewer single residents than 88% of compared French towns: 21%
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
Compared with 43% in the typical compared French town, 46% of residents 15 and over are married here. Single residents make up 25% in the typical compared French town.
Adults with no qualification make up 16% in Le Plessis-Brion, less than in 70% 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
In Le Plessis-Brion, a third of adults out of school hold a higher-education qualification, beside 30% in the typical compared French town. Measured more widely, nearly a fifth of adults out of school have no qualification in the typical compared French town.
14th highest median age among 41 French towns of 1,298 to 2,582
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 Villejust (37.2), the youngest, and Prayssac (62.3), the oldest.
Every neighbor is younger than Le Plessis-Brion
The nearest towns of 2,500 or more, colored by median age. Source: INSEE, census 2023.
| Town | Median age | 65+ | Second homes | Immigrants |
|---|---|---|---|---|
| Le Plessis-Brion | 50.1 | 27% | 0.8% | 2.6% |
| Thourotte 4,463 · 1.2 mi | 47.2 | 27% | 0.8% | 6.8% |
| Longueil-Annel 2,586 · 1.3 mi | 42 | 20% | 1% | 6.6% |
| Choisy-au-Bac 3,449 · 1.7 mi | 44.9 | 25% | 2.3% | 6.6% |
| Ribécourt-Dreslincourt 3,871 · 3.8 mi | 40.5 | 18% | 1.2% | 7.3% |
| Margny-lès-Compiègne 8,677 · 4.2 mi | 37.8 | 16% | 2% | 14% |
| Compiègne 40,761 · 5.2 mi | 37.6 | 19% | 2.2% | 17% |
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 Le Plessis-Brion
What is the population of Le Plessis-Brion?
1,298 at INSEE’s 2023 census, 8% fewer than in 2012 (1,411).
How old are Le Plessis-Brion’s residents?
The median age is 50.1, older than 83% of compared French towns. 19% are under 18 and 27% 65 or older.
How many second homes are there in Le Plessis-Brion?
5, with occasional dwellings: 0.8% of all homes, against 2.1% for the median compared French town.
How many immigrants live in Le Plessis-Brion?
INSEE counts 33 immigrants (born abroad, not French at birth), 2.6% of residents, and 19 foreign nationals (1.5%). The medians of compared French towns are 6.5% and 4.3%.
What is the median income in Le Plessis-Brion?
€28,750 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.