A median age of 54.5: Treis-Sants-en-Ouche is older than 93% of compared French towns
Households in social housing are rarer here than in 99% of compared French towns. There were 580 households in Treis-Sants-en-Ouche at the 2023 Census, home to 1,321 residents. For Treis-Sants-en-Ouche, the census puts flats at 0.6%. In the typical compared French town, 9.4% of households are headed by a manager or professional; locally, 5.1%.
Throughout this page, the Eure 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 Treis-Sants-en-Ouche
An older town
Half of Treis-Sants-en-Ouche’s residents are under 54.5 and half over; the median of compared French towns is 44. 32% are 65 or older (France median 22%), 9.3% 80 or older. Ages ↓
Fewer residents than in 2012
Treis-Sants-en-Ouche had 1,449 residents at the 2012 census and 1,321 in 2023, down 9%: slower growth than in 96% of compared French towns. Population ↓
Written from INSEE’s census 2023 on this page, against compared French towns.
A −9% change since 2012: slower than 96% 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
Medians for comparison: +5% across compared French towns, −1% in Eure. Here the change came as −2% to 2017, then −7% to 2023.
A lower share of residents aged 15 to 24 than 97% of compared French towns, at 7%
Shares of residents by age at the 2023 census.
Age groups · share of residents
Median age of the 3,798 compared French towns
■ Treis-Sants-en-Ouche 54.5. The median compared French town: 44.
In Treis-Sants-en-Ouche, nearly a third of residents are 65 or over, beside 22% in the typical compared French town. On average, 11% of residents are 15 to 24 in the typical compared French town.
Women and men · all residents
51% women, 49% men
About 95 men for every 100 women. Median share of women: Eure 52.5%, France 51.8%.
Single-parent households make up 7% in Treis-Sants-en-Ouche, less than in 90% 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 Eure median and the France median
Living alone · share
In the typical compared French town, 35% of households are one person living alone; in Treis-Sants-en-Ouche, 33%. Set beside that, 10% of households are single parents in the typical compared French town. Across Treis-Sants-en-Ouche, nearly a fifth of households are couples with children.
8.2% of homes in Treis-Sants-en-Ouche are second homes
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
The share of households without a car trails 87% of compared French towns: 5.1%. Recent arrivals (under two years) make up 6% of households; long-stayers (30 years or more) 31%. Measured more widely, 2.1% of homes are second homes in the typical compared French town.
The median resident lives on €26,980 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 €26,980 a year per consumption unit, higher than in 61% of compared French towns.
43% of households are headed by a retired person, more than in 90% 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
In Treis-Sants-en-Ouche, 15% of households are headed by a manual worker. 5.1% of the town’s households are headed by a manager or professional, against 9.4% in the median compared French town; 43% by a retired person (32%).
Each household is counted once, by the occupation of its reference person (usually the oldest working adult).
In Treis-Sants-en-Ouche, 1.2% of residents are foreign nationals, fewer than in 91% 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.
Against a figure of 6.5% in the typical compared French town, the share of immigrants in Treis-Sants-en-Ouche comes in at 2.9%. That is lower than in 83% of compared French towns; the median compared commune in Eure has 4.6%. Elsewhere, 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.
A lower share of single residents than 98% of compared French towns, at 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
Nearly half of residents 15 and over are married; in the typical compared French town the figure is 43%. The comparison figure for single residents is 25% in the typical compared French town.
Above 84% of compared French towns: 27% of adults out of school have no 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
With graduates of higher education at 24%, Treis-Sants-en-Ouche is behind 72% of compared French towns on that count. In the typical compared French town, adults with no qualification come to 19%.
The 7th oldest of 41 French towns of 1,321 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.
Ages run from 37.2 in Villejust to 62.3 in Prayssac.
Every neighbor is younger than Treis-Sants-en-Ouche
The nearest towns of 2,500 or more, colored by median age. Source: INSEE, census 2023.
| Town | Median age | 65+ | Second homes | Immigrants |
|---|---|---|---|---|
| Treis-Sants-en-Ouche | 54.5 | 32% | 8.2% | 2.9% |
| Bernay 9,765 · 2.4 mi | 49.2 | 29% | 4.3% | 4.5% |
| Mesnil-en-Ouche 4,414 · 5.5 mi | 48.5 | 25% | 19% | 2.3% |
| Beaumont-le-Roger 2,769 · 7 mi | 48 | 26% | 5% | 3.3% |
| Brionne 4,185 · 10.1 mi | 45.9 | 27% | 3.9% | 3.1% |
| Le Neubourg 4,199 · 14.3 mi | 52.3 | 33% | 1.8% | 1.7% |
| La Ferté-en-Ouche 2,938 · 15.5 mi | 49.4 | 27% | 17% | 3% |
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 Treis-Sants-en-Ouche
What is the population of Treis-Sants-en-Ouche?
1,321 at INSEE’s 2023 census, 9% fewer than in 2012 (1,449).
How old are Treis-Sants-en-Ouche’s residents?
The median age is 54.5, older than 93% of compared French towns. 17% are under 18 and 32% 65 or older.
How many second homes are there in Treis-Sants-en-Ouche?
56, with occasional dwellings: 8.2% of all homes, against 2.1% for the median compared French town.
How many immigrants live in Treis-Sants-en-Ouche?
INSEE counts 39 immigrants (born abroad, not French at birth), 2.9% of residents, and 16 foreign nationals (1.2%). The medians of compared French towns are 6.5% and 4.3%.
What is the median income in Treis-Sants-en-Ouche?
€26,980 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 9, 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.