Thoiry ranks below 96% of compared French towns on residents aged 65 and over: 13%
Households without a car: 4.7%, below 90% of compared French towns. Locally, nearly a fifth of households are headed by a retired person. Couples with children are more common here than in 86% of compared French towns. Thoiry counted 6,569 residents and 2,830 households at the 2023 Census.
Throughout this page, the Ain 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 Thoiry
Immigrants
INSEE counts 2,200 immigrants in Thoiry (people born abroad who weren’t French at birth, whatever their nationality now): 34% of residents, against 8.5% for the median compared commune in Ain. 29% are foreign nationals. Immigrants and foreign nationals ↓
Many graduates
51% of residents 15 and over who have left education hold a diploma above the bac, 27% a master’s or more (bac+5). Qualifications ↓
Written from INSEE’s census 2023 on this page, against compared French towns.
A +15% change since 2012: Thoiry grew faster than 81% 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 median compared French town changed +5% over the same years, the median Ain town +13%.
Younger than 84% of compared French towns: half of Thoiry is under 39
Shares of residents by age at the 2023 census.
Age groups · share of residents
Median age of the 3,798 compared French towns
■ Thoiry 39. The median compared French town: 44.
In the typical compared French town, just over one in ten residents are 15 to 24; in Thoiry, 9.5%.
Women and men · all residents
50% women, 50% men
About an even split. Median share of women: Ain 51.0%, France 51.8%.
Single-parent households make up 8% in Thoiry, less than in 80% 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 Ain median and the France median
Living alone · share
With one-person households at 32%, Thoiry is behind 66% of compared French towns on that count. The share of single-parent households in the typical compared French town is 10%. Average household size: 2.3 people.
A town of second homes: 6.1% of its 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
Recent arrivals (under two years) make up 13% of households; long-stayers (30 years or more) 12%. Fewer empty homes than in 86% of compared French towns: 4.1%. For second homes, the comparison in the typical compared French town is 2.1%. The share of flats tops just over two thirds of compared French towns: 43%.
A median standard of living of €43,850 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.
Living standards centre on €43,850 a year per consumption unit: higher than in 99% of compared French towns. Below the poverty threshold: 15.0% of the population.
24% of households are headed by a manager or professional, more than in 93% 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 Thoiry, 11% of households are headed by a manual worker, beside 14% in the typical compared French town. The usual figure: 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).
More immigrants than 99% of compared French towns: 34%
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.
The median compared commune in Ain has 8.5%; immigrants here make up a share higher than in 99% of compared French towns. The comparison figure for immigrants is 6.5% in the typical compared French town. 29% of residents are foreign nationals.
INSEE publishes no country of birth or ethnicity by commune in these tables, and the census doesn’t ask about religion.
Married residents: 50%, a higher share than 92% 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
A quarter of residents 15 and over are single. Married residents make up 43% in the typical compared French town.
Graduates of higher education make up 51% in Thoiry, more than in 93% 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
Where 19% of adults out of school have no qualification in the typical compared French town, Thoiry has 10%. For graduates of higher education, the comparison in the typical compared French town is 30%.
Among 41 French towns of 6,522 to 6,621 people, the 3rd 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.
The youngest is Chasse-sur-Rhône (36.3), the oldest Gueugnon (58).
Every neighbor is younger than Thoiry
The nearest towns of 2,500 or more, colored by median age. Source: INSEE, census 2023.
| Town | Median age | 65+ | Second homes | Immigrants |
|---|---|---|---|---|
| Thoiry | 39 | 13% | 6.1% | 34% |
| Saint-Genis-Pouilly 14,432 · 2.5 mi | 33.9 | 9% | 6.2% | 41% |
| Péron 2,916 · 4.2 mi | 37.1 | 10% | 6.5% | 25% |
| Prévessin-Moëns 9,153 · 5 mi | 36.5 | 10% | 11% | 37% |
| Ségny 2,941 · 6.1 mi | 34.8 | 11% | 4.7% | 30% |
| Ornex 5,082 · 6.1 mi | 37.9 | 12% | 4.8% | 38% |
| Ferney-Voltaire 12,094 · 6.4 mi | 36.7 | 12% | 17% | 46% |
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 Thoiry
What is the population of Thoiry?
6,569 at INSEE’s 2023 census, 15% more than in 2012 (5,733).
How old are Thoiry’s residents?
The median age is 39, younger than 84% of compared French towns. 25% are under 18 and 13% 65 or older.
How many second homes are there in Thoiry?
190, with occasional dwellings: 6.1% of all homes, against 2.1% for the median compared French town.
How many immigrants live in Thoiry?
INSEE counts 2,240 immigrants (born abroad, not French at birth), 34% of residents, and 1,880 foreign nationals (29%). The medians of compared French towns are 6.5% and 4.3%.
What is the median income in Thoiry?
€43,850 a year per consumption unit in 2023 (median of compared French towns €25,970); 15.0% of residents live below the poverty line. 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.