A lower share of residents aged 15 to 24 than 95% of compared French towns, at 7.6%
In the typical compared French town, 12% of households rent social housing (HLM); in Theys, 3.5%. At 5.7%, the share of single-parent households is lower than in 97% of compared French towns. The 2023 Census counted 2,011 residents in 890 households. The share of households without a car stands at 4.7%.
Throughout this page, the Isère 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 Theys
One home in nine is a second home
The census counted 110 second homes and occasional dwellings in Theys, 11% of its 1,070 homes: higher than in 88% of compared French towns. 83% of them are houses. Their owners live elsewhere, so they aren’t in the population figures on this page. Homes & cars ↓
Many graduates
48% of residents 15 and over who have left education hold a diploma above the bac, 20% a master’s or more (bac+5). Qualifications ↓
Written from INSEE’s census 2023 on this page, against compared French towns.
Theys sits above 88% of compared French towns for second homes (11%)
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 flats trails 85% of compared French towns: 11%. In the last two years, 7.4% of households moved in; at the other end, 27% have stayed 30 years or more. At 6%, the share of empty homes is lower than in three fifths of compared French towns. The benchmark for second homes in the typical compared French town: 2.1%.
+1% since 2012: slower than 66% 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
From 2012 to 2017 the population moved −2%, and from 2017 to 2023 +3%; the median compared French town changed +5% and the median Isère town +7%.
Half of Theys is over 46.6, older than 67% of compared French towns
Shares of residents by age at the 2023 census.
Age groups · share of residents
Median age of the 3,798 compared French towns
■ Theys 46.6. The median compared French town: 44.
In the typical compared French town, the share of residents aged 65 and over is 22%; Theys has 20%.
Women and men · all residents
49% women, 51% men
About an even split. Median share of women: Isère 51.3%, France 51.8%.
Theys ranks below 80% of compared French towns on one-person households: 29%
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 Isère median and the France median
Living alone · share
On average, 2.3 people share a household. The share of one-person households in the typical compared French town is 35%. More couples with children than in 70% of compared French towns: 29%.
Half above, half below €31,360 a year in standard of living
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.
Half of residents live in households above €31,360 a year per consumption unit and half below; the level is higher than in 89% of compared French towns. Residents below the poverty line make up 4.0%.
More households headed by a manager or professional than 86% of compared French towns: 19%
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
Compared with 32% in the typical compared French town, 34% of households are headed by a retired person here. Households headed by a manual worker: 11% of the total. In the typical compared French town, the share of households headed by a manager or professional is 9.4%.
Each household is counted once, by the occupation of its reference person (usually the oldest working adult).
Immigrants make up 3% in Theys, less than in 82% 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.
The median compared commune in Isère has 8%; immigrants here make up a share lower than in just over four fifths of compared French towns. The benchmark for immigrants in the typical compared French town: 6.5%. Foreign nationals: 2.1% of the total.
INSEE publishes no country of birth or ethnicity by commune in these tables, and the census doesn’t ask about religion.
A smaller share of single residents than 92% of compared French towns: 20%
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
Here nearly half of residents 15 and over are married, where the figure in the typical compared French town is 43%. In the typical compared French town, single residents come to 25%.
48% of adults out of school hold a higher-education qualification, a share 92% of compared French towns don’t reach
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
The figure for adults with no qualification is 14% in Theys and 19% in the typical compared French town. Graduates of higher education: 30% in the typical compared French town, for comparison.
41 French towns of 2,011 to 2,582 people: this is the 18th 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.
Villejust is the youngest (37.2); Prayssac the oldest (62.3).
Theys is younger than 2 of its 6 nearest neighbors
The nearest towns of 2,500 or more, colored by median age. Source: INSEE, census 2023.
| Town | Median age | 65+ | Second homes | Immigrants |
|---|---|---|---|---|
| Theys | 46.6 | 20% | 11% | 3% |
| Froges 3,285 · 4.5 mi | 47.6 | 24% | 0.6% | 6.5% |
| Le Touvet 3,116 · 4.6 mi | 44.6 | 19% | 3.5% | 3.7% |
| Crêts en Belledonne 3,470 · 5.1 mi | 42.3 | 17% | 4.5% | 5.2% |
| Crolles 8,609 · 5.9 mi | 45.9 | 21% | 0.7% | 7.5% |
| Villard-Bonnot 7,509 · 6.4 mi | 40.9 | 18% | 1% | 7.3% |
| Bernin 3,334 · 6.9 mi | 47.7 | 25% | 1.4% | 5.7% |
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 Theys
What is the population of Theys?
2,011 at INSEE’s 2023 census, 1% more than in 2012 (1,991).
How old are Theys’ residents?
The median age is 46.6, older than 67% of compared French towns. 21% are under 18 and 20% 65 or older.
How many second homes are there in Theys?
110, with occasional dwellings: 11% of all homes, against 2.1% for the median compared French town.
How many immigrants live in Theys?
INSEE counts 61 immigrants (born abroad, not French at birth), 3% of residents, and 43 foreign nationals (2.1%). The medians of compared French towns are 6.5% and 4.3%.
What is the median income in Theys?
€31,360 a year per consumption unit in 2023 (median of compared French towns €25,970); 4.0% 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 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.