Half of Siévoz is over 54, older than 93% of compared French towns
Empty homes are rarer here than in 99% of compared French towns. Here, 1.1% of homes are flats. At the 2023 Census Siévoz was home to 132 people in 64 households. In the typical compared French town, the share of households in social housing is 12%; Siévoz has 3.3%.
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 Siévoz
One home in three is a second home
The census counted 30 second homes and occasional dwellings in Siévoz, 32% of its 94 homes: higher than in 95% of compared French towns. 100% of them are houses. Their owners live elsewhere, so they aren’t in the population figures on this page. Homes & cars ↓
An older town
Half of Siévoz’s residents are under 54 and half over; the median of compared French towns is 44. 33% are 65 or older (France median 22%), 9.5% 80 or older. Ages ↓
Written from INSEE’s census 2023 on this page, against compared French towns.
Second homes: 32%, a higher share than 95% of compared French towns
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
8.2% of households have no car; in the typical compared French town the figure is 11%. Second homes make up 2.1% in the typical compared French town.
Siévoz grew +8% from 2012 to 2023, faster than 64% 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
Between 2012 and 2017 the population moved +11%, then −3% to 2023. Over those years, the median Isère town changed +7% and the median compared French town +5%.
A smaller share of residents aged 15 to 24 than 97% of compared French towns: 7.1%
Shares of residents by age at the 2023 census.
Age groups · share of residents
Median age of the 3,798 compared French towns
■ Siévoz 54. The median compared French town: 44.
22% of residents are 65 or over in the typical compared French town, against 33% in Siévoz. Set beside that, 11% of residents are 15 to 24 in the typical compared French town.
Women and men · all residents
47% women, 53% men
About 114 men for every 100 women. Median share of women: Isère 51.3%, France 51.8%.
A higher share of single-parent households than 99% of compared French towns, at 25%
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
Households here average 2.1 people each. The usual figure: 10% of households are single parents in the typical compared French town. Siévoz has fewer couples with children than 86% of compared French towns, at 17%. In Siévoz, just over two in five households are one person living alone, beside 35% in the typical compared French town.
Per consumption unit, the median standard of living is €25,590 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.
Half of Siévoz’s residents live in households with a standard of living below €25,590 a year per consumption unit, and half above: lower than in 54% of compared French towns.
25% of households are headed by a manager or professional, a share 94% of compared French towns don’t reach
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
By its share of households headed by a manual worker (8.3%), Siévoz is below 86% of compared French towns. Put another way, about one in three: a third of households are headed by a retired person. 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).
0.8% of residents are foreign nationals, fewer than in 97% 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.
Immigrants make up a share lower than in 80% of compared French towns; the median compared commune in Isère has 8%. As a yardstick, 4.3% of residents are foreign nationals in the typical compared French town. 3.2% of residents are immigrants.
INSEE publishes no country of birth or ethnicity by commune in these tables, and the census doesn’t ask about religion.
Married residents make up 49% in Siévoz, more than in 86% 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
The census found that 25% of residents 15 and over are single in Siévoz. The comparison figure for married residents is 43% in the typical compared French town.
In Siévoz, 9.2% of adults out of school have no qualification, fewer than in 97% 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 Siévoz, 34% of adults out of school hold a higher-education qualification, beside 30% in the typical compared French town. Adults with no qualification make up 19% in the typical compared French town.
The 7th oldest of 41 French towns of 132 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.
The youngest is Villejust (37.2), the oldest Prayssac (62.3).
Siévoz is older than every town around it
The nearest towns of 2,500 or more, colored by median age. Source: INSEE, census 2023.
| Town | Median age | 65+ | Second homes | Immigrants |
|---|---|---|---|---|
| Siévoz | 54 | 33% | 32% | 3.2% |
| La Mure 4,963 · 2.7 mi | 49.5 | 30% | 5.1% | 8.2% |
| Saint-Georges-de-Commiers 2,699 · 11.5 mi | 43 | 21% | 1.5% | 4% |
| Vizille 7,292 · 12.4 mi | 44 | 23% | 2.4% | 8% |
| Vif 8,530 · 13.2 mi | 44.2 | 20% | 1.5% | 5.1% |
| Champ-sur-Drac 3,335 · 13.3 mi | 44.9 | 23% | 1.2% | 6.1% |
| Le Bourg-d'Oisans 2,617 · 14.2 mi | 52.4 | 28% | 32% | 5.4% |
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 Siévoz
What is the population of Siévoz?
132 at INSEE’s 2023 census, 8% more than in 2012 (122).
How old are Siévoz’s residents?
The median age is 54, older than 93% of compared French towns. 22% are under 18 and 33% 65 or older.
How many second homes are there in Siévoz?
30, with occasional dwellings: 32% of all homes, against 2.1% for the median compared French town.
How many immigrants live in Siévoz?
INSEE counts 4 immigrants (born abroad, not French at birth), 3.2% of residents, and 1 foreign nationals (0.8%). The medians of compared French towns are 6.5% and 4.3%.
What is the median income in Siévoz?
€25,590 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 8, 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.