Sierentz sits below 97% of compared French towns for households headed by a retired person (18%)
Compared with 11% in the typical compared French town, 5.3% of households have no car here. In 2023, the Census found 4,409 residents in Sierentz, living in 1,980 households. 17% of residents are 65 or over. This Haut-Rhin town has more flats than 78% of compared French towns, at 52%.
Throughout this page, the Haut-Rhin 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 Sierentz
Growing fast
Sierentz had 3,244 residents at the 2012 census and 4,409 in 2023, up 36%: faster growth than in 98% of compared French towns. Population ↓
Empty homes
The census found 260 homes empty (12%): for sale, to let, awaiting work or simply unused. Homes & cars ↓
Written from INSEE’s census 2023 on this page, against compared French towns.
+36% since 2012, a pace 98% of compared French towns didn’t match
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
In two steps, +14% to 2017 and +19% after, the town’s change compares with +5% for the median compared French town and +4% in Haut-Rhin.
A median age of 39.6: Sierentz is younger than 81% 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
■ Sierentz 39.6. The median compared French town: 44.
By its share of residents aged 15 to 24 (9.7%), Sierentz is below 69% of compared French towns.
Women and men · all residents
51% women, 49% men
About 94 men for every 100 women. Median share of women: Haut-Rhin 51.5%, France 51.8%.
12% of households are single parents, more than in 74% 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 Haut-Rhin median and the France median
Living alone · share
On average, 2.1 people share a household. Across the comparison, 10% of households are single parents in the typical compared French town. 37% of households are one person living alone, against 35% in the typical compared French town.
Empty homes: 12%, a higher share than 86% 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
Turnover: 17% of households moved in less than two years ago, and 14% have lived in their home 30 years or more. In the typical compared French town, 6.7% of homes stand empty. Households in social housing are rarer here than in 78% of compared French towns. 2.1% of homes are second homes in the typical compared French town, against 1.1% in Sierentz.
A median of €37,960 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.
Half of residents live in households above €37,960 a year per consumption unit and half below; the level is higher than in 98% of compared French towns. Under the poverty line sit 7.0% of residents.
Above 82% of compared French towns: 20% of households are headed by a manual worker
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 manager or professional: 14% here and 9.4% in the typical compared French town.
Each household is counted once, by the occupation of its reference person (usually the oldest working adult).
A higher share of immigrants than 79% of compared French towns, at 12%
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.
By its share of foreign nationals (9.7%), Sierentz is above 81% of compared French towns. On average, 6.5% of residents are immigrants 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.
In Sierentz, 41% of residents 15 and over are married, fewer than in 63% 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
Here 24% of residents 15 and over are single, where the figure in the typical compared French town is 25%. The share of married residents in the typical compared French town is 43%.
In Sierentz, 39% of adults out of school hold a higher-education qualification, more than in 78% 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
The share of adults with no qualification is 14%, against 19% in the typical compared French town. As a yardstick, 30% of adults out of school hold a higher-education qualification in the typical compared French town.
41 French towns of 4,374 to 4,448 people: this is the 7th 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.
At the ends of the range sit Labège (33), the youngest, and Valras-Plage (67), the oldest.
Every neighbor is older than Sierentz
The nearest towns of 2,500 or more, colored by median age. Source: INSEE, census 2023.
| Town | Median age | 65+ | Second homes | Immigrants |
|---|---|---|---|---|
| Sierentz | 39.6 | 17% | 1.1% | 12% |
| Bartenheim 4,211 · 1.8 mi | 43.2 | 17% | 1.4% | 14% |
| Kembs 5,834 · 2.6 mi | 40.5 | 15% | 1.7% | 15% |
| Blotzheim 5,282 · 4.1 mi | 41 | 17% | 3.8% | 22% |
| Habsheim 5,076 · 5.5 mi | 44.4 | 21% | 0.8% | 5.8% |
| Hésingue 2,972 · 6.1 mi | 43.1 | 18% | 4.7% | 26% |
| Village-Neuf 4,709 · 6.2 mi | 43.7 | 19% | 3.4% | 18% |
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 Sierentz
What is the population of Sierentz?
4,409 at INSEE’s 2023 census, 36% more than in 2012 (3,244).
How old are Sierentz’s residents?
The median age is 39.6, younger than 81% of compared French towns. 22% are under 18 and 17% 65 or older.
How many second homes are there in Sierentz?
25, with occasional dwellings: 1.1% of all homes, against 2.1% for the median compared French town.
How many immigrants live in Sierentz?
INSEE counts 550 immigrants (born abroad, not French at birth), 12% of residents, and 430 foreign nationals (9.7%). The medians of compared French towns are 6.5% and 4.3%.
What is the median income in Sierentz?
€37,960 a year per consumption unit in 2023 (median of compared French towns €25,970); 7.0% 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 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.