A smaller share of households headed by a retired person than 94% of compared French towns: 21%
Single-parent households: 15% here and 10% in the typical compared French town. Flats account for 51%. At 9.4%, the share of second homes is higher than in 87% of compared French towns. Seyssel had 1,008 residents in 490 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.
Seyssel’s population changed by +6% since 2012, more than in 56% 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
Over the whole period the median compared French town changed +5%, and the median Ain town +13%.
Younger than 60% of compared French towns: half of Seyssel is under 42.8
Shares of residents by age at the 2023 census.
Age groups · share of residents
Median age of the 3,798 compared French towns
■ Seyssel 42.8. The median compared French town: 44.
Put another way, about one in five: just over a fifth of residents are 65 or over. Fewer residents aged 15 to 24 than in 58% of compared French towns: 10%.
Women and men · all residents
54% women, 46% men
About 86 men for every 100 women. Median share of women: Ain 51.0%, France 51.8%.
Fewer couples with children than 78% of compared French towns: 19%
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
One-person households make up 41%, against 35% in the typical compared French town. On average, 25% of households are couples with children in the typical compared French town. Households average 2.1 people.
10% of homes stand empty, a share 79% of compared French towns don’t reach
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
In the last two years, 13% of households moved in; at the other end, 11% have stayed 30 years or more. Lower than in nearly three fifths of compared French towns: 9% of households have no car. Empty homes: 6.7% in the typical compared French town, for comparison. At 12%, households in social housing sit close to the figure in the typical compared French town.
A median standard of living of €27,640 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 €27,640 a year per consumption unit: higher than in 67% of compared French towns.
More households headed by a manual worker than 89% of compared French towns: 22%
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
Few places have so few households headed by a manager or professional: 8.9% here, fewer than in 53% of compared French towns. Elsewhere, 14% of households are headed by a manual worker in the typical compared French town.
Each household is counted once, by the occupation of its reference person (usually the oldest working adult).
Immigrants make up 13% in Seyssel, more than in 81% 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.
In Seyssel, one in ten residents are foreign nationals, beside 4.3% in the typical compared French town. For immigrants, the comparison in the typical compared French town is 6.5%.
INSEE publishes no country of birth or ethnicity by commune in these tables, and the census doesn’t ask about religion.
Only 38% of residents 15 and over are married in Seyssel
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
28% of residents 15 and over are single (typical compared French town: 25%). For married residents, the comparison in the typical compared French town is 43%.
Seyssel sits below 75% of compared French towns for adults with no qualification (15%)
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
Graduates of higher education are rarer here than in 52% of compared French towns. To put it in context, nearly a fifth of adults out of school have no qualification in the typical compared French town.
41 French towns of 1,008 to 2,582 people: this is the 10th 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 Villejust (37.2), the oldest Prayssac (62.3).
Median age: 1 of the 6 towns around Seyssel are older
The nearest towns of 2,500 or more, colored by median age. Source: INSEE, census 2023.
| Town | Median age | 65+ | Second homes | Immigrants |
|---|---|---|---|---|
| Seyssel | 42.8 | 21% | 9.4% | 13% |
| Vallières-sur-Fier 2,860 · 6.1 mi | 39.4 | 15% | 2.9% | 3.4% |
| Culoz-Béon 3,453 · 7.8 mi | 43.5 | 23% | 6.2% | 15% |
| Rumilly 16,442 · 8.5 mi | 39.4 | 17% | 1.8% | 14% |
| La Balme-de-Sillingy 5,336 · 9.9 mi | 39.8 | 17% | 1.4% | 6.4% |
| Sillingy 5,826 · 10.1 mi | 39.8 | 15% | 1.1% | 7.1% |
| Valserhône 16,712 · 10.8 mi | 40.3 | 17% | 2.9% | 21% |
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 Seyssel
What is the population of Seyssel?
1,008 at INSEE’s 2023 census, 6% more than in 2012 (950).
How old are Seyssel’s residents?
The median age is 42.8, younger than 60% of compared French towns. 21% are under 18 and 21% 65 or older.
How many second homes are there in Seyssel?
57, with occasional dwellings: 9.4% of all homes, against 2.1% for the median compared French town.
How many immigrants live in Seyssel?
INSEE counts 130 immigrants (born abroad, not French at birth), 13% of residents, and 100 foreign nationals (10%). The medians of compared French towns are 6.5% and 4.3%.
What is the median income in Seyssel?
€27,640 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 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.