Half of Séderon is over 60.4, older than 98% of compared French towns
Where a quarter of households are couples with children in the typical compared French town, Séderon has 3.2%. Households headed by a manager or professional account for 3.5%. At 9.9%, the share of flats is lower than in 87% of compared French towns. There were 150 households locally at the 2023 Census, home to 237 residents.
Throughout this page, the Drôme 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 Séderon
One home in two is a second home
The census counted 150 second homes and occasional dwellings in Séderon, 46% of its 320 homes: higher than in 97% of compared French towns. 77% 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 Séderon’s residents are under 60.4 and half over; the median of compared French towns is 44. 40% are 65 or older (France median 22%), 9.6% 80 or older. Ages ↓
Fewer residents than in 2012
Séderon had 282 residents at the 2012 census and 237 in 2023, down 16%: slower growth than in 99% of compared French towns. Population ↓
Many people living alone
55% of Séderon’s households are one person: higher than in 98% of compared French towns; 49% of residents 65 and over live alone. Households ↓
Written from INSEE’s census 2023 on this page, against compared French towns.
46% of homes in Séderon are second 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
By its share of households in social housing (4.2%), Séderon is below 90% of compared French towns. On average, 2.1% of homes are second homes in the typical compared French town. Census figures put households without a car at 14% locally. Empty homes are more common here than in 60% of compared French towns.
−16% since 2012: slower than 99% 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
Against +5% for the median compared French town and +8% for the median Drôme town, the change came in two steps: −6% from 2012 to 2017, then −10% to 2023.
Residents aged 65 and over: 40%, a higher share than 98% 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
■ Séderon 60.4. The median compared French town: 44.
4.6% of residents are 15 to 24; in the typical compared French town the figure is 11%. Typically, 22% of residents are 65 or over in the typical compared French town.
Women and men · all residents
52% women, 48% men
About 92 men for every 100 women. Median share of women: Drôme 51.8%, France 51.8%. Women live longer than men, so towns with many older residents have more women.
55% of households are one person living alone, a share 98% of compared French towns don’t reach
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 Drôme median and the France median
Living alone · share
Single-parent households: 7%, below 90% of compared French towns. The comparison figure for one-person households is 35% in the typical compared French town. Households here average 1.6 people each.
Median living standard: €22,680 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 residents live in households above €22,680 a year per consumption unit and half below; the level is lower than in 84% of compared French towns.
Séderon sits above 99% of compared French towns for households headed by a retired person (64%)
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
The share of households headed by a manual worker is 10%, against 14% in the typical compared French town. By way of comparison, nearly a third of households are headed by a retired person in the typical compared French town.
Each household is counted once, by the occupation of its reference person (usually the oldest working adult).
Fewer foreign nationals than 71% of compared French towns: 2.6%
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 55% of compared French towns; the median compared commune in Drôme has 6.5%. The wider picture: 4.3% of residents are foreign nationals in the typical compared French town. About one in 17: that is how common immigrants are in Séderon (6%).
INSEE publishes no country of birth or ethnicity by commune in these tables, and the census doesn’t ask about religion.
Only 41% of residents 15 and over are married in Séderon
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
Single residents account for 25%. For comparison, 43% of residents 15 and over are married in the typical compared French town.
Fewer graduates of higher education than 81% of compared French towns: 21%
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
For Séderon, the census puts adults with no qualification at 20%. The benchmark for graduates of higher education in the typical compared French town: 30%.
The 4th oldest of 41 French towns of 237 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).
Séderon and the towns 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 |
|---|---|---|---|---|
| Séderon | 60.4 | 40% | 46% | 6% |
| Laragne-Montéglin 3,549 · 16.2 mi | 54.7 | 33% | 5.2% | 8.7% |
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 Séderon
What is the population of Séderon?
237 at INSEE’s 2023 census, 16% fewer than in 2012 (282).
How old are Séderon’s residents?
The median age is 60.4, older than 98% of compared French towns. 9.8% are under 18 and 40% 65 or older.
How many second homes are there in Séderon?
150, with occasional dwellings: 46% of all homes, against 2.1% for the median compared French town.
How many immigrants live in Séderon?
INSEE counts 14 immigrants (born abroad, not French at birth), 6% of residents, and 6 foreign nationals (2.6%). The medians of compared French towns are 6.5% and 4.3%.
What is the median income in Séderon?
€22,680 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 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.