Older than 98% of compared French towns: half of Semuy is over 58.8
Here 44% of households are one person living alone, where the figure in the typical compared French town is 35%. Census figures put households headed by a retired person at 78% in Semuy. Households in social housing are rarer here than in 99% of compared French towns. The town counted 87 residents and 45 households at the 2023 Census.
Throughout this page, the Ardennes 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 Semuy
One home in five is a second home
The census counted 15 second homes and occasional dwellings in Semuy, 19% of its 78 homes: higher than in 93% of compared French towns. 93% 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 Semuy’s residents are under 58.8 and half over; the median of compared French towns is 44. 39% are 65 or older (France median 22%), 8% 80 or older. Ages ↓
Empty homes
The census found 18 homes empty (23%): for sale, to let, awaiting work or simply unused. Homes & cars ↓
Written from INSEE’s census 2023 on this page, against compared French towns.
Semuy ranks above 99% of compared French towns on empty homes: 23%
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
One household in eight has no car, against 11% in the median compared French town. In the typical compared French town, the share of empty homes is 6.7%. Here, 3.8% of homes are flats. On second homes, Semuy sits higher than 93% of compared French towns: 19%.
Slower than most: +4% since 2012, behind 55% 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
For comparison, the median compared French town changed +5% and the median Ardennes town −9%. The first five years brought +7%; the six to 2023, −3%.
Semuy: 39% of residents are 65 or over, above 97% 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
■ Semuy 58.8. The median compared French town: 44.
5.7% of residents are 15 to 24, against 11% in the typical compared French town. In the typical compared French town, 22% of residents are 65 or over.
Women and men · all residents
41% women, 59% men
About 71 women for every 100 men. Median share of women: Ardennes 52.2%, France 51.8%.
Semuy ranks below 64% of compared French towns on couples with children: 22%
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 Ardennes median and the France median
Living alone · share
Single-parent households are rarer here than in 99% of compared French towns. For couples with children, the comparison in the typical compared French town is 25%. Each household has 1.9 people on average.
A lower share of households headed by a manual worker than 70% of compared French towns, at 11%
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 are rarer here than in 99% of compared French towns. As a yardstick, 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 3.4% in Semuy, less than in 78% 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.
Foreign nationals are rarer here than in 99% of compared French towns. Elsewhere, 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.
Fewer single residents than 76% of compared French towns: 22%
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
In the typical compared French town, the share of married residents is 43%; Semuy has 45%. For single residents, the comparison in the typical compared French town is 25%.
11% of adults out of school hold a higher-education qualification, below 99% 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 the typical compared French town, 19% of adults out of school have no qualification; in Semuy, 44%. The wider picture: 30% of adults out of school hold a higher-education qualification in the typical compared French town.
Among 41 French towns of 87 to 2,582 people, the 4th 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).
No nearby town is as old as Semuy
The nearest towns of 2,500 or more, colored by median age. Source: INSEE, census 2023.
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 Semuy
What is the population of Semuy?
87 at INSEE’s 2023 census, 4% more than in 2012 (84).
How old are Semuy’s residents?
The median age is 58.8, older than 98% of compared French towns. 15% are under 18 and 39% 65 or older.
How many second homes are there in Semuy?
15, with occasional dwellings: 19% of all homes, against 2.1% for the median compared French town.
How many immigrants live in Semuy?
INSEE counts 3 immigrants (born abroad, not French at birth), 3.4% of residents, and 0 foreign nationals (0%). The medians of compared French towns are 6.5% and 4.3%.
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.