A smaller share of couples with children than 99% of compared French towns: 11%
Against a figure of 30% in the typical compared French town, the share of flats in Semilly comes in at 5.1%. The 2023 Census put the town’s population at 94, in 49 households. Locally, 44% of households are headed by a retired person. Half of the town’s residents are over 48, older than in 74% of compared French towns.
Throughout this page, the Haute-Marne 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 Semilly
Fewer residents than in 2012
Semilly had 100 residents at the 2012 census and 94 in 2023, down 6%: slower growth than in 91% of compared French towns. Population ↓
Empty homes
The census found 9 homes empty (15%): for sale, to let, awaiting work or simply unused. Homes & cars ↓
Written from INSEE’s census 2023 on this page, against compared French towns.
Slower growth than 91% of compared French towns: Semilly changed by −6% since 2012
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, +8% to 2017 and −13% after, the town’s change compares with +5% for the median compared French town and −9% in Haute-Marne.
A lower share of residents aged 15 to 24 than 99% of compared French towns, at 5.3%
Shares of residents by age at the 2023 census.
Age groups · share of residents
Median age of the 3,798 compared French towns
■ Semilly 48. The median compared French town: 44.
Where 22% of residents are 65 or over in the typical compared French town, Semilly has 26%. Measured more widely, 11% of residents are 15 to 24 in the typical compared French town.
Women and men · all residents
51% women, 49% men
About 96 men for every 100 women. Median share of women: Haute-Marne 52.0%, France 51.8%.
A larger share of one-person households than 82% of compared French towns: 44%
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 Haute-Marne median and the France median
Living alone · share
10% of households are single parents in the typical compared French town, against 11% in Semilly. There are 1.9 people in the average household. For comparison, just over a third of households are one person living alone in the typical compared French town.
Semilly: 15% of homes stand empty, above 96% 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
Newcomers of less than two years account for 2% of households, residents of 30 years or more for 37%. Households in social housing are rarer here than in 99% of compared French towns. Across the comparison, 6.7% of homes stand empty in the typical compared French town. With households without a car at 8.2%, Semilly is behind nearly two thirds of compared French towns on that count.
€25,150 a year is the median standard of living here
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.
At €25,150 a year per consumption unit, the median standard of living here is lower than in 58% of compared French towns.
Households headed by a manual worker: 11%, a lower share than 70% of compared French towns
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
In the typical compared French town, 9.4% of households are headed by a manager or professional; in Semilly, 11%. 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).
A lower share of immigrants than 80% of compared French towns, at 3.2%
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.
Against a figure of 4.3% in the typical compared French town, the share of foreign nationals in Semilly comes in at 2.1%. The usual figure: 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.
20% of residents 15 and over are single, fewer than in 93% 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
Compared with 43% in the typical compared French town, 36% of residents 15 and over are married here. In the typical compared French town, the share of single residents is 25%.
Semilly ranks below 91% of compared French towns on graduates of higher education: 18%
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 figure for adults with no qualification is 29% in Semilly and 19% in the typical compared French town. To put it in context, 30% of adults out of school hold a higher-education qualification in the typical compared French town.
41 French towns of 94 to 2,582 people: this is the 15th 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.
At the ends of the range sit Villejust (37.2), the youngest, and Prayssac (62.3), the oldest.
Semilly is younger 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 |
|---|---|---|---|---|
| Semilly | 48 | 26% | 1.7% | 3.2% |
| Neufchâteau 6,732 · 12.7 mi | 49.9 | 29% | 2.2% | 8% |
| Nogent 3,550 · 16.6 mi | 50.7 | 31% | 2.4% | 4.3% |
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 Semilly
What is the population of Semilly?
94 at INSEE’s 2023 census, 6% fewer than in 2012 (100).
How old are Semilly’s residents?
The median age is 48, older than 74% of compared French towns. 18% are under 18 and 26% 65 or older.
How many second homes are there in Semilly?
1, with occasional dwellings: 1.7% of all homes, against 2.1% for the median compared French town.
How many immigrants live in Semilly?
INSEE counts 3 immigrants (born abroad, not French at birth), 3.2% of residents, and 2 foreign nationals (2.1%). The medians of compared French towns are 6.5% and 4.3%.
What is the median income in Semilly?
€25,150 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.