Fewer one-person households than 99% of compared French towns: 18%
Here 4.1% of homes are flats, where the figure in the typical compared French town is 30%. Residents aged 15 to 24: 6.9% of the total. On households headed by a retired person, Leffonds sits higher than 82% of compared French towns: 39%. The 2023 Census counted 344 residents in 140 households.
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 Leffonds
One home in nine is a second home
The census counted 19 second homes and occasional dwellings in Leffonds, 11% of its 170 homes: higher than in 88% of compared French towns. 94% of them are houses. Their owners live elsewhere, so they aren’t in the population figures on this page. Homes & cars ↓
Written from INSEE’s census 2023 on this page, against compared French towns.
Second homes make up 11% in Leffonds, more than in 88% 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
The share of households without a car trails 76% of compared French towns: 6.6%. Add to that, households in social housing are rarer here than in 99% of compared French towns. In the typical compared French town, the share of second homes is 2.1%. Across Leffonds, nearly one in ten homes stand empty.
Leffonds grew +6% from 2012 to 2023, faster than 53% 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
Medians for comparison: +5% across compared French towns, −9% in Haute-Marne. Here the change came as +7% to 2017, then −1% to 2023.
Fewer residents aged 65 and over than 58% of compared French towns: 21%
Shares of residents by age at the 2023 census.
Age groups · share of residents
Median age of the 3,798 compared French towns
■ Leffonds 44.2. The median compared French town: 44.
With a median age of 44.2, Leffonds is older than 51% of compared French towns. The wider picture: 22% of residents are 65 or over in the typical compared French town.
Women and men · all residents
53% women, 47% men
About 89 men for every 100 women. Median share of women: Haute-Marne 52.0%, France 51.8%.
More single-parent households than 99% of compared French towns: 18%
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
Households average 2.4 people. Measured more widely, 10% of households are single parents in the typical compared French town. On couples with children, Leffonds sits lower than just over two thirds of compared French towns: 21%.
€25,920 a year: the median standard of living
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 €25,920 a year per consumption unit, the median standard of living here is lower than in 51% of compared French towns.
Below 72% of compared French towns: 11% 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
Where 9.4% of households are headed by a manager or professional in the typical compared French town, Leffonds has 11%. By way of comparison, 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).
Below 99% of compared French towns: 0.9% of residents are immigrants
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 (1.2%), Leffonds is below 91% of compared French towns. Measured more widely, 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.
Leffonds sits below 99% of compared French towns for single residents (15%)
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 median compared French town 43% are married and 6.1% in a PACS; here it is 56% and 9%, and 4.5% are widowed. Single residents make up 25% in the typical compared French town.
Graduates of higher education: 18%, a lower share than 91% 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
About one in five: that is how common adults with no qualification are in Leffonds (20%). To put it in context, 30% of adults out of school hold a higher-education qualification in the typical compared French town.
Of 41 French towns its size (344 to 2,582 people), the 16th 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.
Villejust is the youngest (37.2); Prayssac the oldest (62.3).
Leffonds is younger than every town around it
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 Leffonds
What is the population of Leffonds?
344 at INSEE’s 2023 census, 6% more than in 2012 (326).
How old are Leffonds’ residents?
The median age is 44.2, older than 51% of compared French towns. 24% are under 18 and 21% 65 or older.
How many second homes are there in Leffonds?
19, with occasional dwellings: 11% of all homes, against 2.1% for the median compared French town.
How many immigrants live in Leffonds?
INSEE counts 3 immigrants (born abroad, not French at birth), 0.9% of residents, and 4 foreign nationals (1.2%). The medians of compared French towns are 6.5% and 4.3%.
What is the median income in Leffonds?
€25,920 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 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.