A higher share of households headed by a retired person than 99% of compared French towns, at 75%
5.9% of homes are flats, against 30% in the typical compared French town. There were 21 households in Bize at the 2023 Census, home to 79 residents. On the census count, 25% of households are one person living alone. Residents aged 65 and over are rarer here than in 84% 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 Bize
One home in three is a second home
The census counted 10 second homes and occasional dwellings in Bize, 29% of its 35 homes: higher than in 95% of compared French towns. 100% of them are houses. Their owners live elsewhere, so they aren’t in the population figures on this page. Homes & cars ↓
Fewer residents than in 2012
Bize had 87 residents at the 2012 census and 79 in 2023, down 9%: slower growth than in 96% of compared French towns. Population ↓
Empty homes
The census found 4 homes empty (12%): for sale, to let, awaiting work or simply unused. Homes & cars ↓
Written from INSEE’s census 2023 on this page, against compared French towns.
A town of second homes: 29% of its 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
Households in social housing are rarer here than in 99% of compared French towns. The benchmark for second homes in the typical compared French town: 2.1%. Put another way, about one in eight: just over one in ten homes stand empty. By its share of households without a car (14%), Bize is above 63% of compared French towns.
Slower than most: −9% since 2012, behind 96% 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
Between 2012 and 2017 the population moved +6%, then −14% to 2023.
More residents aged 15 to 24 than 89% of compared French towns: 13%
Shares of residents by age at the 2023 census.
Age groups · share of residents
Median age of the 3,798 compared French towns
■ Bize 46.5. The median compared French town: 44.
Half of Bize’s residents are over 46.5, older than in nearly two thirds of compared French towns. The wider picture: 11% of residents are 15 to 24 in the typical compared French town.
Women and men · all residents
50% women, 50% men
About an even split. Median share of women: Haute-Marne 52.0%, France 51.8%.
Bize ranks above 99% of compared French towns on single-parent households: 25%
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
On average, 2.3 people share a household. Measured more widely, 10% of households are single parents in the typical compared French town.
The largest group of households: retired (75%)
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.
Each household is counted once, by the occupation of its reference person (usually the oldest working adult).
Immigrants make up 2.4% in Bize, less than in 88% 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.
Set against 4.3% in the typical compared French town, 2.4% of residents are foreign nationals in Bize. The wider picture: 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.
A larger share of single residents than 99% of compared French towns: 51%
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, nearly a quarter of residents 15 and over are married here. Single residents make up 25% in the typical compared French town.
In Bize, 6.7% of adults out of school hold a higher-education qualification, fewer than in 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
Compared with 19% in the typical compared French town, 53% of adults out of school have no qualification here. Against that, 30% of adults out of school hold a higher-education qualification in the typical compared French town.
The 18th oldest of 41 French towns of 79 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.
Ages run from 37.2 in Villejust to 62.3 in Prayssac.
Bize 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 |
|---|---|---|---|---|
| Bize | 46.5 | 17% | 29% | 2.4% |
| Langres 7,421 · 14.1 mi | 46.5 | 27% | 3.4% | 13% |
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 Bize
What is the population of Bize?
79 at INSEE’s 2023 census, 9% fewer than in 2012 (87).
How old are Bize’s residents?
The median age is 46.5, older than 66% of compared French towns. 11% are under 18 and 17% 65 or older.
How many second homes are there in Bize?
10, with occasional dwellings: 29% of all homes, against 2.1% for the median compared French town.
How many immigrants live in Bize?
INSEE counts 2 immigrants (born abroad, not French at birth), 2.4% of residents, and 2 foreign nationals (2.4%). 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.