One-person households: 56%, a higher share than 99% of compared French towns
Nearly two in five households are headed by a retired person, against 32% in the typical compared French town. There were 830 households in Bletterans at the 2023 Census, home to 1,528 residents. Put another way, about one in four: 23% of households have no car. At 8.4%, the share of residents aged 15 to 24 is lower than in 89% of compared French towns.
Throughout this page, the Jura 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 Bletterans
Many people living alone
56% of Bletterans’ households are one person: higher than in 99% of compared French towns; 51% of residents 65 and over live alone. Households ↓
Empty homes
The census found 120 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.
Bletterans’s population changed by +8% since 2012, more than in 62% 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, −4% in Jura. Here the change came as +2% to 2017, then +6% to 2023.
A larger share of residents aged 65 and over than 89% of compared French towns: 32%
Shares of residents by age at the 2023 census.
Age groups · share of residents
Median age of the 3,798 compared French towns
■ Bletterans 50.1. The median compared French town: 44.
With a median age of 50.1, Bletterans is older than 83% of compared French towns. By way of comparison, 22% of residents are 65 or over in the typical compared French town.
Women and men · all residents
54% women, 46% men
About 87 men for every 100 women. Median share of women: Jura 52.0%, France 51.8%. Women live longer than men, so towns with many older residents have more women.
Below 93% of compared French towns: 14% of households are couples with children
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 Jura median and the France median
Living alone · share
4.8% of households are single parents; in the typical compared French town the figure is 10%. In the typical compared French town, couples with children come to 25%. A household here holds 1.8 people on average.
Empty homes: 12%, a higher share than 89% 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 figure for households in social housing is 18% in Bletterans and 12% in the typical compared French town. In the typical compared French town, 6.7% of homes stand empty. Flats: 43% of the total.
Median living standard: €23,520 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.
Per consumption unit, half of residents live on more than €23,520 a year: lower than in 77% of compared French towns.
Households headed by a manager or professional make up 4.2% in Bletterans, less than in 91% 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
Nearly a quarter of households are headed by a manual worker (typical compared French town: 14%). For households headed by a manager or professional, the comparison in the typical compared French town is 9.4%.
Each household is counted once, by the occupation of its reference person (usually the oldest working adult).
In Bletterans, 2.5% of residents are immigrants, fewer than in 86% 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.
The median compared commune in Jura has 7.6%; immigrants here make up a share lower than in 86% of compared French towns. The comparison figure for immigrants is 6.5% in the typical compared French town. Foreign nationals: 1.9% of the total.
INSEE publishes no country of birth or ethnicity by commune in these tables, and the census doesn’t ask about religion.
Fewer married residents than 97% of compared French towns: 31%
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 single residents is 25%; Bletterans has 27%. For married residents, the comparison in the typical compared French town is 43%.
Bletterans ranks below 93% of compared French towns on graduates of higher education: 17%
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
Against a figure of 19% in the typical compared French town, the share of adults with no qualification in Bletterans comes in at 29%. The share of graduates of higher education in the typical compared French town is 30%.
41 French towns of 1,528 to 2,582 people: this is the 14th 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).
Around Bletterans, 1 of 4 towns have a higher median age
The nearest towns of 2,500 or more, colored by median age. Source: INSEE, census 2023.
| Town | Median age | 65+ | Second homes | Immigrants |
|---|---|---|---|---|
| Bletterans | 50.1 | 32% | 2.1% | 2.5% |
| Montmorot 3,261 · 6.1 mi | 46.9 | 27% | 3.5% | 5.6% |
| Lons-le-Saunier 16,618 · 7.2 mi | 47.2 | 28% | 5.4% | 12% |
| Louhans-Châteaurenaud 6,446 · 13.2 mi | 55.4 | 37% | 2.9% | 6.1% |
| Poligny 3,976 · 13.6 mi | 46.4 | 28% | 5.2% | 7.6% |
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 Bletterans
What is the population of Bletterans?
1,528 at INSEE’s 2023 census, 8% more than in 2012 (1,418).
How old are Bletterans’ residents?
The median age is 50.1, older than 83% of compared French towns. 17% are under 18 and 32% 65 or older.
How many second homes are there in Bletterans?
20, with occasional dwellings: 2.1% of all homes, against 2.1% for the median compared French town.
How many immigrants live in Bletterans?
INSEE counts 39 immigrants (born abroad, not French at birth), 2.5% of residents, and 29 foreign nationals (1.9%). The medians of compared French towns are 6.5% and 4.3%.
What is the median income in Bletterans?
€23,520 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.