Photo: Ateliers de Tubize · Public domainHalf of Blanzy is over 53, older than 91% of compared French towns
In the typical compared French town, 6.7% of homes stand empty; in Blanzy, 10%. The town counted 5,955 residents and 2,810 households at the 2023 Census. Households headed by a retired person come to 49% in the town, about five in ten. Nearly a fifth of households are couples with children, fewer than in 78% of compared French towns.
Throughout this page, the Saône-et-Loire 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 Blanzy
Fewer residents than in 2012
Blanzy had 6,481 residents at the 2012 census and 5,955 in 2023, down 8%: slower growth than in 95% of compared French towns. Population ↓
An older town
Half of Blanzy’s residents are under 53 and half over; the median of compared French towns is 44. 32% are 65 or older (France median 22%), 6.9% 80 or older. Ages ↓
Written from INSEE’s census 2023 on this page, against compared French towns.
Blanzy’s population moved −8% on 2012, less than in 95% 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
Against +5% for the median compared French town and −3% for the median Saône-et-Loire town, the change came in two steps: −5% from 2012 to 2017, then −3% to 2023.
A larger share of residents aged 65 and over than 90% 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
■ Blanzy 53. The median compared French town: 44.
With residents aged 15 to 24 at 8.3%, Blanzy is behind 90% of compared French towns on that count. Against that, 22% of residents are 65 or over in the typical compared French town.
Women and men · all residents
52% women, 48% men
About 92 men for every 100 women. Median share of women: Saône-et-Loire 52.3%, France 51.8%. Women live longer than men, so towns with many older residents have more women.
Only 8% of households are single parents in Blanzy
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 Saône-et-Loire median and the France median
Living alone · share
Average household size: 2.1 people. The benchmark for single-parent households in the typical compared French town: 10%. Against a figure of 35% in the typical compared French town, the share of one-person households in Blanzy comes in at 33%.
In Blanzy, 17% of households rent social housing (HLM), more than in 68% 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
Compared with 30% in the typical compared French town, just over a fifth of homes are flats here. Against that, just over one in ten households rent social housing (HLM) in the typical compared French town. Second homes account for 0.9%.
Median standard of living: €24,580 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.
Half of residents live in households above €24,580 a year per consumption unit and half below; the level is lower than in 65% of compared French towns. The share living below the poverty line is 13.0%.
3.9% of households are headed by a manager or professional, fewer than in 93% 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
The share of households headed by a manual worker stands at 15%. Households headed by a manager or professional: 9.4% in the typical compared French town, for comparison.
Each household is counted once, by the occupation of its reference person (usually the oldest working adult).
5% of residents are immigrants, below 63% 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.
3.1% of residents are foreign nationals, against 4.3% in the typical compared French town. In the typical compared French town, the share of immigrants is 6.5%.
INSEE publishes no country of birth or ethnicity by commune in these tables, and the census doesn’t ask about religion.
In Blanzy, 50% of residents 15 and over are married, more than in 91% 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
21% of residents 15 and over are single; in the typical compared French town the figure is 25%. Married residents make up 43% in the typical compared French town.
Blanzy ranks below 88% of compared French towns on graduates of higher education: 19%
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
23% of adults out of school have no qualification; in the typical compared French town the figure is 19%. The comparison figure for graduates of higher education is 30% in the typical compared French town.
The 4th oldest of 41 French towns of 5,890 to 6,022 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 35.4 in La Verrière to 56.7 in Ciboure.
Blanzy is older 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 |
|---|---|---|---|---|
| Blanzy | 53 | 32% | 0.9% | 5% |
| Montceau-les-Mines 17,064 · 2 mi | 50.2 | 30% | 1.1% | 12% |
| Saint-Vallier 8,508 · 3.7 mi | 52.3 | 32% | 1.7% | 5% |
| Montchanin 4,976 · 5.1 mi | 46.7 | 28% | 2.4% | 7.8% |
| Sanvignes-les-Mines 4,235 · 5.2 mi | 47.2 | 24% | 1.1% | 2.9% |
| Torcy 2,678 · 6.1 mi | 46.1 | 28% | 1% | 17% |
| Le Creusot 20,509 · 7.3 mi | 48.4 | 30% | 1.9% | 14% |
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 Blanzy
What is the population of Blanzy?
5,955 at INSEE’s 2023 census, 8% fewer than in 2012 (6,481).
How old are Blanzy’s residents?
The median age is 53, older than 91% of compared French towns. 18% are under 18 and 32% 65 or older.
How many second homes are there in Blanzy?
30, with occasional dwellings: 0.9% of all homes, against 2.1% for the median compared French town.
How many immigrants live in Blanzy?
INSEE counts 300 immigrants (born abroad, not French at birth), 5% of residents, and 190 foreign nationals (3.1%). The medians of compared French towns are 6.5% and 4.3%.
What is the median income in Blanzy?
€24,580 a year per consumption unit in 2023 (median of compared French towns €25,970); 13.0% of residents live below the poverty line. 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.