Photo: PA · CC BY-SA 3.0Couples with children: 39%, a higher share than 98% of compared French towns
3% of households have no car (typical compared French town: 11%). Mios counted 12,043 residents and 4,800 households at the 2023 Census. Residents aged 65 and over: 14% of the total. Few places have so few flats: 9.2% here, fewer than in 88% of compared French towns.
Throughout this page, the Gironde 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 Mios
A town of families
39% of households are couples with children and 11% single parents with children; 23% of residents are under 15. Households ↓
Growing fast
Mios had 7,871 residents at the 2012 census and 12,043 in 2023, up 53%: faster growth than in 99% of compared French towns. Population ↓
Written from INSEE’s census 2023 on this page, against compared French towns.
Growth of +53% since 2012 puts Mios ahead of 99% 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 +16% for the median Gironde town, the change came in two steps: +27% from 2012 to 2017, then +21% to 2023.
Half of Mios is under 39.8, younger than 80% of compared French towns
Shares of residents by age at the 2023 census.
Age groups · share of residents
Median age of the 3,798 compared French towns
■ Mios 39.8. The median compared French town: 44.
In Mios, nearly one in ten residents are 15 to 24, beside 11% in the typical compared French town.
Women and men · all residents
51% women, 49% men
About an even split. Median share of women: Gironde 51.8%, France 51.8%.
24% of households are one person living alone, below 96% of compared French towns
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 Gironde median and the France median
Living alone · share
The typical household size is 2.5 people. The share of single-parent households stands at 11%. Across the comparison, just over a third of households are one person living alone in the typical compared French town.
3.8% of homes stand empty, below 90% 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
Households that moved in under two years ago: 11%. Those in their home 30 years or more: 11%. Mios has fewer households in social housing than nearly three quarters of compared French towns, at 7.5%. In the typical compared French town, empty homes come to 6.7%. There is little gap on second homes: 1.8%, about the same as in the typical compared French town.
Standard of living at the median: €28,780 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.
The midpoint of living standards here is €28,780 a year per consumption unit, higher than in 77% of compared French towns. Living below the poverty line: 7.0% of residents.
22% of households are headed by a retired person, below 92% 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
By its share of households headed by a manual worker (12%), Mios is below 62% of compared French towns. Measured more widely, 32% of households are headed by a retired person in the typical compared French town. Households headed by a manager or professional are more common here than in nearly two thirds of compared French towns.
Each household is counted once, by the occupation of its reference person (usually the oldest working adult).
In Mios, 3.6% of residents are immigrants, fewer than in 77% 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.
4.3% of residents are foreign nationals in the typical compared French town, against 2.3% in Mios. As a reference point, 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 smaller share of single residents than 90% of compared French towns: 20%
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, 43% of residents 15 and over are married; in Mios, 46%. Single residents make up 25% in the typical compared French town.
11% of adults out of school have no qualification, fewer than in 93% 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
With graduates of higher education at 36%, Mios is ahead of 70% of compared French towns on that count. In the typical compared French town, nearly a fifth of adults out of school have no qualification.
Of 41 French towns its size (11,742 to 12,338 people), the 12th 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.
The youngest is Saint-Pierre-du-Perray (33.7), the oldest Saint-Cyprien (61.1).
Every neighbor is older than Mios
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 Mios
What is the population of Mios?
12,043 at INSEE’s 2023 census, 53% more than in 2012 (7,871).
How old are Mios’ residents?
The median age is 39.8, younger than 80% of compared French towns. 27% are under 18 and 14% 65 or older.
How many second homes are there in Mios?
94, with occasional dwellings: 1.8% of all homes, against 2.1% for the median compared French town.
How many immigrants live in Mios?
INSEE counts 430 immigrants (born abroad, not French at birth), 3.6% of residents, and 280 foreign nationals (2.3%). The medians of compared French towns are 6.5% and 4.3%.
What is the median income in Mios?
€28,780 a year per consumption unit in 2023 (median of compared French towns €25,970); 7.0% 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 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.