Monthieux ranks above 95% of compared French towns on couples with children: 37%
Against a figure of 11% in the typical compared French town, the share of households without a car in Monthieux comes in at 3.1%. Compared with other places, residents aged 15 to 24 are scarce here: 7.9%, fewer than in 93% of compared French towns. This Ain town had 664 residents in 260 households at the 2023 census. Flats account for 8.9%.
Throughout this page, the Ain 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 Monthieux
A town of families
37% of households are couples with children and 9.6% single parents with children; 22% of residents are under 15. Households ↓
Empty homes
The census found 35 homes empty (11%): for sale, to let, awaiting work or simply unused. Homes & cars ↓
Written from INSEE’s census 2023 on this page, against compared French towns.
Since 2012, Monthieux has changed by +3%, slower than 58% 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
In two steps, ±0% to 2017 and +3% after, the town’s change compares with +5% for the median compared French town and +13% in Ain.
Only 18% of residents are 65 or over in Monthieux
Shares of residents by age at the 2023 census.
Age groups · share of residents
Median age of the 3,798 compared French towns
■ Monthieux 44.5. The median compared French town: 44.
The median age in Monthieux is 44.5, higher than in 53% of compared French towns. Against that, 22% of residents are 65 or over in the typical compared French town.
Women and men · all residents
49% women, 51% men
About 105 men for every 100 women. Median share of women: Ain 51.0%, France 51.8%.
A lower share of one-person households than 99% of compared French towns, at 19%
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 Ain median and the France median
Living alone · share
On average, 2.6 people share a household. One in ten households are single parents, fewer than in 57% of compared French towns. Elsewhere, 35% of households are one person living alone in the typical compared French town.
Monthieux sits above 86% of compared French towns for empty homes (11%)
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
In the last two years, 4.7% of households moved in; at the other end, 19% have stayed 30 years or more. Set beside that, 6.7% of homes stand empty in the typical compared French town. At 6.6%, the share of households in social housing is lower than in 79% of compared French towns. By contrast, the figure for second homes is 3.7% in Monthieux and 2.1% in the typical compared French town.
A typical living standard of €31,060 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 median standard of living in Monthieux is €31,060 a year per consumption unit: higher than in 89% of compared French towns.
A lower share of households headed by a manual worker than 79% of compared French towns, at 9.6%
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 retired person: 29%, below 70% of compared French towns. Monthieux has more households headed by a manager or professional than 71% of compared French towns, at 13%. On average, 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).
Immigrants make up 4% in Monthieux, less than in 74% 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.
In Monthieux, 2% of residents are foreign nationals, beside 4.3% in the typical compared French town. Typically, 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.
Monthieux: 57% of residents 15 and over are married, above 99% 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
The figure for single residents is 18% in Monthieux and 25% in the typical compared French town. Married residents make up 43% in the typical compared French town.
Only 10% of adults out of school have no qualification in Monthieux
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
30% of adults out of school hold a higher-education qualification in the typical compared French town, against 41% in Monthieux. The share of adults with no qualification in the typical compared French town is 19%.
41 French towns of 664 to 2,582 people: this is the 17th 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.
At the ends of the range sit Villejust (37.2), the youngest, and Prayssac (62.3), the oldest.
1 in 6 nearby towns have a higher median age than Monthieux
The nearest towns of 2,500 or more, colored by median age. Source: INSEE, census 2023.
| Town | Median age | 65+ | Second homes | Immigrants |
|---|---|---|---|---|
| Monthieux | 44.5 | 18% | 3.7% | 4% |
| Saint-André-de-Corcy 3,370 · 2 mi | 45.3 | 25% | 1.2% | 4.2% |
| Villars-les-Dombes 5,163 · 5.4 mi | 42.5 | 24% | 2.8% | 7% |
| Reyrieux 5,358 · 6.2 mi | 42.8 | 19% | 1.7% | 6.1% |
| Massieux 2,843 · 6.5 mi | 43.4 | 18% | 1.1% | 5% |
| Genay 5,585 · 6.5 mi | 43 | 19% | 0.8% | 9% |
| Montanay 3,308 · 6.6 mi | 44.5 | 20% | 0.4% | 4.9% |
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 Monthieux
What is the population of Monthieux?
664 at INSEE’s 2023 census, 3% more than in 2012 (646).
How old are Monthieux’s residents?
The median age is 44.5, older than 53% of compared French towns. 25% are under 18 and 18% 65 or older.
How many second homes are there in Monthieux?
11, with occasional dwellings: 3.7% of all homes, against 2.1% for the median compared French town.
How many immigrants live in Monthieux?
INSEE counts 26 immigrants (born abroad, not French at birth), 4% of residents, and 13 foreign nationals (2%). The medians of compared French towns are 6.5% and 4.3%.
What is the median income in Monthieux?
€31,060 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 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.