Marsonnas ranks below 99% of compared French towns on households without a car: 2.5%
Where just over one in ten households rent social housing (HLM) in the typical compared French town, Marsonnas has 2.9%. The 2023 Census counted 1,039 residents in 430 households. Flats account for 6.8%. Few places have as many couples with children: 31% here, more than in 80% of compared French towns.
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.
Slower than most: +3% since 2012, behind 57% 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
The first five years brought −2%; the six to 2023, +5%.
Marsonnas sits below 74% of compared French towns for residents aged 65 and over (18%)
Shares of residents by age at the 2023 census.
Age groups · share of residents
Median age of the 3,798 compared French towns
■ Marsonnas 42.7. The median compared French town: 44.
Half of Marsonnas’s residents are under 42.7, younger than in three fifths of compared French towns. The share of residents aged 15 to 24 stands at 10%. In the typical compared French town, 22% of residents are 65 or over.
Women and men · all residents
49% women, 51% men
About an even split. Median share of women: Ain 51.0%, France 51.8%.
Marsonnas ranks below 90% of compared French towns on one-person households: 27%
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
Set against 10% in the typical compared French town, nearly one in ten households are single parents in Marsonnas. In the typical compared French town, just over a third of households are one person living alone. There are 2.4 people in the average household.
Marsonnas: 9.5% of homes stand empty, above 76% 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
7.9% of households arrived within the last two years, while 22% have stayed 30 years or more. Few places have as many second homes: 3.5% here, more than in 66% of compared French towns. Against that, 6.7% of homes stand empty in the typical compared French town.
A median standard of living of €26,720 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.
At €26,720 a year per consumption unit, the median standard of living here is higher than in 58% of compared French towns.
Marsonnas ranks above 88% of compared French towns on households headed by a manual worker: 21%
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 make up 28%, against 32% in the typical compared French town. Measured more widely, 14% of households are headed by a manual worker in the typical compared French town. For Marsonnas, the census puts households headed by a manager or professional at 9.5%.
Each household is counted once, by the occupation of its reference person (usually the oldest working adult).
Fewer immigrants than 89% of compared French towns: 2.2%
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.
Foreign nationals make up 0.9%, against 4.3% in the typical compared French town. The median compared commune in Ain has 8.5%; immigrants here make up a share lower than in 89% of compared French towns. The benchmark for immigrants in the typical compared French town: 6.5%.
INSEE publishes no country of birth or ethnicity by commune in these tables, and the census doesn’t ask about religion.
Only 21% of residents 15 and over are single in Marsonnas
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 Marsonnas, 47% of residents 15 and over are married, beside 43% in the typical compared French town. The share of single residents in the typical compared French town is 25%.
A lower share of adults with no qualification than 83% of compared French towns, at 13%
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
Graduates of higher education account for 30%. Measured more widely, 19% of adults out of school have no qualification in the typical compared French town.
41 French towns of 1,039 to 2,582 people: this is the 10th 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.
Villejust is the youngest (37.2); Prayssac the oldest (62.3).
Older than Marsonnas: 5 of the 6 towns nearby
The nearest towns of 2,500 or more, colored by median age. Source: INSEE, census 2023.
| Town | Median age | 65+ | Second homes | Immigrants |
|---|---|---|---|---|
| Marsonnas | 42.7 | 18% | 3.5% | 2.2% |
| Montrevel-en-Bresse 2,743 · 2.4 mi | 49.6 | 31% | 2.3% | 4.4% |
| Bâgé-Dommartin 4,050 · 5.5 mi | 43.6 | 19% | 1.7% | 3.1% |
| Attignat 3,409 · 5.9 mi | 42.1 | 19% | 1.2% | 3.7% |
| Polliat 2,741 · 6.9 mi | 45.7 | 24% | 1.2% | 2.6% |
| Feillens 3,411 · 8.5 mi | 43.9 | 24% | 1.3% | 4.9% |
| Vonnas 3,255 · 9.1 mi | 45 | 25% | 2.3% | 7% |
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 Marsonnas
What is the population of Marsonnas?
1,039 at INSEE’s 2023 census, 3% more than in 2012 (1,009).
How old are Marsonnas’ residents?
The median age is 42.7, younger than 60% of compared French towns. 25% are under 18 and 18% 65 or older.
How many second homes are there in Marsonnas?
17, with occasional dwellings: 3.5% of all homes, against 2.1% for the median compared French town.
How many immigrants live in Marsonnas?
INSEE counts 23 immigrants (born abroad, not French at birth), 2.2% of residents, and 9 foreign nationals (0.9%). The medians of compared French towns are 6.5% and 4.3%.
What is the median income in Marsonnas?
€26,720 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 October 30, 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.