More couples with children than 99% of compared French towns: 41%
14% of households are headed by a manual worker in the typical compared French town, against 27% in Mennessis. At the 2023 Census, 419 people lived in the town, in 160 households. The share of households without a car stands at 7.5%. Few places have as many second homes: 3% here, more than in 62% of compared French towns.
Throughout this page, the Aisne 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 Mennessis
A town of families
41% of households are couples with children and 3.1% single parents with children; 21% of residents are under 15. Households ↓
A young town
Half of Mennessis’ residents are under 38.8 and half over; the median of compared French towns is 44. 21% are under 15 and 15% are 65 or older. Ages ↓
Written from INSEE’s census 2023 on this page, against compared French towns.
Mennessis changed by −1% from 2012 to 2023, behind 73% 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
Over the whole period the median compared French town changed +5%, and the median Aisne town −4%. The years 2012 to 2017 brought −3%; 2017 to 2023, +3%.
Mennessis is younger than 85% of compared French towns: a median age of 38.8
Shares of residents by age at the 2023 census.
Age groups · share of residents
Median age of the 3,798 compared French towns
■ Mennessis 38.8. The median compared French town: 44.
With residents aged 65 and over at 15%, Mennessis is behind 89% of compared French towns on that count.
Women and men · all residents
50% women, 50% men
About an even split. Median share of women: Aisne 52.5%, France 51.8%.
Single-parent households: 3.1%, a lower share than 99% 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 Aisne median and the France median
Living alone · share
Each household has 2.5 people on average. Across the comparison, one in ten households are single parents in the typical compared French town. One-person households are rarer here than in 93% of compared French towns.
100% of homes are houses
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 in social housing are rarer here than in 99% of compared French towns. 7.2% of households arrived within the last two years, while 26% have stayed 30 years or more. At 6.1%, the share of empty homes is in line with the figure in the typical compared French town.
€24,420 a year is the median standard of living here
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.
Living standards centre on €24,420 a year per consumption unit: lower than in 67% of compared French towns.
Below 73% of compared French towns: 28% of households are headed by a retired person
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 manager or professional are rarer here than in 99% of compared French towns. Set beside that, nearly a third of households are headed by a retired person in the typical compared French town.
Each household is counted once, by the occupation of its reference person (usually the oldest working adult).
In Mennessis, 1.2% of residents are immigrants, fewer than in 99% 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 figure for foreign nationals is 0.7% in Mennessis and 4.3% in the typical compared French town. The wider picture: 6.5% of residents are immigrants in the typical compared French town. The median compared commune in Aisne has 5.7%; immigrants here make up a share lower than in 99% of compared French towns.
INSEE publishes no country of birth or ethnicity by commune in these tables, and the census doesn’t ask about religion.
Below 77% of compared French towns: 22% of residents 15 and over are single
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
Married residents come to 42% in Mennessis, about four in ten. Across the comparison, 25% of residents 15 and over are single in the typical compared French town.
17% of adults out of school hold a higher-education 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
Adults with no qualification: 20% of the total. By way of comparison, 30% of adults out of school hold a higher-education qualification in the typical compared French town.
Among 41 French towns of 419 to 2,582 people, the 2nd 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).
Mennessis is younger than every town around it
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 Mennessis
What is the population of Mennessis?
419 at INSEE’s 2023 census, about the same as in 2012 (422).
How old are Mennessis’ residents?
The median age is 38.8, younger than 85% of compared French towns. 27% are under 18 and 15% 65 or older.
How many second homes are there in Mennessis?
6, with occasional dwellings: 3% of all homes, against 2.1% for the median compared French town.
How many immigrants live in Mennessis?
INSEE counts 5 immigrants (born abroad, not French at birth), 1.2% of residents, and 3 foreign nationals (0.7%). The medians of compared French towns are 6.5% and 4.3%.
What is the median income in Mennessis?
€24,420 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.