Half of Longmesnil is over 56.2, older than 95% of compared French towns
Flats are rarer here than in 99% of compared French towns. The share of households headed by a manual worker stands at 25%. 45 residents in 21 households: that is Longmesnil at the 2023 Census. Little separates the share of empty homes here, 7.5%, from the figure in the typical compared French town.
Throughout this page, the Seine-Maritime 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 Longmesnil
One home in five is a second home
The census counted 5 second homes and occasional dwellings in Longmesnil, 19% of its 29 homes: higher than in 93% of compared French towns. 100% of them are houses. Their owners live elsewhere, so they aren’t in the population figures on this page. Homes & cars ↓
Fewer residents than in 2012
Longmesnil had 56 residents at the 2012 census and 45 in 2023, down 20%: slower growth than in 99% of compared French towns. Population ↓
An older town
Half of Longmesnil’s residents are under 56.2 and half over; the median of compared French towns is 44. 27% are 65 or older (France median 22%), 4.5% 80 or older. Ages ↓
Many people living alone
50% of Longmesnil’s households are one person: higher than in 94% of compared French towns; 33% of residents 65 and over live alone. Households ↓
Written from INSEE’s census 2023 on this page, against compared French towns.
Longmesnil ranks above 93% of compared French towns on second homes: 19%
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. In the typical compared French town, second homes come to 2.1%.
Since 2012, Longmesnil has changed by −20%, slower than 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
From 2012 to 2017 the population moved −7%, and from 2017 to 2023 −13%; the median compared French town changed +5% and the median Seine-Maritime town ±0%.
Residents aged 15 to 24 make up 14% in Longmesnil, more than in 91% 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
■ Longmesnil 56.2. The median compared French town: 44.
27% of residents are 65 or over (typical compared French town: 22%). As a reference point, 11% of residents are 15 to 24 in the typical compared French town.
Women and men · all residents
55% women, 45% men
About 83 men for every 100 women. Median share of women: Seine-Maritime 52.8%, France 51.8%. Women live longer than men, so towns with many older residents have more women.
Above 94% of compared French towns: 50% of households are one person living alone
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 Seine-Maritime median and the France median
Living alone · share
Households here average 2.1 people each. The usual figure: just over a third of households are one person living alone in the typical compared French town. Single-parent households are rarer here than in 99% of compared French towns. Little separates the share of couples with children here, 25%, from the figure in the typical compared French town.
Longmesnil sits above 97% of compared French towns for households headed by a retired person (50%)
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. The wider picture: 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).
Immigrants: 2.3%, a lower share than 89% 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.
Set against 4.3% in the typical compared French town, 2.3% of residents are foreign nationals in Longmesnil. The wider picture: 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.
Longmesnil: 58% 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
20% of residents 15 and over are single (typical compared French town: 25%). Married residents: 43% in the typical compared French town, for comparison.
Graduates of higher education: 34%, a higher share than 64% 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
Here, 18% of adults out of school have no qualification. Typically, 30% of adults out of school hold a higher-education qualification in the typical compared French town.
Of 41 French towns its size (45 to 2,582 people), the 5th oldest
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 37.2 in Villejust to 62.3 in Prayssac.
Longmesnil 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 |
|---|---|---|---|---|
| Longmesnil | 56.2 | 27% | 19% | 2.3% |
| Forges-les-Eaux 3,642 · 3 mi | 55.9 | 36% | 2.7% | 2.1% |
| Neufchâtel-en-Bray 4,662 · 10.8 mi | 51.7 | 34% | 1.3% | 1.2% |
| Gournay-en-Bray 5,723 · 10.8 mi | 51.9 | 31% | 1.4% | 4.4% |
| Buchy 2,815 · 11.9 mi | 45.9 | 25% | 1.8% | 0.9% |
| Grandvilliers 2,786 · 15.1 mi | 51.1 | 31% | 2% | 2.6% |
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 Longmesnil
What is the population of Longmesnil?
45 at INSEE’s 2023 census, 20% fewer than in 2012 (56).
How old are Longmesnil’s residents?
The median age is 56.2, older than 95% of compared French towns. 9.1% are under 18 and 27% 65 or older.
How many second homes are there in Longmesnil?
5, with occasional dwellings: 19% of all homes, against 2.1% for the median compared French town.
How many immigrants live in Longmesnil?
INSEE counts 1 immigrants (born abroad, not French at birth), 2.3% of residents, and 1 foreign nationals (2.3%). The medians of compared French towns are 6.5% and 4.3%.
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.