Only 1.9% of homes are flats in Longroy
2.1% of homes are second homes in the typical compared French town, against 7.4% in Longroy. Census figures put households headed by a manual worker at 24% here. Households in social housing are rarer here than in 99% of compared French towns. In 2023, the Census found 637 residents here, living in 280 households.
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.
A change of −4% since 2012 leaves Longroy behind 84% 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
Older than 84% of compared French towns: half of Longroy is over 50.3
Shares of residents by age at the 2023 census.
Age groups · share of residents
Median age of the 3,798 compared French towns
■ Longroy 50.3. The median compared French town: 44.
Compared with 22% in the typical compared French town, a quarter of residents are 65 or over here. Longroy has fewer residents aged 15 to 24 than just over two thirds of compared French towns, at 9.8%.
Women and men · all residents
51% women, 49% men
About an even split. Median share of women: Seine-Maritime 52.8%, France 51.8%.
Longroy ranks below 93% of compared French towns on one-person households: 25%
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
Here 27% of households are couples with children, where the figure in the typical compared French town is 25%. Across the comparison, just over a third of households are one person living alone in the typical compared French town. Households here average 2.3 people each.
Longroy sits below 77% of compared French towns for households without a car (6.4%)
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
33% of households have been in place 30 years or more; 2.7% moved in within the last two years. By way of comparison, 11% of households have no car in the typical compared French town. Empty homes are about as common here as in the typical compared French town: 6.2%.
A median standard of living of €24,770 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.
Per consumption unit, half of residents live on more than €24,770 a year: lower than in 63% of compared French towns.
3.5% of households are headed by a manager or professional, fewer than in 95% 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
32% of households are headed by a retired person in the typical compared French town, against 34% in Longroy. The benchmark for households headed by a manager or professional in the typical compared French town: 9.4%.
Each household is counted once, by the occupation of its reference person (usually the oldest working adult).
Longroy sits below 99% of compared French towns for immigrants (0.7%)
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 0.6% in Longroy and 4.3% in the typical compared French town. Elsewhere, 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.
54% of residents 15 and over are married, more than in 98% 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
In Longroy, nearly a fifth of residents 15 and over are single, beside 25% in the typical compared French town. The share of married residents in the typical compared French town is 43%.
A lower share of graduates of higher education than 91% of compared French towns, at 18%
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: 29% here and 19% in the typical compared French town. Against that, 30% of adults out of school hold a higher-education qualification in the typical compared French town.
14th highest median age among 41 French towns of 637 to 2,582
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).
5 of 6 neighbors are older than Longroy
The nearest towns of 2,500 or more, colored by median age. Source: INSEE, census 2023.
| Town | Median age | 65+ | Second homes | Immigrants |
|---|---|---|---|---|
| Longroy | 50.3 | 25% | 7.4% | 0.7% |
| Blangy-sur-Bresle 2,819 · 5.4 mi | 51.1 | 30% | 1.8% | 2% |
| Friville-Escarbotin 4,306 · 6.8 mi | 47.5 | 26% | 2.8% | 1.7% |
| Eu 6,499 · 6.8 mi | 55.2 | 35% | 5.9% | 2.8% |
| Mers-les-Bains 2,540 · 8.5 mi | 58.3 | 38% | 50% | 1.7% |
| Le Tréport 4,378 · 8.8 mi | 53.2 | 32% | 37% | 1.8% |
| Criel-sur-Mer 2,527 · 10.1 mi | 54.9 | 33% | 44% | 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 Longroy
What is the population of Longroy?
637 at INSEE’s 2023 census, 4% fewer than in 2012 (663).
How old are Longroy’s residents?
The median age is 50.3, older than 84% of compared French towns. 18% are under 18 and 25% 65 or older.
How many second homes are there in Longroy?
24, with occasional dwellings: 7.4% of all homes, against 2.1% for the median compared French town.
How many immigrants live in Longroy?
INSEE counts 5 immigrants (born abroad, not French at birth), 0.7% of residents, and 4 foreign nationals (0.6%). The medians of compared French towns are 6.5% and 4.3%.
What is the median income in Longroy?
€24,770 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 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.