Second homes: 41%, a higher share than 96% of compared French towns
Households headed by a manual worker: 35% here and 14% in the typical compared French town. Lanchères is home to 859 residents in 400 households, by the 2023 Census. Here, 0.2% of homes are flats. Half of the town’s residents are over 49.7, older than in just over four fifths of compared French towns.
Throughout this page, the Somme 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 Lanchères
One home in two is a second home
The census counted 320 second homes and occasional dwellings in Lanchères, 41% of its 780 homes: higher than in 96% of compared French towns. 29% 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
Lanchères had 962 residents at the 2012 census and 859 in 2023, down 11%: slower growth than in 98% of compared French towns. Population ↓
Written from INSEE’s census 2023 on this page, against compared French towns.
A lower share of households without a car than 64% of compared French towns, at 8.4%
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
Households in social housing are rarer here than in 99% of compared French towns. The wider picture: 11% of households have no car in the typical compared French town. Across Lanchères, nearly one in ten homes stand empty.
From 2012 to 2023, 98% of compared French towns grew faster than Lanchères: −11%
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 same years the median compared French town changed +5%, the median Somme town −3%.
Residents aged 65 and over make up 25% in Lanchères, more than in 66% 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
■ Lanchères 49.7. The median compared French town: 44.
Residents aged 15 to 24: 9.4% here and 11% in the typical compared French town. As a reference point, 22% of residents are 65 or over in the typical compared French town.
Women and men · all residents
49% women, 51% men
About 104 men for every 100 women. Median share of women: Somme 52.5%, France 51.8%.
One-person households: 31%, a lower share than 72% 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 Somme median and the France median
Living alone · share
The typical household size is 2.2 people. Lanchères has fewer single-parent households than 68% of compared French towns, at 8.9%. Set beside that, just over a third of households are one person living alone in the typical compared French town. Across Lanchères, just over a quarter of households are couples with children.
Median living standard: €23,950 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.
Living standards centre on €23,950 a year per consumption unit: lower than in 72% of compared French towns.
Households headed by a manager or professional make up 5.2% in Lanchères, less than in 84% 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
31% of households are headed by a retired person (typical compared French town: 32%). Households headed by a manager or professional: 9.4% in the typical compared French town, for comparison.
Each household is counted once, by the occupation of its reference person (usually the oldest working adult).
A smaller share of immigrants than 99% of compared French towns: 0.8%
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 share of foreign nationals trails 97% of compared French towns: 0.8%. Measured more widely, 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.
Below 75% of compared French towns: 23% 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 account for 44%. Measured more widely, 25% of residents 15 and over are single in the typical compared French town.
A smaller share of graduates of higher education than 96% of compared French towns: 16%
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
Set against 19% in the typical compared French town, 31% of adults out of school have no qualification in Lanchères. By way of comparison, 30% of adults out of school hold a higher-education qualification in the typical compared French town.
Of 41 French towns its size (859 to 2,582 people), the 14th 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.
Lanchères is younger than 4 of its 6 nearest neighbors
The nearest towns of 2,500 or more, colored by median age. Source: INSEE, census 2023.
| Town | Median age | 65+ | Second homes | Immigrants |
|---|---|---|---|---|
| Lanchères | 49.7 | 25% | 41% | 0.8% |
| Friville-Escarbotin 4,306 · 5.3 mi | 47.5 | 26% | 2.8% | 1.7% |
| Rue 2,987 · 9.3 mi | 53.8 | 35% | 11% | 1.3% |
| Mers-les-Bains 2,540 · 9.7 mi | 58.3 | 38% | 50% | 1.7% |
| Eu 6,499 · 9.8 mi | 55.2 | 35% | 5.9% | 2.8% |
| Le Tréport 4,378 · 10.7 mi | 53.2 | 32% | 37% | 1.8% |
| Abbeville 22,395 · 13.1 mi | 47.1 | 25% | 1.5% | 2.7% |
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 Lanchères
What is the population of Lanchères?
859 at INSEE’s 2023 census, 11% fewer than in 2012 (962).
How old are Lanchères’ residents?
The median age is 49.7, older than 82% of compared French towns. 18% are under 18 and 25% 65 or older.
How many second homes are there in Lanchères?
320, with occasional dwellings: 41% of all homes, against 2.1% for the median compared French town.
How many immigrants live in Lanchères?
INSEE counts 7 immigrants (born abroad, not French at birth), 0.8% of residents, and 7 foreign nationals (0.8%). The medians of compared French towns are 6.5% and 4.3%.
What is the median income in Lanchères?
€23,950 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.