Fewer flats than 99% of compared French towns: 0.4%
In the typical compared French town, the share of one-person households is 35%; Fléchin has 29%. At the 2023 Census, 469 people lived locally, in 200 households. Across Fléchin, 2.4% of households are headed by a manager or professional. Compared with other places, residents aged 15 to 24 are scarce here: 8.4%, fewer than in 89% of compared French towns.
Throughout this page, the Pas-de-Calais 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 Fléchin
Fewer residents than in 2012
Fléchin had 506 residents at the 2012 census and 469 in 2023, down 7%: slower growth than in 94% of compared French towns. Population ↓
A town of families
33% of households are couples with children and 2.5% single parents with children; 21% of residents are under 15. Households ↓
Empty homes
The census found 30 homes empty (13%): for sale, to let, awaiting work or simply unused. Homes & cars ↓
Written from INSEE’s census 2023 on this page, against compared French towns.
−7% since 2012: slower than 94% 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
Between 2012 and 2017 the population moved −5%, then −2% to 2023.
Younger than 74% of compared French towns: half of Fléchin is under 40.8
Shares of residents by age at the 2023 census.
Age groups · share of residents
Median age of the 3,798 compared French towns
■ Fléchin 40.8. The median compared French town: 44.
For Fléchin, the census puts residents aged 65 and over at 22%.
Women and men · all residents
49% women, 51% men
About an even split. Median share of women: Pas-de-Calais 52.0%, France 51.8%.
Single-parent households: 2.5%, 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 Pas-de-Calais median and the France median
Living alone · share
The share of couples with children tops 88% of compared French towns: 33%. Against that, one in ten households are single parents in the typical compared French town. A household here holds 2.3 people on average.
A higher share of empty homes than 90% of compared French towns, at 13%
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
11% of households have no car in the typical compared French town, against 13% in Fléchin. Households in social housing are rarer here than in 99% of compared French towns. On average, 6.7% of homes stand empty in the typical compared French town. Recent arrivals (under two years) make up 8% of households; long-stayers (30 years or more) 33%.
A median of €22,860 a year per consumption unit
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.
The median standard of living in Fléchin is €22,860 a year per consumption unit: lower than in 83% of compared French towns.
Households headed by a manual worker: 27%, a higher share than 99% 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
Here, a third of households are headed by a retired person. As a yardstick, 14% of households are headed by a manual worker in the typical compared French town.
Each household is counted once, by the occupation of its reference person (usually the oldest working adult).
In Fléchin, 1.3% of residents are immigrants, fewer than in 98% 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.
In the typical compared French town, the share of foreign nationals is 4.3%; Fléchin has 0.6%. For comparison, 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.
21% of residents 15 and over are single, fewer than in 86% 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
The census found that 43% of residents 15 and over are married in Fléchin. The share of single residents in the typical compared French town is 25%.
Fewer graduates of higher education than 82% of compared French towns: 21%
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
The figure for adults with no qualification is 22% in Fléchin and 19% in the typical compared French town. As a yardstick, 30% of adults out of school hold a higher-education qualification in the typical compared French town.
Of 41 French towns its size (469 to 2,582 people), the 4th 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.
Ages run from 37.2 in Villejust to 62.3 in Prayssac.
Fléchin sits below 4 of its 6 closest neighbors on median age
The nearest towns of 2,500 or more, colored by median age. Source: INSEE, census 2023.
| Town | Median age | 65+ | Second homes | Immigrants |
|---|---|---|---|---|
| Fléchin | 40.8 | 22% | 2.9% | 1.3% |
| Aire-sur-la-Lys 9,598 · 7.2 mi | 45.5 | 22% | 0.4% | 1% |
| Burbure 2,834 · 8 mi | 43.1 | 20% | 1.2% | 0.7% |
| Cauchy-à-la-Tour 2,593 · 8.1 mi | 44.7 | 23% | 1.2% | 0.8% |
| Lillers 10,193 · 8.4 mi | 40.8 | 20% | 0.5% | 1.9% |
| Isbergues 8,650 · 8.5 mi | 46.1 | 25% | 1.2% | 0.8% |
| Auchel 10,051 · 8.8 mi | 40 | 20% | 0.5% | 1% |
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 Fléchin
What is the population of Fléchin?
469 at INSEE’s 2023 census, 7% fewer than in 2012 (506).
How old are Fléchin’s residents?
The median age is 40.8, younger than 74% of compared French towns. 23% are under 18 and 22% 65 or older.
How many second homes are there in Fléchin?
7, with occasional dwellings: 2.9% of all homes, against 2.1% for the median compared French town.
How many immigrants live in Fléchin?
INSEE counts 6 immigrants (born abroad, not French at birth), 1.3% of residents, and 3 foreign nationals (0.6%). The medians of compared French towns are 6.5% and 4.3%.
What is the median income in Fléchin?
€22,860 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 8, 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.