Saint-Léonard sits below 96% of compared French towns for empty homes (2.9%)
27% of households are one person living alone; in the typical compared French town the figure is 35%. Flats: 5.3% of the total. Fewer households headed by a manual worker than in 78% of compared French towns: 9.7%. Saint-Léonard’s 1,390 households held 3,353 residents at the 2023 Census.
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 Saint-Léonard
Fewer residents than in 2012
Saint-Léonard had 3,616 residents at the 2012 census and 3,353 in 2023, down 7%: slower growth than in 93% of compared French towns. Population ↓
Written from INSEE’s census 2023 on this page, against compared French towns.
A −7% change since 2012: slower than 93% 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 −5%, and from 2017 to 2023 −3%; the median compared French town changed +5% and the median Pas-de-Calais town −1%.
Saint-Léonard is older than 79% of compared French towns: a median age of 49
Shares of residents by age at the 2023 census.
Age groups · share of residents
Median age of the 3,798 compared French towns
■ Saint-Léonard 49. The median compared French town: 44.
Where just over a fifth of residents are 65 or over in the typical compared French town, Saint-Léonard has 27%. Across Saint-Léonard, nearly one in ten residents are 15 to 24.
Women and men · all residents
53% women, 47% men
About 87 men for every 100 women. Median share of women: Pas-de-Calais 52.0%, France 51.8%. Women live longer than men, so towns with many older residents have more women.
Saint-Léonard sits above 78% of compared French towns for couples with children (31%)
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
Each household has 2.3 people on average. For comparison, 25% of households are couples with children in the typical compared French town. Few places have so few single-parent households: 8.3% here, fewer than in 77% of compared French towns.
Households without a car make up 8.3% in Saint-Léonard, less than in 65% of compared French towns
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
Some 5% of households are newcomers of under two years, against 35% who have been there 30 years or more. In the typical compared French town, just over one in ten households have no car. Put another way, about one in 67: 1.5% of homes are second homes.
A typical living standard of €25,100 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.
The median standard of living in Saint-Léonard is €25,100 a year per consumption unit: lower than in 59% of compared French towns. 11.0% of residents have a standard of living below 60% of France’s median.
Households headed by a retired person: 38%, a higher share than 78% 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
Compared with 9.4% in the typical compared French town, 12% of households are headed by a manager or professional here. In the typical compared French town, households headed by a retired person come to 32%.
Each household is counted once, by the occupation of its reference person (usually the oldest working adult).
A smaller share of immigrants than 97% of compared French towns: 1.5%
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.
Foreign nationals: 0.8%, below 97% of compared French towns. On average, 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.
Only 22% of residents 15 and over are single in Saint-Léonard
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
By its share of married residents (47%), Saint-Léonard is above just over four fifths of compared French towns. Against that, 25% of residents 15 and over are single in the typical compared French town.
Above 69% of compared French towns: 23% of adults out of school have no qualification
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
Graduates of higher education: 26% here and 30% in the typical compared French town. For comparison, nearly a fifth of adults out of school have no qualification in the typical compared French town.
Ranked by age, 8th oldest of 41 French towns this size
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 36.4 in Saint-Maximin to 64.9 in Saint-Cast-le-Guildo.
Every neighbor is younger than Saint-Léonard
The nearest towns of 2,500 or more, colored by median age. Source: INSEE, census 2023.
| Town | Median age | 65+ | Second homes | Immigrants |
|---|---|---|---|---|
| Saint-Léonard | 49 | 27% | 1.5% | 1.5% |
| Saint-Étienne-au-Mont 5,029 · 1.2 mi | 41.4 | 18% | 1.2% | 1.3% |
| Outreau 13,138 · 1.8 mi | 43.2 | 22% | 1% | 1.4% |
| Saint-Martin-Boulogne 10,888 · 2.3 mi | 47.2 | 25% | 1.4% | 2.1% |
| Boulogne-sur-Mer 40,539 · 2.4 mi | 39.8 | 20% | 3.9% | 5.2% |
| Le Portel 8,768 · 2.5 mi | 44 | 21% | 5.1% | 1.1% |
| Équihen-Plage 2,619 · 2.6 mi | 44.6 | 22% | 17% | 0.8% |
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 Saint-Léonard
What is the population of Saint-Léonard?
3,353 at INSEE’s 2023 census, 7% fewer than in 2012 (3,616).
How old are Saint-Léonard’s residents?
The median age is 49, older than 79% of compared French towns. 20% are under 18 and 27% 65 or older.
How many second homes are there in Saint-Léonard?
22, with occasional dwellings: 1.5% of all homes, against 2.1% for the median compared French town.
How many immigrants live in Saint-Léonard?
INSEE counts 49 immigrants (born abroad, not French at birth), 1.5% of residents, and 27 foreign nationals (0.8%). The medians of compared French towns are 6.5% and 4.3%.
What is the median income in Saint-Léonard?
€25,100 a year per consumption unit in 2023 (median of compared French towns €25,970); 11.0% of residents live below the poverty line. 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.