More second homes than 96% of compared French towns: 36%
Against a figure of 22% in the typical compared French town, the share of residents aged 65 and over in Salperwick comes in at 17%. Households in social housing account for 1.9%. Fewer flats than in 99% of compared French towns: 0.3%. At the 2023 Census Salperwick was home to 521 people in 210 households.
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 Salperwick
One home in three is a second home
The census counted 130 second homes and occasional dwellings in Salperwick, 36% of its 350 homes: higher than in 96% of compared French towns. 15% of them are houses. Their owners live elsewhere, so they aren’t in the population figures on this page. Homes & cars ↓
A town of families
36% of households are couples with children and 14% single parents with children; 18% of residents are under 15. Households ↓
Written from INSEE’s census 2023 on this page, against compared French towns.
3.7% of homes stand empty, below 90% 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
Against a figure of 11% in the typical compared French town, the share of households without a car in Salperwick comes in at 6.2%. As a yardstick, 6.7% of homes stand empty in the typical compared French town. 22% of households have been in place 30 years or more; 7.1% moved in within the last two years.
+2% since 2012, a pace below 61% 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
The median compared French town changed +5% over the same years, the median Pas-de-Calais town −1%.
A median age of 47.1: Salperwick is older than 70% 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
■ Salperwick 47.1. The median compared French town: 44.
In Salperwick, just over one in ten residents are 15 to 24, beside 11% in the typical compared French town.
Women and men · all residents
48% women, 52% men
About 107 men for every 100 women. Median share of women: Pas-de-Calais 52.0%, France 51.8%.
A smaller share of one-person households than 99% of compared French towns: 22%
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 2.5 people on average. In the typical compared French town, the share of one-person households is 35%. Salperwick has more couples with children than 94% of compared French towns, at 36%. Add to that, with single-parent households at 14%, Salperwick is ahead of 93% of compared French towns on that count.
The median resident lives on €26,430 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 Salperwick is €26,430 a year per consumption unit: higher than in 55% of compared French towns.
Salperwick ranks above 74% of compared French towns on households headed by a manager or professional: 14%
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
29% of households are headed by a retired person, against 32% in the typical compared French town. Households headed by a manager or professional make up 9.4% in the typical compared French town. Census figures put households headed by a manual worker at 17% in Salperwick.
Each household is counted once, by the occupation of its reference person (usually the oldest working adult).
Only 1.9% of residents are immigrants in Salperwick
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 1.7% in Salperwick and 4.3% in the typical compared French town. The comparison figure for immigrants is 6.5% 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.
Salperwick: 52% of residents 15 and over are married, above 97% 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
Just over a fifth of residents 15 and over are single (typical compared French town: 25%). Married residents make up 43% in the typical compared French town.
A smaller share of adults with no qualification than 86% of compared French towns: 13%
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 30% in the typical compared French town, 34% of adults out of school hold a higher-education qualification in Salperwick. As a yardstick, 19% of adults out of school have no qualification in the typical compared French town.
Among 41 French towns of 521 to 2,582 people, the 15th 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.
At the ends of the range sit Villejust (37.2), the youngest, and Prayssac (62.3), the oldest.
No nearby town is as old as Salperwick
The nearest towns of 2,500 or more, colored by median age. Source: INSEE, census 2023.
| Town | Median age | 65+ | Second homes | Immigrants |
|---|---|---|---|---|
| Salperwick | 47.1 | 17% | 36% | 1.9% |
| Saint-Martin-lez-Tatinghem 5,843 · 1.4 mi | 47.1 | 25% | 1% | 2.7% |
| Saint-Omer 14,382 · 1.9 mi | 36.7 | 17% | 2.4% | 5.5% |
| Longuenesse 10,548 · 2.7 mi | 43.2 | 22% | 0.6% | 6.8% |
| Éperlecques 3,737 · 4 mi | 39.8 | 18% | 3.4% | 0.5% |
| Arques 9,431 · 4 mi | 43.9 | 21% | 1% | 2.8% |
| Watten 2,564 · 4.1 mi | 43 | 23% | 2.9% | 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 Salperwick
What is the population of Salperwick?
521 at INSEE’s 2023 census, 2% more than in 2012 (511).
How old are Salperwick’s residents?
The median age is 47.1, older than 70% of compared French towns. 23% are under 18 and 17% 65 or older.
How many second homes are there in Salperwick?
130, with occasional dwellings: 36% of all homes, against 2.1% for the median compared French town.
How many immigrants live in Salperwick?
INSEE counts 10 immigrants (born abroad, not French at birth), 1.9% of residents, and 9 foreign nationals (1.7%). The medians of compared French towns are 6.5% and 4.3%.
What is the median income in Salperwick?
€26,430 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.