16% of homes are second homes, more than in 92% of compared French towns
Flats are rarer here than in 99% of compared French towns. At the 2023 Census, 1,210 people lived in Serques, in 510 households. Put another way, about one in 18: 5.7% of households are single parents. Set against 11% in the typical compared French town, 4.5% of households have no car locally.
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 Serques
One home in six is a second home
The census counted 110 second homes and occasional dwellings in Serques, 16% of its 650 homes: higher than in 92% of compared French towns. 72% of them are houses. Their owners live elsewhere, so they aren’t in the population figures on this page. Homes & cars ↓
Written from INSEE’s census 2023 on this page, against compared French towns.
Serques ranks below 96% of compared French towns on households in social housing: 2.4%
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
4.1% of homes stand empty; in the typical compared French town the figure is 6.7%. Set beside that, just over one in ten households rent social housing (HLM) in the typical compared French town. Long tenure is the mark of 24% of households (30 years or more), short tenure of 6% (under two years).
Since 2012, Serques has grown +7%, faster than 59% 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
Medians for comparison: +5% across compared French towns, −1% in Pas-de-Calais.
Below 71% of compared French towns: 19% of residents are 65 or over
Shares of residents by age at the 2023 census.
Age groups · share of residents
Median age of the 3,798 compared French towns
■ Serques 44.9. The median compared French town: 44.
The median age in Serques is 44.9, higher than in 56% of compared French towns. Across Serques, 9% of residents are 15 to 24. Typically, 22% of residents are 65 or over in the typical compared French town.
Women and men · all residents
49% women, 51% men
About 105 men for every 100 women. Median share of women: Pas-de-Calais 52.0%, France 51.8%.
Serques ranks below 89% of compared French towns on one-person households: 27%
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
Average household size: 2.4 people. Set beside that, just over a third of households are one person living alone in the typical compared French town. Serques has more couples with children than 83% of compared French towns, at 32%.
€26,410 a year is the median standard of living here
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 Serques is €26,410 a year per consumption unit: higher than in 55% of compared French towns.
Households headed by a manual worker make up 24% in Serques, more than in 94% 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
The share of households headed by a manager or professional is 11%, against 9.4% in the typical compared French town. Households headed by a manual worker make up 14% in the typical compared French town. On the census count, 30% of households are headed by a retired person.
Each household is counted once, by the occupation of its reference person (usually the oldest working adult).
Only 0.5% of residents are immigrants in Serques
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.
Against a figure of 4.3% in the typical compared French town, the share of foreign nationals in Serques comes in at 0.2%. Immigrants make up a share lower than in 99% of compared French towns; the median compared commune in Pas-de-Calais has 1.7%. As a yardstick, 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.
In Serques, 49% of residents 15 and over are married, more than in 87% 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
Single residents make up 21%, against 25% in the typical compared French town. Across the comparison, 43% of residents 15 and over are married in the typical compared French town.
A lower share of adults with no qualification than 69% of compared French towns, at 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
Locally, 29% of adults out of school hold a higher-education qualification. For comparison, 19% of adults out of school have no qualification in the typical compared French town.
Ranked by age, 18th youngest 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.
Villejust is the youngest (37.2); Prayssac the oldest (62.3).
Around Serques, 1 of 6 towns have a higher 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 |
|---|---|---|---|---|
| Serques | 44.9 | 19% | 16% | 0.5% |
| Éperlecques 3,737 · 2.2 mi | 39.8 | 18% | 3.4% | 0.5% |
| Watten 2,564 · 2.6 mi | 43 | 23% | 2.9% | 1% |
| Saint-Martin-lez-Tatinghem 5,843 · 3.1 mi | 47.1 | 25% | 1% | 2.7% |
| Saint-Omer 14,382 · 3.7 mi | 36.7 | 17% | 2.4% | 5.5% |
| Longuenesse 10,548 · 4.5 mi | 43.2 | 22% | 0.6% | 6.8% |
| Arques 9,431 · 5.8 mi | 43.9 | 21% | 1% | 2.8% |
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 Serques
What is the population of Serques?
1,210 at INSEE’s 2023 census, 7% more than in 2012 (1,130).
How old are Serques’ residents?
The median age is 44.9, older than 56% of compared French towns. 20% are under 18 and 19% 65 or older.
How many second homes are there in Serques?
110, with occasional dwellings: 16% of all homes, against 2.1% for the median compared French town.
How many immigrants live in Serques?
INSEE counts 6 immigrants (born abroad, not French at birth), 0.5% of residents, and 2 foreign nationals (0.2%). The medians of compared French towns are 6.5% and 4.3%.
What is the median income in Serques?
€26,410 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.