36% of households are couples with children, more than in 94% of compared French towns
Against a figure of 9.4% in the typical compared French town, the share of households headed by a manager or professional in Thiennes comes in at 2.7%. In 2023, the Census found 920 residents locally, living in 370 households. For Thiennes, the census puts flats at 3.2%. Compared with other places, households without a car are scarce here: 7.2%, fewer than in 71% of compared French towns.
Throughout this page, the Nord 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 Thiennes
A town of families
36% of households are couples with children and 9.4% single parents with children; 23% of residents are under 15. Households ↓
A young town
Half of Thiennes’ residents are under 37.6 and half over; the median of compared French towns is 44. 23% are under 15 and 15% are 65 or older. Ages ↓
Written from INSEE’s census 2023 on this page, against compared French towns.
+8% since 2012, a pace 62% of compared French towns didn’t match
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 Nord town changed ±0% and the median compared French town +5%; here the first five years brought +6% and the next six +1%.
A median age of 37.6: Thiennes is younger than 89% 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
■ Thiennes 37.6. The median compared French town: 44.
Residents aged 65 and over: 15% here and 22% 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: Nord 51.9%, France 51.8%.
One-person households make up 26% in Thiennes, less than in 93% 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 Nord median and the France median
Living alone · share
A household here holds 2.5 people on average. On average, 35% of households are one person living alone in the typical compared French town. Single-parent households make up 9.4%, close to the figure in the typical compared French town.
In Thiennes, 2.8% of households rent social housing (HLM), fewer than in 94% 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
Households that moved in under two years ago: 7%. Those in their home 30 years or more: 25%. In the typical compared French town, just over one in ten households rent social housing (HLM). At 1.4%, the share of second homes is lower than in 66% of compared French towns. One household in 14 has no car (median compared French town: 11%).
A typical living standard of €24,600 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.
Half of Thiennes’ residents live in households with a standard of living below €24,600 a year per consumption unit, and half above: lower than in 65% of compared French towns.
A larger share of households headed by a manual worker than 99% of compared French towns: 32%
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
Households headed by a retired person make up 25%, against 32% in the typical compared French town. 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).
A lower share of immigrants than 99% of compared French towns, at 0.4%
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%; Thiennes has 0.2%. The benchmark for immigrants in the typical compared French town: 6.5%.
INSEE publishes no country of birth or ethnicity by commune in these tables, and the census doesn’t ask about religion.
In Thiennes, 20% of residents 15 and over are single, fewer than in 92% 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
43% of residents 15 and over are married in the typical compared French town, against 41% in Thiennes. In the typical compared French town, single residents come to 25%.
26% of adults out of school hold a higher-education qualification, below 65% of compared French towns
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
Adults with no qualification: 16% here and 19% in the typical compared French town. Typically, 30% of adults out of school hold a higher-education qualification in the typical compared French town.
2nd lowest median age among 41 French towns of 920 to 2,582
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.
Thiennes is younger than every town around it
The nearest towns of 2,500 or more, colored by median age. Source: INSEE, census 2023.
| Town | Median age | 65+ | Second homes | Immigrants |
|---|---|---|---|---|
| Thiennes | 37.6 | 15% | 1.4% | 0.4% |
| Isbergues 8,650 · 2.4 mi | 46.1 | 25% | 1.2% | 0.8% |
| Aire-sur-la-Lys 9,598 · 3.3 mi | 45.5 | 22% | 0.4% | 1% |
| Morbecque 2,573 · 3.5 mi | 44.5 | 22% | 1.4% | 1.2% |
| Saint-Venant 2,999 · 3.6 mi | 46.9 | 25% | 1.4% | 2% |
| Hazebrouck 21,912 · 5.9 mi | 43.3 | 23% | 1% | 3.1% |
| Lillers 10,193 · 6.2 mi | 40.8 | 20% | 0.5% | 1.9% |
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 Thiennes
What is the population of Thiennes?
920 at INSEE’s 2023 census, 8% more than in 2012 (855).
How old are Thiennes’ residents?
The median age is 37.6, younger than 89% of compared French towns. 27% are under 18 and 15% 65 or older.
How many second homes are there in Thiennes?
6, with occasional dwellings: 1.4% of all homes, against 2.1% for the median compared French town.
How many immigrants live in Thiennes?
INSEE counts 4 immigrants (born abroad, not French at birth), 0.4% 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 Thiennes?
€24,600 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.