Trefcon sits below 99% of compared French towns for households without a car (2.9%)
The figure for households headed by a retired person is 17% in Trefcon and 32% in the typical compared French town. For Trefcon, the census puts flats at 5.4%. Fewer residents aged 15 to 24 than in 85% of compared French towns: 8.8%. 80 residents in 34 households: that is Trefcon at the 2023 Census.
Throughout this page, the Aisne 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 Trefcon
Fewer residents than in 2012
Trefcon had 89 residents at the 2012 census and 80 in 2023, down 10%: slower growth than in 97% of compared French towns. Population ↓
A town of families
33% of households are couples with children and 0% single parents with children; 21% of residents are under 15. Households ↓
Written from INSEE’s census 2023 on this page, against compared French towns.
−10% since 2012, a pace below 97% 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
For comparison, the median compared French town changed +5% and the median Aisne town −4%.
Half of Trefcon is under 42.7, younger than 61% 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
■ Trefcon 42.7. The median compared French town: 44.
Compared with 22% in the typical compared French town, 24% of residents are 65 or over here.
Women and men · all residents
55% women, 45% men
About 82 men for every 100 women. Median share of women: Aisne 52.5%, France 51.8%.
Trefcon ranks above 88% of compared French towns on couples with children: 33%
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 Aisne median and the France median
Living alone · share
In the typical compared French town, 35% of households are one person living alone; in Trefcon, 33%. The comparison figure for couples with children is 25% in the typical compared French town. The average household has 2.4 people. Single-parent households are rarer here than in 99% of compared French towns.
Below 69% of compared French towns: 5.4% of homes stand empty
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
Second homes: 2.7%, near enough the figure in the typical compared French town. Households in social housing are rarer here than in 99% of compared French towns. Set beside that, 6.7% of homes stand empty in the typical compared French town.
In Trefcon, 17% of households are headed by a manager or professional, more than in 81% 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
Households headed by a manual worker are rarer here than in 99% of compared French towns. By way of comparison, nearly one in ten households are headed by a manager or professional in the typical compared French town.
Each household is counted once, by the occupation of its reference person (usually the oldest working adult).
0% of residents in Trefcon are immigrants
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.
Immigrants are rarer here than in 99% of compared French towns.
INSEE publishes no country of birth or ethnicity by commune in these tables, and the census doesn’t ask about religion.
Trefcon ranks above 99% of compared French towns on married residents: 56%
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
21% of residents 15 and over are single (typical compared French town: 25%). Married residents make up 43% in the typical compared French town.
Graduates of higher education make up 43% in Trefcon, more than in 84% 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
16% of adults out of school have no qualification (typical compared French town: 19%). In the typical compared French town, graduates of higher education come to 30%.
41 French towns of 80 to 2,582 people: this is the 10th 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.
At the ends of the range sit Villejust (37.2), the youngest, and Prayssac (62.3), the oldest.
4 in 6 nearby towns have a higher median age than Trefcon
The nearest towns of 2,500 or more, colored by median age. Source: INSEE, census 2023.
| Town | Median age | 65+ | Second homes | Immigrants |
|---|---|---|---|---|
| Trefcon | 42.7 | 24% | 2.7% | 0% |
| Ham 4,378 · 7.7 mi | 45.8 | 25% | 1% | 2.8% |
| Gauchy 5,183 · 8.6 mi | 47.7 | 24% | 0.4% | 4% |
| Saint-Quentin 52,813 · 8.7 mi | 41.3 | 23% | 1.6% | 9% |
| Péronne 7,090 · 8.8 mi | 48.6 | 28% | 1.4% | 4.3% |
| Fresnoy-le-Grand 2,890 · 15.7 mi | 44.1 | 23% | 1.2% | 2.7% |
| Tergnier 13,045 · 16.4 mi | 42.5 | 21% | 1% | 6.7% |
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 Trefcon
What is the population of Trefcon?
80 at INSEE’s 2023 census, 10% fewer than in 2012 (89).
How old are Trefcon’s residents?
The median age is 42.7, younger than 61% of compared French towns. 23% are under 18 and 24% 65 or older.
How many second homes are there in Trefcon?
1, with occasional dwellings: 2.7% of all homes, against 2.1% for the median compared French town.
How many immigrants live in Trefcon?
INSEE counts 0 immigrants (born abroad, not French at birth), 0% of residents, and 0 foreign nationals (0%). The medians of compared French towns are 6.5% and 4.3%.
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.