Septmonts: 35% of households are couples with children, above 93% of compared French towns
9.2% of homes are flats; in the typical compared French town the figure is 30%. In 2023, the Census found 576 residents in Septmonts, living in 240 households. Census figures put second homes at 5.8% in the town. The town has more households headed by a manual worker than 87% of compared French towns, at 21%.
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 Septmonts
A town of families
35% of households are couples with children and 11% single parents with children; 17% of residents are under 15. Households ↓
Written from INSEE’s census 2023 on this page, against compared French towns.
−1% since 2012, a pace below 72% 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 first five years brought −3%; the six to 2023, +3%. For comparison, the median compared French town changed +5% and the median Aisne town −4%.
Older than 57% of compared French towns: half of Septmonts is over 45
Shares of residents by age at the 2023 census.
Age groups · share of residents
Median age of the 3,798 compared French towns
■ Septmonts 45. The median compared French town: 44.
In the typical compared French town, the share of residents aged 15 to 24 is 11%; Septmonts has 12%. Roughly two in ten: just over a fifth of residents are 65 or over.
Women and men · all residents
50% women, 50% men
About an even split. Median share of women: Aisne 52.5%, France 51.8%.
Below 91% of compared French towns: 26% of households are one person living alone
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
On average, 2.4 people share a household. In the typical compared French town, the share of one-person households is 35%. Single-parent households make up 11%, against 10% in the typical compared French town.
Only 5.4% of households rent social housing (HLM) in Septmonts
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
7% of households arrived within the last two years, while 25% have stayed 30 years or more. Compared with other places, households without a car are scarce here: 5.9%, fewer than in just over four fifths of compared French towns. In the typical compared French town, households in social housing come to 12%. At 6.2%, empty homes sit close to the figure in the typical compared French town.
The middle resident’s standard of living: €25,860 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 Septmonts is €25,860 a year per consumption unit: lower than in 51% of compared French towns.
Septmonts ranks above 67% of compared French towns on households headed by a manager or professional: 13%
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
In the typical compared French town, 32% of households are headed by a retired person; in Septmonts, 30%. As a reference point, 9.4% of 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).
Septmonts sits below 91% of compared French towns for immigrants (2.1%)
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 median compared commune in Aisne has 5.7%; immigrants here make up a share lower than in 91% of compared French towns. For immigrants, the comparison in the typical compared French town is 6.5%. Foreign nationals: 1% of the total.
INSEE publishes no country of birth or ethnicity by commune in these tables, and the census doesn’t ask about religion.
A larger share of married residents than 67% of compared French towns: 45%
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
Here, a quarter of residents 15 and over are single. In the typical compared French town, married residents come to 43%.
Adults with no qualification make up 16% in Septmonts, less than in 69% 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
28% of adults out of school hold a higher-education qualification, against 30% in the typical compared French town. Set beside that, nearly a fifth of adults out of school have no qualification in the typical compared French town.
Among 41 French towns of 576 to 2,582 people, the 20th 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.
Ages run from 37.2 in Villejust to 62.3 in Prayssac.
Median age: 2 of the 6 towns around Septmonts are older
The nearest towns of 2,500 or more, colored by median age. Source: INSEE, census 2023.
| Town | Median age | 65+ | Second homes | Immigrants |
|---|---|---|---|---|
| Septmonts | 45 | 21% | 5.8% | 2.1% |
| Belleu 3,659 · 2.3 mi | 51.5 | 31% | 1.4% | 11% |
| Villeneuve-Saint-Germain 2,616 · 3 mi | 42.3 | 21% | 1.3% | 12% |
| Soissons 28,046 · 3.6 mi | 42.5 | 23% | 1.2% | 15% |
| Crouy 3,049 · 4.6 mi | 44.9 | 24% | 1.3% | 5.7% |
| Fère-en-Tardenois 2,836 · 11.6 mi | 47.8 | 28% | 1.9% | 3.3% |
| Villers-Cotterêts 10,489 · 13.5 mi | 41.5 | 19% | 1.3% | 12% |
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 Septmonts
What is the population of Septmonts?
576 at INSEE’s 2023 census, about the same as in 2012 (579).
How old are Septmonts’ residents?
The median age is 45, older than 57% of compared French towns. 23% are under 18 and 21% 65 or older.
How many second homes are there in Septmonts?
16, with occasional dwellings: 5.8% of all homes, against 2.1% for the median compared French town.
How many immigrants live in Septmonts?
INSEE counts 12 immigrants (born abroad, not French at birth), 2.1% of residents, and 6 foreign nationals (1%). The medians of compared French towns are 6.5% and 4.3%.
What is the median income in Septmonts?
€25,860 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 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.