Above 99% of compared French towns: 41% of households are couples with children
In the typical compared French town, 6.7% of homes stand empty; in Saint-Vaast-de-Longmont, 1.9%. Few places have as many households headed by a manual worker: 18% here, more than in 73% of compared French towns. The 2023 Census put the town’s population at 654, in 250 households. Locally, 2% of households have no car.
Throughout this page, the Oise 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 Saint-Vaast-de-Longmont
A town of families
41% of households are couples with children and 3.9% single parents with children; 19% of residents are under 15. Households ↓
Written from INSEE’s census 2023 on this page, against compared French towns.
Slower growth than 53% of compared French towns: Saint-Vaast-de-Longmont changed by +4% since 2012
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 Oise town +2%. The first five years brought +3%; the six to 2023, +1%.
Half of Saint-Vaast-de-Longmont is over 45, older than 57% 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
■ Saint-Vaast-de-Longmont 45. The median compared French town: 44.
The share of residents aged 65 and over is 21%, against 22% in the typical compared French town. Residents aged 15 to 24 come to 10% in Saint-Vaast-de-Longmont, about one in ten.
Women and men · all residents
50% women, 50% men
About an even split. Median share of women: Oise 51.7%, France 51.8%.
A smaller share of one-person households than 99% of compared French towns: 18%
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 Oise median and the France median
Living alone · share
3.9% of households are single parents, against 10% in the typical compared French town. Elsewhere, just over a third of households are one person living alone in the typical compared French town. Households average 2.6 people.
100% of homes are houses
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
Flats are rarer here than in 99% of compared French towns. Turnover: 6.3% of households moved in less than two years ago, and 26% have lived in their home 30 years or more. On second homes, 1.5% here is much the same as in the typical compared French town.
Per consumption unit, the median standard of living is €32,160 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.
At €32,160 a year per consumption unit, the median standard of living here is higher than in 92% of compared French towns.
Saint-Vaast-de-Longmont sits above 78% of compared French towns for households headed by a manager or professional (16%)
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 retired person trails two thirds of compared French towns: 29%. In the typical compared French town, households headed by a manager or professional come to 9.4%.
Each household is counted once, by the occupation of its reference person (usually the oldest working adult).
4.4% of residents are immigrants, fewer than in 69% of compared French towns
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.
Set against 4.3% in the typical compared French town, 2.9% of residents are foreign nationals in Saint-Vaast-de-Longmont. Immigrants make up 6.5% in the typical compared French town. The median compared commune in Oise has 7.4%; immigrants here make up a share lower than in 69% 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.
Married residents: 52%, a higher share than 96% 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
With single residents at 20%, Saint-Vaast-de-Longmont is behind 94% of compared French towns on that count. The usual figure: 43% of residents 15 and over are married in the typical compared French town.
A larger share of graduates of higher education than 57% of compared French towns: 32%
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 make up about one in five here (19%). Graduates of higher education make up 30% in the typical compared French town.
41 French towns of 654 to 2,582 people: this is 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.
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 Saint-Vaast-de-Longmont
The nearest towns of 2,500 or more, colored by median age. Source: INSEE, census 2023.
| Town | Median age | 65+ | Second homes | Immigrants |
|---|---|---|---|---|
| Saint-Vaast-de-Longmont | 45 | 21% | 1.5% | 4.4% |
| Verberie 3,898 · 0.5 mi | 40.1 | 18% | 1.4% | 5.2% |
| Béthisy-Saint-Pierre 3,111 · 2.7 mi | 41 | 19% | 1.1% | 3.5% |
| Lacroix-Saint-Ouen 5,415 · 3.9 mi | 41.8 | 20% | 1.4% | 6.5% |
| Pontpoint 3,275 · 4.3 mi | 43.5 | 19% | 1.5% | 4.1% |
| Pont-Sainte-Maxence 12,361 · 6.2 mi | 38.8 | 17% | 1.1% | 12% |
| Compiègne 40,761 · 7.7 mi | 37.6 | 19% | 2.2% | 17% |
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 Saint-Vaast-de-Longmont
What is the population of Saint-Vaast-de-Longmont?
654 at INSEE’s 2023 census, 4% more than in 2012 (629).
How old are Saint-Vaast-de-Longmont’s 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 Saint-Vaast-de-Longmont?
4, with occasional dwellings: 1.5% of all homes, against 2.1% for the median compared French town.
How many immigrants live in Saint-Vaast-de-Longmont?
INSEE counts 29 immigrants (born abroad, not French at birth), 4.4% of residents, and 19 foreign nationals (2.9%). The medians of compared French towns are 6.5% and 4.3%.
What is the median income in Saint-Vaast-de-Longmont?
€32,160 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.