Households in social housing: 0.3%, a lower share than 99% of compared French towns
Here 8.1% of homes are flats, where the figure in the typical compared French town is 30%. At 24%, the share of one-person households is lower than in 96% of compared French towns. Grisy-les-Plâtres had 709 residents in 290 households at the 2023 census. In Grisy-les-Plâtres, nearly a fifth of households are headed by a manager or professional.
Throughout this page, the Val-d'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 Grisy-les-Plâtres
A town of families
35% of households are couples with children and 3.4% single parents with children; 18% of residents are under 15. Households ↓
Growing fast
Grisy-les-Plâtres had 606 residents at the 2012 census and 709 in 2023, up 17%: faster growth than in 86% of compared French towns. Population ↓
Empty homes
The census found 41 homes empty (12%): for sale, to let, awaiting work or simply unused. Homes & cars ↓
Written from INSEE’s census 2023 on this page, against compared French towns.
Growth of +17% since 2012 puts Grisy-les-Plâtres ahead of 86% 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
Over the whole period the median compared French town changed +5%, and the median Val-d'Oise town +8%. The years 2012 to 2017 brought +15%; 2017 to 2023, +2%.
Residents aged 65 and over make up 15% in Grisy-les-Plâtres, less than in 90% 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
■ Grisy-les-Plâtres 44.2. The median compared French town: 44.
Half of Grisy-les-Plâtres’s residents are over 44.2, older than in 51% of compared French towns. The usual figure: 22% of residents are 65 or over in the typical compared French town. On the census count, just over one in ten residents are 15 to 24.
Women and men · all residents
49% women, 51% men
About 106 men for every 100 women. Median share of women: Val-d'Oise 51.5%, France 51.8%.
Grisy-les-Plâtres sits above 92% of compared French towns for couples with children (35%)
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 Val-d'Oise median and the France median
Living alone · share
Against a figure of 10% in the typical compared French town, the share of single-parent households in Grisy-les-Plâtres comes in at 3.4%. The comparison figure for couples with children is 25% in the typical compared French town. Average household size: 2.4 people.
Fewer households without a car than 94% of compared French towns: 4.1%
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
Just over one in ten homes stand empty (typical compared French town: 6.7%). In the typical compared French town, households without a car come to 11%. Locally, 2.6% of homes are second homes.
Per consumption unit, the median standard of living is €34,930 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 Grisy-les-Plâtres’ residents live in households with a standard of living below €34,930 a year per consumption unit, and half above: higher than in 96% of compared French towns.
Grisy-les-Plâtres sits below 81% of compared French towns for households headed by a retired person (26%)
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
Here one in ten households are headed by a manual worker, where the figure in the typical compared French town is 14%. Elsewhere, nearly a third of households are headed by a retired person 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 71% of compared French towns, at 4.2%
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 Val-d'Oise has 16%; immigrants here make up a share lower than in 71% of compared French towns. Foreign nationals: 3.4% of the total. 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.
22% of residents 15 and over are single, below 79% 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
Married residents make up 45%, against 43% in the typical compared French town. Across the comparison, 25% of residents 15 and over are single in the typical compared French town.
Graduates of higher education make up 41% in Grisy-les-Plâtres, more than in 81% 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
By its share of adults with no qualification (13%), Grisy-les-Plâtres is below 82% of compared French towns. As a yardstick, 30% of adults out of school hold a higher-education qualification in the typical compared French town.
16th lowest median age among 41 French towns of 709 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.
The youngest is Villejust (37.2), the oldest Prayssac (62.3).
Older than Grisy-les-Plâtres: 1 of the 6 towns nearby
The nearest towns of 2,500 or more, colored by median age. Source: INSEE, census 2023.
| Town | Median age | 65+ | Second homes | Immigrants |
|---|---|---|---|---|
| Grisy-les-Plâtres | 44.2 | 15% | 2.6% | 4.2% |
| Marines 3,594 · 3.3 mi | 39.7 | 17% | 1.9% | 6.4% |
| Osny 17,954 · 4.8 mi | 38.6 | 17% | 0.9% | 18% |
| Pontoise 31,970 · 5.8 mi | 34.2 | 13% | 2.2% | 23% |
| Cergy 70,906 · 6.1 mi | 30.4 | 9.1% | 4.4% | 30% |
| Auvers-sur-Oise 6,863 · 6.5 mi | 44.3 | 20% | 3.4% | 9.4% |
| Courdimanche 7,311 · 6.5 mi | 36 | 9.6% | 0.7% | 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 Grisy-les-Plâtres
What is the population of Grisy-les-Plâtres?
709 at INSEE’s 2023 census, 17% more than in 2012 (606).
How old are Grisy-les-Plâtres’ residents?
The median age is 44.2, older than 51% of compared French towns. 21% are under 18 and 15% 65 or older.
How many second homes are there in Grisy-les-Plâtres?
9, with occasional dwellings: 2.6% of all homes, against 2.1% for the median compared French town.
How many immigrants live in Grisy-les-Plâtres?
INSEE counts 30 immigrants (born abroad, not French at birth), 4.2% of residents, and 24 foreign nationals (3.4%). The medians of compared French towns are 6.5% and 4.3%.
What is the median income in Grisy-les-Plâtres?
€34,930 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.