Couples with children make up 37% in Grilly, more than in 96% of compared French towns
0.6% of households rent social housing (HLM) (typical compared French town: 12%). Households headed by a manual worker: 5.8% of the total. On households without a car, Grilly sits lower than 99% of compared French towns: 2.9%. The town had 889 residents in 360 households at the 2023 Census.
Throughout this page, the Ain 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 Grilly
One home in six is a second home
The census counted 86 second homes and occasional dwellings in Grilly, 18% of its 480 homes: higher than in 92% of compared French towns. 43% of them are houses. Their owners live elsewhere, so they aren’t in the population figures on this page. Homes & cars ↓
Immigrants
INSEE counts 200 immigrants in Grilly (people born abroad who weren’t French at birth, whatever their nationality now): 26% of residents, against 8.5% for the median compared commune in Ain. 21% are foreign nationals. Immigrants and foreign nationals ↓
A town of families
37% of households are couples with children and 10% single parents with children; 20% of residents are under 15. Households ↓
Many graduates
61% of residents 15 and over who have left education hold a diploma above the bac, 33% a master’s or more (bac+5). Qualifications ↓
Written from INSEE’s census 2023 on this page, against compared French towns.
Second homes: 18%, a higher share than 92% 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
By its share of empty homes (8.2%), Grilly is above 66% of compared French towns. Recent arrivals (under two years) make up 16% of households; long-stayers (30 years or more) 20%. Lower than in 53% of compared French towns: 28% of homes are flats. As a yardstick, 2.1% of homes are second homes in the typical compared French town.
A growing town: +14% since 2012, faster than 80% 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 Ain town +13%. The years 2012 to 2017 brought +7%; 2017 to 2023, +7%.
Only 8.5% of residents are 15 to 24 in Grilly
Shares of residents by age at the 2023 census.
Age groups · share of residents
Median age of the 3,798 compared French towns
■ Grilly 42.2. The median compared French town: 44.
By its share of residents aged 65 and over (18%), Grilly is below just over three quarters of compared French towns. On top of that, half of the town’s residents are under 42.2, younger than in 64% of compared French towns. For comparison, 11% of residents are 15 to 24 in the typical compared French town.
Women and men · all residents
51% women, 49% men
About an even split. Median share of women: Ain 51.0%, France 51.8%.
A lower share of one-person households than 97% of compared French towns, at 23%
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 Ain median and the France median
Living alone · share
Households here average 2.5 people each. One in ten households are single parents, a higher share than in 55% of compared French towns. In the typical compared French town, the share of one-person households is 35%.
Standard of living at the median: €60,900 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 Grilly’s residents live in households with a standard of living below €60,900 a year per consumption unit, and half above: higher than in 99% of compared French towns.
Households headed by a manager or professional: 35%, a higher share than 98% 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
In Grilly, 19% of households are headed by a retired person, beside 32% in the typical compared French town. Typically, 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).
More immigrants than 97% of compared French towns: 26%
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 Ain has 8.5%; immigrants here make up a share higher than in 97% of compared French towns. On average, 6.5% of residents are immigrants in the typical compared French town. Foreign nationals come to 21% in Grilly, about two in ten.
INSEE publishes no country of birth or ethnicity by commune in these tables, and the census doesn’t ask about religion.
59% of residents 15 and over are married, a share 99% of compared French towns don’t reach
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
Single residents: 21%, below 85% of compared French towns. For comparison, 43% of residents 15 and over are married in the typical compared French town.
61% of adults out of school hold a higher-education qualification, more than in 98% 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
Here 6.2% of adults out of school have no qualification, where the figure in the typical compared French town is 19%. The share of graduates of higher education in the typical compared French town is 30%.
10th lowest median age among 41 French towns of 889 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.
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 Grilly
The nearest towns of 2,500 or more, colored by median age. Source: INSEE, census 2023.
| Town | Median age | 65+ | Second homes | Immigrants |
|---|---|---|---|---|
| Grilly | 42.2 | 18% | 18% | 26% |
| Cessy 5,832 · 2 mi | 36.9 | 10% | 4.4% | 22% |
| Divonne-les-Bains 10,464 · 2.3 mi | 41 | 17% | 21% | 23% |
| Gex 13,627 · 2.4 mi | 35 | 10% | 6.2% | 23% |
| Ségny 2,941 · 2.9 mi | 34.8 | 11% | 4.7% | 30% |
| Ornex 5,082 · 3.7 mi | 37.9 | 12% | 4.8% | 38% |
| Ferney-Voltaire 12,094 · 5.1 mi | 36.7 | 12% | 17% | 46% |
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 Grilly
What is the population of Grilly?
889 at INSEE’s 2023 census, 14% more than in 2012 (779).
How old are Grilly’s residents?
The median age is 42.2, younger than 64% of compared French towns. 24% are under 18 and 18% 65 or older.
How many second homes are there in Grilly?
86, with occasional dwellings: 18% of all homes, against 2.1% for the median compared French town.
How many immigrants live in Grilly?
INSEE counts 230 immigrants (born abroad, not French at birth), 26% of residents, and 190 foreign nationals (21%). The medians of compared French towns are 6.5% and 4.3%.
What is the median income in Grilly?
€60,900 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 October 30, 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.