In Flagy, 1.8% of homes are flats, fewer than in 99% of compared French towns
In Flagy, 27% of households are one person living alone, beside 35% in the typical compared French town. Nearly a quarter of households are headed by a manual worker, more than in 94% of compared French towns. The town had 584 residents in 250 households at the 2023 census. The census found that 5.3% of households have no car locally.
Throughout this page, the Seine-et-Marne 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 Flagy
Fewer residents than in 2012
Flagy had 645 residents at the 2012 census and 584 in 2023, down 9%: slower growth than in 96% of compared French towns. Population ↓
A town of families
35% of households are couples with children and 10% single parents with children; 18% of residents are under 15. Households ↓
Written from INSEE’s census 2023 on this page, against compared French towns.
−9% since 2012, a pace below 96% 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
Against +5% for the median compared French town and +8% for the median Seine-et-Marne town, the change came in two steps: +1% from 2012 to 2017, then −10% to 2023.
A lower share of residents aged 65 and over than 69% of compared French towns, at 19%
Shares of residents by age at the 2023 census.
Age groups · share of residents
Median age of the 3,798 compared French towns
■ Flagy 46.4. The median compared French town: 44.
With a median age of 46.4, Flagy is older than nearly two thirds of compared French towns. Measured more widely, 22% of residents are 65 or over in the typical compared French town. Across Flagy, 9.9% of residents are 15 to 24.
Women and men · all residents
53% women, 47% men
About 88 men for every 100 women. Median share of women: Seine-et-Marne 51.4%, France 51.8%.
More couples with children than 92% of compared French towns: 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 Seine-et-Marne median and the France median
Living alone · share
Average household size: 2.3 people. In the typical compared French town, the share of couples with children is 25%. At 10%, the share of single-parent households is in line with the figure in the typical compared French town.
Flagy ranks above 86% of compared French towns on second homes: 8.3%
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
In the typical compared French town, the share of empty homes is 6.7%; Flagy has 5.6%. Measured more widely, 2.1% of homes are second homes in the typical compared French town. Households that moved in under two years ago: 5.2%. Those in their home 30 years or more: 27%.
The median resident lives on €29,080 a year per consumption unit
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 Flagy’s residents live in households with a standard of living below €29,080 a year per consumption unit, and half above: higher than in 79% of compared French towns.
2.1% of households are headed by a manager or professional, fewer than in 99% 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 retired person: 33% of the total. The benchmark for households headed by a manager or professional in the typical compared French town: 9.4%.
Each household is counted once, by the occupation of its reference person (usually the oldest working adult).
Immigrants make up 4.3% in Flagy, less than in 71% 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.
2.4% of residents are foreign nationals (typical compared French town: 4.3%). Typically, 6.5% of residents are immigrants in the typical compared French town.
INSEE publishes no country of birth or ethnicity by commune in these tables, and the census doesn’t ask about religion.
Only 23% of residents 15 and over are single in Flagy
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 45% of residents 15 and over are married, where the figure in the typical compared French town is 43%. In the typical compared French town, single residents come to 25%.
Flagy ranks below 76% of compared French towns on adults with no qualification: 15%
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
32% of adults out of school hold a higher-education qualification (typical compared French town: 30%). In the typical compared French town, adults with no qualification come to 19%.
The 18th oldest of 41 French towns of 584 to 2,582 people
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).
Every neighbor is younger than Flagy
The nearest towns of 2,500 or more, colored by median age. Source: INSEE, census 2023.
| Town | Median age | 65+ | Second homes | Immigrants |
|---|---|---|---|---|
| Flagy | 46.4 | 19% | 8.3% | 4.3% |
| Varennes-sur-Seine 3,748 · 4.4 mi | 40.9 | 19% | 1.1% | 17% |
| Cannes-Écluse 2,742 · 4.6 mi | 43.5 | 24% | 2% | 7.8% |
| La Grande-Paroisse 2,893 · 5.3 mi | 43.6 | 22% | 4.2% | 11% |
| Montereau-Fault-Yonne 22,279 · 5.7 mi | 34.5 | 16% | 0.7% | 28% |
| Vernou-la-Celle-sur-Seine 2,630 · 6.5 mi | 41.9 | 18% | 4.7% | 7% |
| Moret-Loing-et-Orvanne 12,810 · 6.7 mi | 45.6 | 21% | 4% | 9.1% |
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 Flagy
What is the population of Flagy?
584 at INSEE’s 2023 census, 9% fewer than in 2012 (645).
How old are Flagy’s residents?
The median age is 46.4, older than 66% of compared French towns. 22% are under 18 and 19% 65 or older.
How many second homes are there in Flagy?
24, with occasional dwellings: 8.3% of all homes, against 2.1% for the median compared French town.
How many immigrants live in Flagy?
INSEE counts 25 immigrants (born abroad, not French at birth), 4.3% of residents, and 14 foreign nationals (2.4%). The medians of compared French towns are 6.5% and 4.3%.
What is the median income in Flagy?
€29,080 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.