A higher share of couples with children than 92% of compared French towns, at 35%
Set against 12% in the typical compared French town, 3.6% of households rent social housing (HLM) in Forges. The town counted 443 residents and 160 households at the 2023 Census. Locally, nearly a fifth of households are headed by a manual worker. The median age in the town is 39.8, lower than in four fifths of compared French towns.
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 Forges
A town of families
35% of households are couples with children and 6.2% single parents with children; 20% of residents are under 15. Households ↓
Written from INSEE’s census 2023 on this page, against compared French towns.
A +6% change since 2012: Forges grew faster than 55% 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
Between 2012 and 2017 the population moved ±0%, then +6% to 2023. Over those years, the median Seine-et-Marne town changed +8% and the median compared French town +5%.
Fewer residents aged 65 and over than 85% of compared French towns: 16%
Shares of residents by age at the 2023 census.
Age groups · share of residents
Median age of the 3,798 compared French towns
■ Forges 39.8. The median compared French town: 44.
The share of residents aged 15 to 24 is 13%, against 11% in the typical compared French town. To put it in context, 22% of residents are 65 or over in the typical compared French town.
Women and men · all residents
50% women, 50% men
About an even split. Median share of women: Seine-et-Marne 51.4%, France 51.8%.
In Forges, 25% of households are one person living alone, fewer than in 95% of compared French towns
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
6.2% of households are single parents (typical compared French town: 10%). As a yardstick, just over a third of households are one person living alone in the typical compared French town. The average household has 2.6 people.
7.2% of households have no car, below 72% 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
One household in 14 has no car (median compared French town: 11%). Lower than in 71% of compared French towns: 18% of homes are flats. Long tenure is the mark of 22% of households (30 years or more), short tenure of 6.7% (under two years).
The middle resident’s standard of living: €27,370 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.
Per consumption unit, half of residents live on more than €27,370 a year: higher than in 65% of compared French towns.
34% of households are headed by a retired person, more than in 59% 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
Across Forges, 9.6% of households are headed by a manager or professional. For comparison, 32% 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).
More foreign nationals than 89% of compared French towns: 13%
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 Seine-et-Marne has 14%; immigrants here make up a share higher than in just over four fifths of compared French towns. As a yardstick, 4.3% of residents are foreign nationals in the typical compared French town. Set against 6.5% in the typical compared French town, 13% of residents are immigrants in Forges.
INSEE publishes no country of birth or ethnicity by commune in these tables, and the census doesn’t ask about religion.
Forges ranks above 83% of compared French towns on single residents: 31%
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
Locally, just over two in five residents 15 and over are married. In the typical compared French town, the share of single residents is 25%.
More adults with no qualification than 86% of compared French towns: 27%
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
Compared with 30% in the typical compared French town, 26% of adults out of school hold a higher-education qualification here. On average, 19% of adults out of school have no qualification in the typical compared French town.
Ranked by age, 2nd youngest of 41 French towns this size
The 40 compared French towns nearest in population, by median age. Hover for each one’s second homes and immigrants; click for its page.
Villejust is the youngest (37.2); Prayssac the oldest (62.3).
5 of 6 neighbors are older than Forges
The nearest towns of 2,500 or more, colored by median age. Source: INSEE, census 2023.
| Town | Median age | 65+ | Second homes | Immigrants |
|---|---|---|---|---|
| Forges | 39.8 | 16% | 2.5% | 13% |
| Montereau-Fault-Yonne 22,279 · 1.7 mi | 34.5 | 16% | 0.7% | 28% |
| Saint-Germain-Laval 2,888 · 2.1 mi | 40.9 | 19% | 1.2% | 11% |
| Varennes-sur-Seine 3,748 · 2.8 mi | 40.9 | 19% | 1.1% | 17% |
| La Grande-Paroisse 2,893 · 2.8 mi | 43.6 | 22% | 4.2% | 11% |
| Cannes-Écluse 2,742 · 3.9 mi | 43.5 | 24% | 2% | 7.8% |
| Vernou-la-Celle-sur-Seine 2,630 · 4.6 mi | 41.9 | 18% | 4.7% | 7% |
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 Forges
What is the population of Forges?
443 at INSEE’s 2023 census, 6% more than in 2012 (418).
How old are Forges’ residents?
The median age is 39.8, younger than 80% of compared French towns. 24% are under 18 and 16% 65 or older.
How many second homes are there in Forges?
4, with occasional dwellings: 2.5% of all homes, against 2.1% for the median compared French town.
How many immigrants live in Forges?
INSEE counts 59 immigrants (born abroad, not French at birth), 13% of residents, and 56 foreign nationals (13%). The medians of compared French towns are 6.5% and 4.3%.
What is the median income in Forges?
€27,370 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.