Each edition grades its towns against each other only.
Population 42,313: a town in Seine-Saint-Denis, Île-de-France.
Gagny grades low on several counts. Its weakest subject is cost of living — at the median price, a 70 m² home costs 8.5 times the median annual income per consumption unit in the intercommunality. Jobs & income is weaker too (D): 0.3 jobs per working resident; 11.7% unemployment. Fewer journeys need a car: 99% of residents live within 800 m of a bakery, and 51% of working residents walk, cycle or take public transport to work. The overall grade lands at D, #23 of 39 in Seine-Saint-Denis. Nationally, it does better than 5% of compared French towns.
Figures: amenities, INSEE BPE 2025 · commuting and employment, INSEE census 2023 · prices, DVF · income per consumption unit (an income adjusted for household size), INSEE Filosofi.
Hazard risk isn’t graded in France yet: national flood maps cover only some areas. The overall grade uses the other six subjects.
Each subject compares Gagny with other French towns of 2,500 or more, ordered by how far its rank is from the middle. American and UK towns are graded separately.
How TownRatings grades French towns →
The 3 things Gagny does most differently from other towns.
The Culture ministry lists no building in Gagny as a monument historique. That’s true of 25% of compared French towns too.
The nearest classé monument is Église Saint-Louis, in Villemomble, 1.3 mi away.
3.4% of its homes were built before 1919, against 7.4% in the median compared French town.
Explore the history →Nothing in Gagny is on the monuments historiques list. These are the nearest classé monuments, within 15.5 mi.
Data highlights are ordered by what stands out in Gagny.
Unemployment stood at 11.7%, below Seine-Saint-Denis’ towns (14.6%) but above compared French towns (10.1%). The typical income here, after tax and benefits, is €25,630 a year per consumption unit. Also worth knowing: 2.2% of Gagny’s working residents had no journey to work at the census.
Source: INSEE, census 2023 (commuting, employment, jobs at place of work); INSEE, Filosofi 2023 · Licence Ouverte
Rents are the ministry’s estimates of advertised rents, not rents actually paid.
In Gagny, houses go for €3,714/m² and apartments for €3,056/m². Advertised rents are estimated at €18.56/m² a month, near Seine-Saint-Denis’ towns (€19.44/m²) and higher than compared French towns (€12.41/m²). Of the homes sold, 54% were houses.
| By type | Median per m² | Sales |
|---|---|---|
| Houses | €3,714/m² | 560 |
| Apartments | €3,056/m² | 473 |
Source: DGFiP, DVF property sales (Etalab geolocated); Housing Ministry, Carte des loyers 2025; INSEE, Filosofi 2023 · Licence Ouverte
Children under 15 make up 21%, close to Seine-Saint-Denis’ towns (22%) and above compared French towns (17%). 13% of residents are aged 15 to 24. The median resident of Gagny is 36 years old.
52% women, 48% men
About 94 men for every 100 women. Median share of women: Seine-Saint-Denis 51.1%, France 51.8%.
| Gagny | Seine-Saint-Denis median | France median | |
|---|---|---|---|
| Under 15 | 21% | 22% | 17% |
| 15–24 | 13% | 13% | 11% |
| 25–44 | 28% | 29% | 23% |
| 45–64 | 25% | 23% | 26% |
| 65+ | 13% | 13% | 22% |
| No diploma | 22% | 26% | 19% |
| CAP or BEP | 20% | 17% | 26% |
| Baccalauréat | 19% | 19% | 18% |
| Higher education | 34% | 32% | 30% |
INSEE, census 2023 · Seine-Saint-Denis median and France median: the median of compared communes
Primary schools aren’t graded: France doesn’t publish their results by school.
Vocational results within 5 km: 85% passed the bac pro, of 1,289 candidates at 13 lycées. At the lycées within 5 km of Gagny, 91.4% passed the bac, higher than Seine-Saint-Denis’ towns (89.0%) yet lower than compared French towns (92.9%). By results, schools here place #29 of 39 in Seine-Saint-Denis.
| School | Level | Candidates | Passed, 2025 |
|---|---|---|---|
| Collège Pablo NerudaNearest collègeCollège | Collège | 155 | 83%−1 pt |
| Lycée Gustave EiffelNearest lycéeGeneral lycée | General lycée | 314 | 89%−1 pt |
| Collège Louise MichelBest against expectations: 16 points above the expected rateCollège | Collège | 114 | 80%+16 pts |
Ministry of Education (DEPP) · brevet and bac 2025, value added (IVAC, IVAL) · Licence Ouverte
Police and gendarmerie recorded 1,125 offenses in Gagny in 2025. Violence against people ran at 9.4 per 1,000 residents a year and the graded property crimes at 17.7 (2023–2025 average). More of the graded crimes locally were criminal damage than anything else (2025).
Not in the gradeTheft without violence, drug use and fraud are shown for information but left out of the Safety Grade, which counts violence plus burglaries, vehicle thefts, thefts from vehicles and criminal damage per resident.
Source: SSMSI (Interior Ministry), recorded crime by commune, 2023–2025 · Licence Ouverte · For armed robbery, this figure isn’t published when it’s small (five or fewer in at least one of the last three years); the index uses the département’s average instead, 0.3% of the index here. The count covers the offense categories the Safety Grade uses.
Care access and life expectancy are shown for context, not graded.
There are 17 general practitioners in Gagny. Its care home for older people (116 places) counts its residents as Gagny’s; allowing for it, deaths were 8% below expected. From 2016 to 2025, 2,603 residents of Gagny died, against 2,681 expected from France’s death rates at each age: 3% fewer. In Seine-Saint-Denis, life expectancy at birth reaches 85.7 years for women and 81 for men (2025), next to 85.9 and 80.3 for France.
Source: INSEE, deaths by commune of residence 2016–2025 and censuses; Eurostat, death rates by age (© European Union); INSEE, BPE 2025; DREES, APL 2024; INSEE, life expectancy by département 2025 · Licence Ouverte · The care-home step is TownRatings’ own calculation, not an official number.
Museums, heritage and other places to visit in and near Gagny. Best known first.
MuseumMusée des transports urbains, interurbains et ruraux4.3 km east, in Chelles
MuseumRosny-Rail4.5 km west, in Rosny-sous-BoisAbbeyAbbeyAbbaye Royale de Chelles3.4 km east, in ChellesAttractionAttractionEspaces d'Abraxas4.7 km south, in Noisy-le-GrandGardenGardenParc arboretum de Montfermeil2.4 km northeast, in MontfermeilPhotos from Wikimedia Commons, each under its own licence (our copy, resized).
5 notable people were born in Gagny.
Marcel Gaudion: Unknown author Unknown author, Public domain · Michel Teulet: Jacques Paquier, CC BY 2.0
Commune in Seine-Saint-Denis, Île-de-France
Gagny is a commune of 42,313 people in the Métropole du Grand Paris. TownRatings compares communes, France’s local unit: each has its own mayor and its own statistics. Its area takes in the town and the countryside around it.
Built from INSEE’s 2026 official geography (COG) and IGN Admin Express boundaries
The nearest towns of 2,500 or more. The map uses IGN’s commune boundaries. See them on the map →
| Town | People | Miles | Overall | Cost | Safety | Health |
|---|---|---|---|---|---|---|
| Gagny | 42,313 | — | D | D | C | C+ |
| Neuilly-sur-Marne | 39,800 | 1.4 | D | D | C | C+ |
| Montfermeil | 28,703 | 1.4 | D− | D | C | C |
| Le Raincy | 14,735 | 1.6 | C | D− | D | B+ |
| Clichy-sous-Bois | 29,354 | 1.6 | D | C | C | C− |
| Villemomble | 29,795 | 1.7 | D | D− | D | B− |
| Gournay-sur-Marne | 7,320 | 2.1 | C | D− | C | B |
People: INSEE, census 2023. Miles: center to center.
It grades C for safety, #9 of 39 in Seine-Saint-Denis. In 2025 police and gendarmerie recorded 167 burglaries and 287 acts of criminal damage.
They grade C, better than 26% of compared French towns and #29 of 39 in Seine-Saint-Denis. 89% of 314 candidates passed the bac at Lycée Gustave Eiffel in 2025, a point below the expected rate given its pupils’ backgrounds. Primary schools aren’t graded: France doesn’t publish their results by school.
Incomes are lower than in most compared French towns, so Gagny grades D for cost of living.
Sources: INSEE, census 2023 (population, employment, commuting) · INSEE, Filosofi 2023 (income per consumption unit, poverty) · DGFiP, DVF property sales, July 2023 to June 2026 · Housing Ministry, Carte des loyers 2025 · SSMSI, recorded crime by commune, 2023–2025 · Ministry of Education (DEPP), brevet and bac results and value-added indicators, 2025 · INSEE, deaths by commune of residence 2016–2025 and censuses 2012–2023; Eurostat, death rates by age (© European Union); INSEE, BPE 2025 (care homes, emergency and maternity units, GPs, pharmacies); DREES, APL 2024; INSEE, life expectancy by département 2025 (provisional) · INSEE, BPE 2025 and Filosofi 200 m grid (walking distances) · IGN Admin Express (boundaries) · TownRatings grades: our own summary of the data, ranking French towns against each other only, updated November 8, 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.