Each edition grades its towns against each other only.
Home to 3,162 people, this town lies in Seine-et-Marne, Île-de-France.
Safety is where it shines: an average of 4 recorded violent incidents and 9.8 recorded burglaries, vehicle thefts, thefts from vehicles and acts of criminal damage per 1,000 residents a year, 2023–2025. Overall, Saint-Mammès earns a B, better than 58% of compared French towns. Its place in the ranking is #13 of 104 in Seine-et-Marne. It also does well on walkability (A): 56% of residents live within 800 m of a bakery, and 34% of working residents walk, cycle or take public transport to work. What counts against it is schools — bac results 9.8 points below the expected rate; brevet results 2.5 points below the expected rate. Homes sell for a median €2,500/m², so 70 m² costs 6 years of the median income per consumption unit in the Communauté de communes Moret Seine et Loing.
Figures: recorded crime, SSMSI (Ministry of the Interior) · amenities, INSEE BPE 2025 · commuting, INSEE census 2023 · brevet and bac results, Ministry of Education · 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 Saint-Mammès 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 Culture ministry lists 1 historic monument in Saint-Mammès, none of them classé, France’s highest protection.
The oldest protected part dates from the 10th century; the first monument here was protected in 1926.
14% of its homes were built before 1919, against 7.4% in the median compared French town.
Saint-Mammès has one historic monument; beside it, the nearest classé monuments in other towns, within 15.5 mi.
Église Saint-Mammès: Photo: GO69 · CC0
Data highlights are ordered by what stands out in Saint-Mammès.
Unemployment stood at 8.6%, below both Seine-et-Marne’s towns (9.6%) and compared French towns (10.1%). 350 jobs are based in Saint-Mammès, for 1,400 working residents (0.3 per worker). Median disposable income is €27,280 a year for each consumption unit.
Source: INSEE, census 2023 (commuting, employment, jobs at place of work); INSEE, Filosofi 2023 · Licence Ouverte
2025 saw 30 offenses recorded in Saint-Mammès. Of the graded crimes in the town, criminal damage came up most often (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 family violence, sexual violence, armed robbery, vehicle theft and theft from vehicles, the count isn’t published when it’s small (five or fewer in a year of the last three), so the index uses the département’s average, 19.3% of the index here. As that share tops 10%, this Safety Grade carries more doubt than most. The count covers the offense categories the Safety Grade uses.
Primary schools aren’t graded: France doesn’t publish their results by school.
The bac pro: 74% of 176 candidates passed at the vocational lycée within 5 km. At the collèges within 5 km of Saint-Mammès, 89.5% passed the brevet, above both Seine-et-Marne’s towns (84.0%) and compared French towns (87.5%). On school results, the town ranks #39 of 114 in Seine-et-Marne.
| School | Level | Candidates | Passed, 2025 |
|---|---|---|---|
| Collège Fernand GreghNearest collègeCollège | Collège | 153 | 87%−3 pts |
| Lycée La FayetteNearest lycéeGeneral lycée | General lycée | 82 | 90%−3 pts |
Ministry of Education (DEPP) · brevet and bac 2025, value added (IVAC, IVAL) · Licence Ouverte
Rents are the ministry’s estimates of advertised rents, not rents actually paid.
119 sales of houses and apartments in Saint-Mammès, from July 2023 to June 2026, give the median of €2,500/m². Houses made up 82% of the homes sold; apartments the rest.
| By type | Median per m² | Sales |
|---|---|---|
| Houses | €2,583/m² | 97 |
Source: DGFiP, DVF property sales (Etalab geolocated); Housing Ministry, Carte des loyers 2025; INSEE, Filosofi 2023 · Licence Ouverte
France has no History Grade yet: this card describes, it doesn’t grade.
Its heritage reaches back to the 10th century. The Culture ministry lists 1 historic monument in Saint-Mammès, none of them classé, France’s highest protection.
Ministère de la Culture, Mérimée (Licence Ouverte 2.0) · INSEE, census 2023, homes by build period
Aged 15 to 24: just over one in ten residents. A quarter of residents are 65 or over, above both Seine-et-Marne’s towns (15%) and compared French towns (22%). Typical age in Saint-Mammès: 48.7, the median.
53% women, 47% men
About 90 men for every 100 women. Median share of women: Seine-et-Marne 51.4%, France 51.8%.
| Saint-Mammès | Seine-et-Marne median | France median | |
|---|---|---|---|
| Under 15 | 15% | 20% | 17% |
| 15–24 | 11% | 13% | 11% |
| 25–44 | 20% | 26% | 23% |
| 45–64 | 30% | 25% | 26% |
| 65+ | 25% | 15% | 22% |
| No diploma | 21% | 17% | 19% |
| CAP or BEP | 23% | 21% | 26% |
| Baccalauréat | 18% | 20% | 18% |
| Higher education | 32% | 34% | 30% |
INSEE, census 2023 · Seine-et-Marne median and France median: the median of compared communes
Care access and life expectancy are shown for context, not graded.
408 deaths in Saint-Mammès between 2016 and 2025, where France’s rates at each age predict 394: 4% above. Its care home for older people (75 places) counts its residents as Saint-Mammès’; allowing for it, deaths were 14% below expected. For a family doctor, residents of Saint-Mammès can choose among 2 GPs. In Seine-et-Marne, life expectancy at birth reaches 85.4 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.
Heritage, other places to visit and museums in and near Saint-Mammès. Best known first.
MuseumMusée de l'atelier Rosa Bonheur2.5 km northwest, in Thomery
ChâteauChâteau de Moret1.9 km south, in Moret-Loing-et-Orvanne
ChâteauChâteau de Graville2.1 km northeast, in Vernou-la-Celle-sur-Seine
ChâteauChâteau de By2.5 km northwest, in ThomeryFortFortPorte de Paris1.5 km south, in Moret-Loing-et-OrvannePhotos from Wikimedia Commons, each under its own licence (our copy, resized).
Wikidata has nobody with a French article born in Saint-Mammès yet.
Commune in Seine-et-Marne, Île-de-France
Saint-Mammès is a commune of 3,162 people in the Communauté de communes Moret Seine et Loing. 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 |
|---|---|---|---|---|---|---|
| Saint-Mammès | 3,162 | — | B | C | A | B |
| Champagne-sur-Seine | 6,497 | 0.9 | D | C+ | B− | D |
| Moret-Loing-et-Orvanne | 12,810 | 1.2 | B | C− | B+ | B+ |
| Vernou-la-Celle-sur-Seine | 2,630 | 1.6 | — | C | — | D |
| Thomery | 3,384 | 1.8 | — | C− | — | A |
| La Grande-Paroisse | 2,893 | 3.9 | — | C− | — | C+ |
| Vulaines-sur-Seine | 2,730 | 4.1 | B | C | B+ | C+ |
People: INSEE, census 2023. Miles: center to center.
It grades A for safety, #5 of 104 in Seine-et-Marne. In 2025 police and gendarmerie recorded 6 burglaries and 18 acts of criminal damage.
They grade C−, better than 21% of compared French towns and #39 of 114 in Seine-et-Marne. 90% of 82 candidates passed the bac at Lycée La Fayette in 2025, 3 points below the expected rate given its pupils’ backgrounds. Primary schools aren’t graded: France doesn’t publish their results by school.
Prices are close to the median of compared French towns: the median sale price from July 2023 to June 2026 was €2,500/m², against €2,430/m² for the median of compared French towns. Incomes are higher than in most compared French towns, so Saint-Mammès grades C 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 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.