Each edition grades its towns against each other only.
The town has 546 residents and lies in Seine-et-Marne, Île-de-France.
With fewer than 1,000 residents, Blennes falls below the line for grades. 15% of homes here are second homes.
The one thing Blennes does most differently from other towns.
Blennes has 1 historic monument on the Culture ministry’s list, none at the highest level (classé).
33% of its homes were built before 1919, against 7.4% in the median compared French town.
Explore the history →Blennes has one historic monument; beside it, the nearest classé monuments in other towns, within 15.5 mi.
Data highlights are ordered by what stands out in Blennes.
France has no History Grade yet: this card describes, it doesn’t grade.
Blennes has 1 historic monument on the Culture ministry’s list, none at the highest level (classé).
Ministère de la Culture, Mérimée (Licence Ouverte 2.0) · INSEE, census 2023, homes by build period
16% are under 15, lower than Seine-et-Marne’s towns (20%) and near compared French towns (17%). The 65-and-over age group makes up 23% of residents. Residents of Blennes have a median age of 48.1.
51% women, 49% men
About 94 men for every 100 women. Median share of women: Seine-et-Marne 51.4%, France 51.8%.
| Blennes | Seine-et-Marne median | France median | |
|---|---|---|---|
| Under 15 | 16% | 20% | 17% |
| 15–24 | 8.1% | 13% | 11% |
| 25–44 | 22% | 26% | 23% |
| 45–64 | 31% | 25% | 26% |
| 65+ | 23% | 15% | 22% |
| No diploma | 14% | 17% | 19% |
| CAP or BEP | 30% | 21% | 26% |
| Baccalauréat | 20% | 20% | 18% |
| Higher education | 30% | 34% | 30% |
INSEE, census 2023 · Seine-et-Marne median and France median: the median of compared communes
Jobs located in Blennes: 50, for 250 residents in work (0.2 each). The median disposable income was €28,470 a year per consumption unit, near Seine-et-Marne’s towns (€28,310) and higher than compared French towns (€25,970). Public transport took a tenth of Blennes’ working residents 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.
From July 2023 to June 2026, 27 homes were sold in Blennes.
Source: Housing Ministry, Carte des loyers 2025; INSEE, Filosofi 2023 · Licence Ouverte
Heritage in and near Blennes. Best known first.
One notable person was born in Blennes.
Commune in Seine-et-Marne, Île-de-France
Blennes is a commune of 546 people in the Communauté de communes Pays de Montereau. 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 |
|---|---|---|---|---|---|---|
| Blennes | 546 | — | — | — | — | — |
| Villeneuve-la-Guyard Yonne | 3,455 | 6.6 | C− | C+ | B− | C |
| Cannes-Écluse | 2,742 | 8 | — | C− | — | C |
| Pont-sur-Yonne Yonne | 3,391 | 8.9 | C | B+ | D | C− |
| Varennes-sur-Seine | 3,748 | 9.2 | D | C− | C− | C+ |
| Montereau-Fault-Yonne | 22,279 | 10 | D | C− | C− | B− |
| Saint-Germain-Laval | 2,888 | 11 | — | C− | — | C+ |
People: INSEE, census 2023. Miles: center to center.
Sources: INSEE, census 2023 (population, employment, commuting) · INSEE, Filosofi 2023 (income per consumption unit, poverty) · 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 4, 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.