Each edition grades its towns against each other only.
A town of 2,095 in Isère, Auvergne-Rhône-Alpes.
Trept has subject grades but no overall grade: French towns get one from 2,500 residents. Its weakest subject is cost of living (C): at the median price, a 70 m² home costs 7 times the median annual income per consumption unit in the intercommunality. Its strongest is jobs & income (A−): 0.4 jobs per working resident; 5.3% unemployment.
Hazard risk isn’t graded in France yet: national flood maps cover only some areas.
Each subject compares Trept 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 →
Trept has 1 historic monument on the Culture ministry’s list, none at the highest level (classé).
The oldest protected part dates from the 14th century; the first monument here was protected in 1992.
20% of its homes were built before 1919, against 7.4% in the median compared French town.
Data highlights are ordered by what stands out in Trept.
The 15-to-24 age group makes up 9.9% of residents. 16% of residents are 65 or over, lower than both Isère’s towns (21%) and compared French towns (22%). Ages in Trept split evenly at 41.2: half are older, half younger.
50% women, 50% men
About an even split. Median share of women: Isère 51.3%, France 51.8%.
| Trept | Isère median | France median | |
|---|---|---|---|
| Under 15 | 20% | 18% | 17% |
| 15–24 | 9.9% | 11% | 11% |
| 25–44 | 25% | 23% | 23% |
| 45–64 | 28% | 26% | 26% |
| 65+ | 16% | 21% | 22% |
| No diploma | 14% | 19% | 19% |
| CAP or BEP | 28% | 24% | 26% |
| Baccalauréat | 20% | 18% | 18% |
| Higher education | 33% | 33% | 30% |
INSEE, census 2023 · Isère median and France median: the median of compared communes
Rents are the ministry’s estimates of advertised rents, not rents actually paid.
Estimated advertised rent for houses: €12.88/m² a month. The market in Trept: 58 sales of houses and apartments between July 2023 and June 2026. Houses accounted for 91% of sales, apartments for the rest.
| By type | Median per m² | Sales |
|---|---|---|
| Houses | €2,795/m² | 53 |
Source: DGFiP, DVF property sales (Etalab geolocated); Housing Ministry, Carte des loyers 2025; INSEE, Filosofi 2023 · Licence Ouverte
Care access and life expectancy are shown for context, not graded.
Average lifespans in Isère: 86.8 years for women, 81.6 for men (2025), against 85.9 and 80.3 nationally. From 2016 to 2025, 130 residents of Trept died, against 138 expected from France’s death rates at each age: 6% fewer. The nearest emergency department to Trept is Ch Pierre Oudot Bourgoin Jallieu, 7.6 mi away.
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 · That adjustment for care homes is a model of TownRatings’ own, not official data. A less sure grade: it could be anywhere from D to B+.
Half of residents lived on more than €28,990 a year per consumption unit, above Isère’s towns (€27,110) and compared French towns (€25,970) alike. At the census, 4.7% of commuters walked, cycled or took the bus or train.
Source: INSEE, census 2023 (commuting, employment, jobs at place of work); INSEE, Filosofi 2023 · Licence Ouverte
France has no History Grade yet: this card describes, it doesn’t grade.
Protection here reaches back to the 14th century. Trept 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
Heritage and family days out in and near Trept. Best known first.
Trept has one historic monument; beside it, the nearest classé monuments in other towns, within 15.5 mi.
Château de la Poype de Serrières: Photo: Frachet · CC BY-SA 3.0
Wikidata has nobody with a French article born in Trept yet.
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 |
|---|---|---|---|---|---|---|
| Trept | 2,095 | — | — | C | — | C |
| Saint-Chef | 3,921 | 4 | A+ | B− | A− | A |
| Crémieu | 3,536 | 4.3 | B− | C | C− | C+ |
| Saint-Savin | 4,323 | 4.4 | A− | C− | A | B+ |
| Saint-Romain-de-Jalionas | 3,417 | 6.7 | B− | C | B+ | B+ |
| Morestel | 4,340 | 6.9 | C− | C+ | C− | D |
| Bourgoin-Jallieu | 30,151 | 7 | C− | C− | C− | C |
People: INSEE, census 2023. Miles: center to center.
Trept has no Safety Grade: over a quarter of its index would rest on the département’s average. Recorded figures: an average of 3.2 recorded violent incidents and 13.4 recorded burglaries, vehicle thefts, thefts from vehicles and acts of criminal damage per 1,000 residents a year, 2023–2025.
Estimated advertised apartment rents are €13.00/m² a month, charges included. Incomes are higher than in most compared French towns, so Trept grades C for cost of living.
Commune in Isère, Auvergne-Rhône-Alpes
Trept is a commune of 2,095 people in the Communauté de communes Les Balcons du Dauphiné. 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
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 October 30, 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.