Trenal

Identity

Trenal (INSEE 39537) is in Jura (39), part of CA ECLA (Espace Communautaire Lons Agglomération). Population 472 (2023). ^[1]

INSEE density class: Rural à habitat dispersé (level 6). ^[2]

Commune nouvelle formed on 2017-01-01 from 1 former commune: Mallerey (39309). ^[3]

Data vintages: INSEE BPE 2025 · INSEE SIRENE 2026-09 · INSEE census (RP) 2023 · INSEE COG 2026 · INSEE density grid 2026.

Permanent link: https://vivantrural.com/en/fr/39537-trenal

Vitality score

Vitality score 21.3/100 — Few services (model fr-v0.2).

Confidence: high.

Better served than 33 % of the 17,917 communes of a similar size.

Compare this with communes of a similar size. The score measures how well a place is served relative to its own size band, and larger communes score higher as a rule — so it reads meaningfully against another village, and misleadingly against a town.

Measured but not scored in this model: Market. See the methodology for why.

Services

A school, but no food shop and nowhere to eat or drink. ^[4,5]

1 × Primary school (élémentaire) (ECOLE PRIMAIRE PUBLIQUE). ^[4]

Not found in the commune: Bakery (boulangerie), Butcher (boucherie), Grocery (épicerie / supérette), Supermarket, Restaurant, Café / bar, Nursery school (maternelle), GP (médecin généraliste), Pharmacy, Post office / agence postale, Library. ^[4,5]

Market and village life

Market day: unknown — nothing found in the datasets or on the commune website.

Trajectory

Population 434 (2012) → 472 (2023): 8.8 % over 10 years. ^[6,1]

Population 390 (1990) → 472 (2023): 21 % over 30 years. ^[7,1]

Dwellings (2023): 243, of which 3.3 % second homes and 10.3 % vacant. ^[8]

Access and surroundings

Bakery (Gevingey): 3.2 km to the east (straight line). ^[9]

Food shop (Courlaoux): 2.6 km to the north (straight line). ^[10]

GP (Messia-sur-Sorne): 4 km to the north-east (straight line). ^[11]

Pharmacy (Messia-sur-Sorne): 4.8 km to the north-east (straight line). ^[11]

Primary school (Trenal): 0 km to the south-east (straight line). ^[12]

Climate

An average of 21 days a year at or above 30 °C and 43 days at or below 0 °C, over 30 complete years in 1995–2024. ^[13]

Measured at the LONS LE SAUNIER weather station, 6.6 km away at 298 m; the village itself is at 209 m. ^[13]

The village sits 89 m below the station, so each day's reading was shifted by 5.55 °C per km of altitude before the days were counted. Expect the result to be within about 0.68 °C. ^[13]

Muggy days — a dew point at or above 18 °C — average 3 days a summer. ^[13]

Humidity measured at LONS LE SAUNIER, 6.6 km away at 298 m, over 30 summers. ^[13]

That station sits 89 m above the village, so each day's humidity was shifted by 3.06 °C per km before the muggy days were counted. ^[13]

An average of 1,141 mm of rain a year, spread over 132 days — about 8.6 mm on a day it rains. ^[13]

Rainfall measured at LONS LE SAUNIER, 6.6 km away at 298 m. Rainfall is not adjusted for altitude: unlike temperature it has no simple gradient to correct by. ^[13]

Uncertainties

No specific uncertainties flagged.

References

1. INSEE census (RP) 2023 — 39537/2023
2. INSEE density grid 2026
3. INSEE COG 2026
4. INSEE BPE 2025
5. INSEE SIRENE 2026-09
6. INSEE census (RP) 2023 — 39537/2012
7. INSEE census (RP) 2023 — 39537/1990
8. INSEE census (RP) 2023 — 39537/logement/2023
9. INSEE BPE 2025 — 39251
10. INSEE BPE 2025 — 39171
11. INSEE BPE 2025 — 39327
12. INSEE BPE 2025 — 39537
13. Météo-France daily climatology 1995-2024