Fontenu

Identity

Fontenu (INSEE 39230) is in Jura (39), part of CC Terre d'Émeraude Communauté. Population 72 (2023). ^[1]

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

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/39230-fontenu

Vitality score

Vitality score 23.6/100 — Few services (model fr-v0.2).

Confidence: high.

Better served than 95 % of the 7,639 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

Somewhere to eat or drink, but no food shop and no school. ^[3,4]

2 × Restaurant (LE MAQUIS · FAIM DE LOUP). ^[4,3]

1 × Swimming pool (LAC DE CHALAIN). ^[4]

Not found in the commune: Bakery (boulangerie), Butcher (boucherie), Grocery (épicerie / supérette), Supermarket, Café / bar, Nursery school (maternelle), Primary school (élémentaire), GP (médecin généraliste), Pharmacy, Post office / agence postale, Library. ^[3,4]

Market and village life

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

Trajectory

Population 70 (2012) → 72 (2023): 2.9 % over 10 years. ^[5,1]

Population 35 (1990) → 72 (2023): 105.7 % over 30 years. ^[6,1]

Dwellings (2023): 50, of which 36 % second homes and 2 % vacant. ^[7]

Access and surroundings

Bakery (Pont-du-Navoy): 7.3 km to the north-west (straight line). ^[8]

Food shop (Marigny): 3.2 km to the west (straight line). ^[9]

GP (Doucier): 3.7 km to the west (straight line). ^[10]

Pharmacy (Doucier): 3.7 km to the west (straight line). ^[10]

Primary school (Doucier): 3.7 km to the west (straight line). ^[10]

Climate

An average of 17 days a year at or above 30 °C and 78 days at or below 0 °C, over 26 complete years in 1995–2024. ^[11]

Measured at the COGNA weather station, 10.6 km away at 577 m; the village itself is at 591 m. ^[11]

Muggy days — a dew point at or above 18 °C — average 0 days a summer. ^[11]

Humidity measured at CHAMPAGNOLE, 11 km away at 537 m, over 26 summers. ^[11]

That station sits 54 m below the village, so each day's humidity was shifted by 3.06 °C per km before the muggy days were counted. ^[11]

An average of 1,786 mm of rain a year, spread over 150 days — about 11.9 mm on a day it rains. ^[11]

Rainfall measured at LE FRASNOIS, 6.7 km away at 773 m. Rainfall is not adjusted for altitude: unlike temperature it has no simple gradient to correct by. ^[11]

What property sold for

5 houses sold between 2021 and 2025, at a median of 283,500 € — 1,250 € per m² of built surface. ^[12]

The median across Jura is 1,428 € per m², so this commune sits below it. ^[12]

These are recorded sale prices, not valuations or asking prices, and a median over five years spans five different markets. Built surface excludes land, which carries much of a rural property's value.

Uncertainties

No specific uncertainties flagged.

References

1. INSEE census (RP) 2023 — 39230/2023
2. INSEE density grid 2026
3. INSEE SIRENE 2026-09
4. INSEE BPE 2025
5. INSEE census (RP) 2023 — 39230/2012
6. INSEE census (RP) 2023 — 39230/1990
7. INSEE census (RP) 2023 — 39230/logement/2023
8. INSEE BPE 2025 — 39437
9. INSEE BPE 2025 — 39313
10. INSEE BPE 2025 — 39201
11. Météo-France daily climatology 1995-2024
12. DVF (DGFiP property transactions) 2021-2025