Portes-en-Valdaine

Identity

Portes-en-Valdaine (INSEE 26251) is in Drôme (26), part of CA Montélimar Agglomération. Population 459 (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/26251-portes-en-valdaine

Vitality score

Vitality score 23.5/100 — Few services (model fr-v0.2).

Confidence: high.

Better served than 41 % of the 17,936 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. ^[3,4]

1 × Nursery school (maternelle) (ECOLE MATERNELLE). ^[3]

1 × Hairdresser (AUX PORTES DES DOUCEURS). ^[3,4]

Not counted, because the business register records them as closed: 1 × Restaurant.

Not found in the commune: Bakery (boulangerie), Butcher (boucherie), Grocery (épicerie / supérette), Supermarket, Restaurant, Café / bar, 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 378 (2012) → 459 (2023): 21.4 % over 10 years. ^[5,1]

Population 274 (1990) → 459 (2023): 67.5 % over 30 years. ^[6,1]

Dwellings (2023): 281, of which 13.2 % second homes and 7.5 % vacant. ^[7]

Access and surroundings

Bakery (La Bégude-de-Mazenc): 2.6 km to the north-east (straight line). ^[8]

Food shop (La Touche): 1.5 km to the west (straight line). ^[9]

GP (La Bégude-de-Mazenc): 1.9 km to the north-east (straight line). ^[8]

Pharmacy (La Bégude-de-Mazenc): 2.6 km to the north-east (straight line). ^[8]

Primary school (Portes-en-Valdaine): 0 km to the south (straight line). ^[10]

Climate

An average of 41 days a year at or above 30 °C and 47 days at or below 0 °C, over 26 complete years in 1995–2024. ^[11]

Measured at the MONTBOUCHER-S-J weather station, 7.1 km away at 136 m; the village itself is at 226 m. ^[11]

The village sits 90 m above the station, so each day's reading was shifted by 6.06 °C per km of altitude before the days were counted. Expect the result to be within about 0.68 °C. ^[11]

Muggy days — a dew point at or above 18 °C — average 2 days a summer. ^[11]

Humidity measured at MONTBOUCHER-S-J, 7.1 km away at 136 m, over 26 summers. ^[11]

That station sits 90 m below the village, so each day's humidity was shifted by 3.69 °C per km before the muggy days were counted. ^[11]

An average of 899 mm of rain a year, spread over 77 days — about 11.7 mm on a day it rains. ^[11]

Rainfall measured at MONTBOUCHER-S-J, 7.1 km away at 136 m. Rainfall is not adjusted for altitude: unlike temperature it has no simple gradient to correct by. ^[11]

What property sold for

35 houses sold between 2021 and 2025, at a median of 259,530 € — 2,340 € per m² of built surface. ^[12]

The median across Drôme is 2,174 € per m², so this commune sits about level with 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 — 26251/2023
2. INSEE density grid 2026
3. INSEE BPE 2025
4. INSEE SIRENE 2026-09
5. INSEE census (RP) 2023 — 26251/2012
6. INSEE census (RP) 2023 — 26251/1990
7. INSEE census (RP) 2023 — 26251/logement/2023
8. INSEE BPE 2025 — 26045
9. INSEE BPE 2025 — 26352
10. INSEE BPE 2025 — 26251
11. Météo-France daily climatology 1995-2024
12. DVF (DGFiP property transactions) 2021-2025