Chay

Identity

Chay (INSEE 25143) is in Doubs (25), part of CC Loue-Lison. Population 194 (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/25143-chay

Vitality score

Vitality score 25.4/100 — Few services (model fr-v0.2).

Confidence: high.

Better served than 80 % of the 15,809 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 × Primary school (élémentaire) (ECOLE PRIMAIRE). ^[3]

1 × Library (BIBLIOTHÈQUE). ^[3]

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, Nursery school (maternelle), GP (médecin généraliste), Pharmacy, Post office / agence postale. ^[3,4]

Market and village life

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

Trajectory

Population 200 (2012) → 194 (2023): -3 % over 10 years. ^[5,1]

Population 126 (1990) → 194 (2023): 54 % over 30 years. ^[6,1]

Dwellings (2023): 110, of which 12.7 % second homes and 7.3 % vacant. ^[7]

Access and surroundings

Bakery (Samson): 2.5 km to the north-east (straight line). ^[8]

Food shop (Liesle): 4.4 km to the north-west (straight line). ^[9]

GP (Arc-et-Senans): 5.8 km to the west (straight line). ^[10]

Pharmacy (Arc-et-Senans): 5.7 km to the west (straight line). ^[10]

Primary school (Chay): 0.9 km to the south-east (straight line). ^[11]

Climate

An average of 33 days a year at or above 30 °C and 77 days at or below 0 °C, over 30 complete years in 1995–2024. ^[12]

Measured at the ARC-ET-SENANS weather station, 5.9 km away at 235 m; the village itself is at 255 m. ^[12]

Muggy days — a dew point at or above 18 °C — average 2 days a summer. ^[12]

Humidity measured at COULANS, 12.3 km away at 468 m, over 18 summers. ^[12]

That station sits 213 m above the village, so each day's humidity was shifted by 3.06 °C per km before the muggy days were counted. ^[12]

An average of 1,205 mm of rain a year, spread over 138 days — about 8.7 mm on a day it rains. ^[12]

Rainfall measured at ARC-ET-SENANS, 5.9 km away at 235 m. Rainfall is not adjusted for altitude: unlike temperature it has no simple gradient to correct by. ^[12]

What property sold for

8 houses sold between 2021 and 2025, at a median of 157,950 € — 1,326 € per m² of built surface. ^[13]

The median across Doubs is 1,815 € per m², so this commune sits below it. ^[13]

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 — 25143/2023
2. INSEE density grid 2026
3. INSEE BPE 2025
4. INSEE SIRENE 2026-09
5. INSEE census (RP) 2023 — 25143/2012
6. INSEE census (RP) 2023 — 25143/1990
7. INSEE census (RP) 2023 — 25143/logement/2023
8. INSEE BPE 2025 — 25528
9. INSEE BPE 2025 — 25336
10. INSEE BPE 2025 — 25021
11. INSEE BPE 2025 — 25143
12. Météo-France daily climatology 1995-2024
13. DVF (DGFiP property transactions) 2021-2025