Coulmier-le-Sec

Identity

Coulmier-le-Sec (INSEE 21201) is in Côte-d'Or (21), part of CC du Pays Châtillonnais. Population 240 (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/21201-coulmier-le-sec

Vitality score

Vitality score 38.5/100 — Few services (model fr-v0.2).

Confidence: high.

Better served than 94 % of the 17,060 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 food shop and somewhere to eat or drink, but no school. ^[3,4]

1 × Bakery (boulangerie) (CABOULOT 21). ^[3,4]

1 × Grocery (épicerie / supérette). ^[3,4]

1 × Restaurant (LES TEMPLIERS). ^[3,4]

1 × Café / bar (BAR RESTAURANT LES TEMPLIERS). ^[4]

1 × Post office / agence postale (COULMIER LE SEC AP). ^[3]

Not found in the commune: Butcher (boucherie), Supermarket, Nursery school (maternelle), Primary school (élémentaire), GP (médecin généraliste), Pharmacy, Library. ^[3,4]

Market and village life

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

Trajectory

Population 271 (2012) → 240 (2023): -11.4 % over 10 years. ^[5,1]

Population 286 (1990) → 240 (2023): -16.1 % over 30 years. ^[6,1]

Dwellings (2023): 142, of which 4.2 % second homes and 15.5 % vacant. ^[7]

Access and surroundings

Bakery (Coulmier-le-Sec): 0 km to the south (straight line). ^[8]

Food shop (Coulmier-le-Sec): 0.1 km to the north-east (straight line). ^[8]

GP (Villaines-en-Duesmois): 8.2 km to the south (straight line). ^[9]

Pharmacy (Châtillon-sur-Seine): 13.6 km to the north-east (straight line). ^[10]

Primary school (Chamesson): 5.7 km to the north-east (straight line). ^[11]

Climate

An average of 18 days a year at or above 30 °C and 76 days at or below 0 °C, over 30 complete years in 1995–2024. ^[12]

Measured at the CHATILLON/SEINE weather station, 12.9 km away at 262 m; the village itself is at 330 m. ^[12]

The village sits 68 m above 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. ^[12]

Muggy days — a dew point at or above 18 °C — average 0 days a summer. ^[12]

Humidity measured at CHATILLON/SEINE, 12.9 km away at 262 m, over 30 summers. ^[12]

That station sits 68 m below 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 883 mm of rain a year, spread over 133 days — about 6.6 mm on a day it rains. ^[12]

Rainfall measured at AMPILLY LE SEC, 7 km away at 277 m. Rainfall is not adjusted for altitude: unlike temperature it has no simple gradient to correct by. ^[12]

What property sold for

16 houses sold between 2021 and 2025, at a median of 76,000 € — 624 € per m² of built surface. ^[13]

The median across Côte-d'Or is 1,892 € 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 — 21201/2023
2. INSEE density grid 2026
3. INSEE BPE 2025
4. INSEE SIRENE 2026-09
5. INSEE census (RP) 2023 — 21201/2012
6. INSEE census (RP) 2023 — 21201/1990
7. INSEE census (RP) 2023 — 21201/logement/2023
8. INSEE BPE 2025 — 21201
9. INSEE BPE 2025 — 21685
10. INSEE BPE 2025 — 21154
11. INSEE BPE 2025 — 21134
12. Météo-France daily climatology 1995-2024
13. DVF (DGFiP property transactions) 2021-2025