Blaisy-Bas

Identity

Blaisy-Bas (INSEE 21080) is in Côte-d'Or (21), part of CC Ouche et Montagne. Population 677 (2023). ^[1]

INSEE density class: Bourgs ruraux (level 5). ^[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/21080-blaisy-bas

Vitality score

Vitality score 22.4/100 — Few services (model fr-v0.2).

Confidence: high.

Better served than 23 % of the 16,558 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 PUBLIQUE). ^[3]

1 × Post office / agence postale (BLAISY BAS AP). ^[3]

1 × Hotel (L'OREE DES CHARMES // L'EVYDENCE). ^[3,4]

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

Not found in the commune: Bakery (boulangerie), Butcher (boucherie), Grocery (épicerie / supérette), Supermarket, Restaurant, Café / bar, Nursery school (maternelle), 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 712 (2012) → 677 (2023): -4.9 % over 10 years. ^[5,1]

Population 575 (1990) → 677 (2023): 17.7 % over 30 years. ^[6,1]

Dwellings (2023): 359, of which 6.7 % second homes and 8.1 % vacant. ^[7]

Access and surroundings

Bakery (Sombernon): 7.3 km to the south (straight line). ^[8]

Food shop (Sombernon): 6.8 km to the south-west (straight line). ^[8]

GP (Sombernon): 6.7 km to the south (straight line). ^[8]

Pharmacy (Sombernon): 6.9 km to the south (straight line). ^[8]

Primary school (Blaisy-Bas): 0.2 km to the east (straight line). ^[9]

Climate

An average of 12 days a year at or above 30 °C and 54 days at or below 0 °C, over 30 complete years in 1995–2024. ^[10]

Measured at the ST-MARTIN-DU-M weather station, 4.7 km away at 578 m; the village itself is at 414 m. ^[10]

The village sits 164 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. ^[10]

Muggy days — a dew point at or above 18 °C — average 1 day a summer. ^[10]

Humidity measured at ST-MARTIN-DU-M, 4.7 km away at 578 m, over 30 summers. ^[10]

That station sits 164 m above the village, so each day's humidity was shifted by 3.06 °C per km before the muggy days were counted. ^[10]

An average of 991 mm of rain a year, spread over 138 days — about 7.2 mm on a day it rains. ^[10]

Rainfall measured at TURCEY, 4.3 km away at 365 m. Rainfall is not adjusted for altitude: unlike temperature it has no simple gradient to correct by. ^[10]

What property sold for

43 houses sold between 2021 and 2025, at a median of 160,000 € — 1,624 € per m² of built surface. ^[11]

The median across Côte-d'Or is 1,892 € per m², so this commune sits below it. ^[11]

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 — 21080/2023
2. INSEE density grid 2026
3. INSEE BPE 2025
4. INSEE SIRENE 2026-09
5. INSEE census (RP) 2023 — 21080/2012
6. INSEE census (RP) 2023 — 21080/1990
7. INSEE census (RP) 2023 — 21080/logement/2023
8. INSEE BPE 2025 — 21611
9. INSEE BPE 2025 — 21080
10. Météo-France daily climatology 1995-2024
11. DVF (DGFiP property transactions) 2021-2025