Saint-Marc-sur-Seine

Identity

Saint-Marc-sur-Seine (INSEE 21557) is in Côte-d'Or (21), part of CC du Pays Châtillonnais. Population 113 (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/21557-saint-marc-sur-seine

Vitality score

Vitality score 23.1/100 — Few services (model fr-v0.2).

Confidence: high.

Better served than 87 % of the 11,635 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]

1 × Restaurant (AUTOUR DU FEU). ^[3,4]

1 × Café / bar (LE SOLEIL D'OR). ^[4]

1 × Post office / agence postale (ST MARC SUR SEINE AP). ^[3]

1 × Library (AGENCE POSTALE - BIBLIOTHÈQUE). ^[3]

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

Market and village life

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

Trajectory

Population 117 (2012) → 113 (2023): -3.4 % over 10 years. ^[5,1]

Population 194 (1990) → 113 (2023): -41.8 % over 30 years. ^[6,1]

Dwellings (2023): 87, of which 19.5 % second homes and 16.1 % vacant. ^[7]

Access and surroundings

Bakery (Coulmier-le-Sec): 10.1 km to the north-west (straight line). ^[8]

Food shop (Origny): 2.5 km to the east (straight line). ^[9]

GP (Villaines-en-Duesmois): 6.5 km to the west (straight line). ^[10]

Pharmacy (Baigneux-les-Juifs): 11.7 km to the south (straight line). ^[11]

Primary school (Aignay-le-Duc): 10.2 km to the east (straight line). ^[12]

Climate

An average of 19 days a year at or above 30 °C and 58 days at or below 0 °C, over 13 complete years in 1995–2024. ^[13]

Measured at the BAIGNEUX LES JUIFS weather station, 11.5 km away at 415 m; the village itself is at 273 m. ^[13]

The village sits 142 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. ^[13]

Muggy days — a dew point at or above 18 °C — average 1 day a summer. ^[13]

Humidity measured at BAIGNEUX LES JUIFS, 11.5 km away at 415 m, over 12 summers. ^[13]

That station sits 142 m above the village, so each day's humidity was shifted by 3.06 °C per km before the muggy days were counted. ^[13]

An average of 958 mm of rain a year, spread over 138 days — about 6.9 mm on a day it rains. ^[13]

Rainfall measured at VILLAINES EN D, 6.4 km away at 344 m. Rainfall is not adjusted for altitude: unlike temperature it has no simple gradient to correct by. ^[13]

Uncertainties

No specific uncertainties flagged.

References

1. INSEE census (RP) 2023 — 21557/2023
2. INSEE density grid 2026
3. INSEE BPE 2025
4. INSEE SIRENE 2026-09
5. INSEE census (RP) 2023 — 21557/2012
6. INSEE census (RP) 2023 — 21557/1990
7. INSEE census (RP) 2023 — 21557/logement/2023
8. INSEE BPE 2025 — 21201
9. INSEE BPE 2025 — 21470
10. INSEE BPE 2025 — 21685
11. INSEE BPE 2025 — 21043
12. INSEE BPE 2025 — 21004
13. Météo-France daily climatology 1995-2024