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Châteaulin

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Châteaulin

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Also known as Chateaulin, Ville-sur-Aône, Cité-sur-Aône, Montagne-sur-Aône

Châteaulin (; ) is a commune in the Finistère department and administrative region of Brittany in north-western France. It is a sub-prefecture of the department.

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Châteaulin is a commune in France, situated within the Finistère department and the arrondissement of Châteaulin. It serves as the capital of the canton of Châteaulin and the Communauté de Communes du Pays de Châteaulin et du Porzay. The town is located in the Brittany region, with an elevation of 206 meters above sea level. Its postal code is 29150, and it shares borders with the communes of Cast, Dinéault, Lothey, and Pleyben.

The population of Châteaulin is recorded as 5,774, comprising 2,529 males and 2,685 females. The area covers 20.81 square kilometers. Residents are referred to as Châteaulinois or Châteaulinoises. The town is twinned with Grimmen and Clonakilty. While one source lists the population as 5,379, the administrative data specifies 5,774. The official name of the commune is Châteaulin, also known by the names Cité-sur-Aône, Montagne-sur-Aône, and Ville-sur-Aône.

Synthesized by Vinony from 53 facts across 7 sources: Wikidata, Open Meteo, Openweathermap, OpenStreetMap, GeoNames, Vinony graph, Geo. Generated from structured data (not the Wikipedia text) and checked against those facts — may still contain errors.

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Place details

Locality
Châteaulin
Region
Bretagne
Country
France
Population
5,379
Timezone
Europe/Paris

via OpenStreetMap · GeoNames

Air quality

34US AQIGood
PM2.5
5.9 µg/m³
PM10
10.5 µg/m³
As of 2026-08-11 02:00 · Open-Meteo

Key facts

French commune.name
Châteaulin
French commune.commune status
Subprefecture and commune
French commune.image
Chateaulin 1.jpg
French commune.caption
Châteaulin and the Aulne
French commune.image coat of arms
Blason ville fr Châteaulin (Finistère).svg
French commune.INSEE
29026
French commune.postal code
29150
French commune.arrondissement
Châteaulin
French commune.canton
Crozon
French commune.mayor
Gaëlle Nicolas
French commune.term
2020–2026
French commune.intercommunality
Pleyben-Châteaulin-Porzay
French commune.elevation min m
2
French commune.elevation max m
206
French commune.area km2
20.81

via Wikipedia infobox

~2 min read

Encyclopedic overview

9 sections
Contents
  • Geography
  • Population
  • Breton language
  • Economy
  • Personalities
  • International relations
  • See also
  • References
  • External links

Châteaulin (; ) is a commune in the Finistère department and administrative region of Brittany in north-western France. It is a sub-prefecture of the department.

==Geography== Châteaulin is in a valley towards the center of Finistère on the River Aulne and the Canal de Nantes à Brest, mid-way between Quimper to the south and Brest to the north. To the west the Menez-Hom hills separate it from the Crozon peninsula and the Bay of Douarnenez, which opens into the Atlantic Ocean.

Excerpted from Wikipedia’s “Châteaulin” article, available under the CC BY-SA 4.0 licence.

Gallery (4)

On the map

2 mapped locations