Saint-Cast-le-Guildo

Saint-Cast-le-Guildo
Sant-Kast-ar-Gwildoù
Partial view of Saint-Cast-le-Guildo
Location of Saint-Cast-le-Guildo
Saint-Cast-le-Guildo
Saint-Cast-le-Guildo
Coordinates: 48°37′48″N 2°15′24″W / 48.63°N 2.2567°W / 48.63; -2.2567
CountryFrance
RegionBrittany
DepartmentCôtes-d'Armor
ArrondissementDinan
CantonPléneuf-Val-André
IntercommunalityDinan Agglomération
Government
 • Mayor (2020–2026) Marie-Madeleine Michel
Area
1
22.63 km2 (8.74 sq mi)
Population
 (2023)
3,371
 • Density149.0/km2 (385.8/sq mi)
Time zoneUTC+01:00 (CET)
 • Summer (DST)UTC+02:00 (CEST)
INSEE/Postal code
22282 /22380
Elevation0–76 m (0–249 ft)
Websitetourist office
1 French Land Register data, which excludes lakes, ponds, glaciers > 1 km2 (0.386 sq mi or 247 acres) and river estuaries.

Saint-Cast-le-Guildo (French pronunciation: [sɛ̃ ka ɡildo] ; Breton: Sant-Kast-ar-Gwildoù; Gallo: Saent-Cast-le-Giledo) is a commune in the Côtes-d'Armor department of Brittany in northwestern France. It is port city on the English Channel as it also has a nautical center, the Centre Nautique de Saint-Cast (CNSC) ranked 3rd to 6th in the nation.

The river Arguenon flows through the commune, where it empties into the sea.