About Castro-Urdiales
Castro-Urdiales is a city in Cantabria, Spain with a population of 31,977. It is the 232nd largest of the 544 cities of 15,000 or more listed in Spain, and the 17,059th largest worldwide. It lies 332 km from Madrid.
Key Facts
Country
Region
Rank in region
#3of 5
Coordinates
43.383, -3.220
Record updated
28 July 2025
Entry edited, not measured
City population, GeoNames. GeoNames publishes no year for its population figures, so “record updated” is when the entry was last edited — not the date the population was measured. Elevation is modelled from a digital elevation model rather than surveyed, so it is approximate.
Nearby Cities
All 544 in SpainClosest listed cities by great-circle distance from the city centre.