The municipality of El Astillero lies in the province of Cantabria, in Cantabria: according to official INE figures for 1 January 2025 it is home to 18,448 people, over about 5.7 km².
With about 3,236 inhabitants per km², it is one of the most densely populated areas in the country, part of a large metropolitan area. Of the 22 municipalities in the province of Cantabria with at least 5,000 inhabitants, it is number 6 by population.
As the crow flies it lies about 7 km south of Santander, the provincial capital. The nearest major city is Bilbao, about 75 km away.
Nearby, within a few dozen kilometres, are other destinations featured in our guides: Santander (7 km).
Below you will find a map of neighbouring municipalities, the weather, places to stay in the area and a link to all the municipalities in the province of Cantabria.