Imagen de un mapa Zamudio, in the heart of Biscay, in Txorierri Valley.

The limits of this municipality composed of farmhouses, city centre and companies are the following: Derio, Gamiz and Fika to the north; Lezama to the east; Galdakao, Etxebarri and Bilbo to the south, and Sondika and Loiu to the west. Aranoltza, Daño, Galbarriatu, Geldo, Lekunbiz, Sandoni, Santimami and Oxinaga are their neighbourhoods.

- Area: 20km.

Population per typology of linguistic mobility in 2001
Linguistic mobility Population
Basque speakers 1025
Speakers of a bilingual origin 99
New Basque speakers 302
New partial Basque speakers 357
Partially Hispanicised speakers 112
Totally Hispanicised speaker 22
Spanish speakers 1001