The County of Durango was formed by twelve elizates and four towns or cities that occupy the same territory that today does Durangaldea, a region of the province of Biscay and successor of this county.
In 1630 Elorrio annexed the elizate of San Augstin-Etxebarria, and in present time the elizates of Axpe, Arrazola and Apatamonasterio are joined together forming the municipality of Atxondo.