Erla is a municipality in the province of Zaragoza, within the autonomous community of Aragon, Spain. It is located in the northern part of the country, in the Ebro basin region of northeastern Spain.
According to the 2004 census conducted by the Instituto Nacional de Estadística (INE), the municipality had a population of 438 inhabitants. This small population figure reflects the rural and sparsely settled character common to many municipalities in the Zaragoza province.
As a municipality, Erla holds the administrative status of a local governing unit within the Spanish system, encompassing the town itself and its surrounding territory. Its position in Aragon places it within one of Spain's historic autonomous communities, a region with its own distinct cultural and administrative identity.