This publication is part of the series Cuadernos de Población aimed at publicising the main results from the Research Program carried out by the BBVA Foundation and Ivie on population in Spanish regions, its characteristics and evolution from a long-term perspective.

The documents in the population series offer data and summaries of the analysis found in the monographs La localización de la población española sobre el territorio: un siglo de cambios. Un estudio basado en series homogéneas (1900-2001), published in 2006, and Actividad y territorio. Un siglo de cambios, published in 2007.

Each note offers data on native and immigrant population of each region. Its clear exposition allows the information to be accessible to a non-specialist public and to be used as teaching material.