The Historical Series section includes population figures from 1900 taken from censuses. The series consists of national data by Autonomous Community, as well as provincial and municipal data and is broken down into three parts, as the population groups considered in each period are not homogenous.
Other available information offers data compiled and transcribed from census publications. On the one hand, this includes breakdowns by sex and age, with provincial details for censuses since 1900. On the other hand, there is a catalogue of all municipalities where censuses have been taken in Spain since 1842 up until the 2001 census, specifying the inhabitants registered in each census and the alterations made in terms of: name, territory and the creation and removal of entries if necessary.