This document discusses the population of Spain. It covers several topics:
1. Sources for demographic study such as censuses and population registries that provide data on population size, distribution, growth, and structure.
2. The distribution of Spain's population, which is uneven across areas with high densities in Madrid and coastal regions and low densities in interior regions.
3. Population growth, which has slowed in recent years due to lower birth rates and the 2008 financial crisis, contributing to population aging as life expectancy remains high.