What is the population of Madrid, Spain?

According to WorldAtlas.com, the population of the city of Madrid slightly exceeds 3.2 million people as of 2013. Most sources, including Madrid.org, measure the population of the entire metropolitan area at around 6.5 million people. Madrid is the capital of Spain and the largest city in the country.

The population of Spain itself exceeds 47 million, so nearly 14 percent of the people living in this nation reside in and around Madrid. The capital city, a modern metropolitan area, is centrally located within the country. The only other city in Spain with a population of more than 1 million people is Barcelona.