Spain Population 2024 Estimated Population. In 1950, the population of barcelona was 1,809,390. In 2023 there were 100,000 fewer births and 43,000 more deaths in spain than in 2013.
Madrid’s 2024 population is now estimated at 6,783,240. If current demographic trends were maintained, spain would gain more than five million inhabitants in the next 15 years and almost six million by 2074.