ATLAS · MEGA-CITIES · SPAIN
Madrid
Madrid is the one mega-city of Spain — the only urban area in the country to pass five million people. The largest, Madrid, holds an estimated 5,567,000people across its urban agglomeration — a mega-city. From Natural Earth, snapshot 2026-06-24.
MEGA-CITYMadrid
POPULATION~5,567,000
NUMBER OF MEGA-CITIES1
The mega-city
Madrid~5,567,000 people
In context
Where Madridsits on the world’s scale of mega-cities — from the cities just over five million to the singular supergiant above twenty.
20M+
15–20M
10–15M
7–10M
5–7MMadrid is here
Mega-cities of other countries
Japan · United States · Mexico · India · Brazil · China · Bangladesh · Argentina