ATLAS · MEGA-CITIES · ARGENTINA
Buenos Aires
Buenos Aires is the one mega-city of Argentina — the only urban area in the country to pass five million people. The largest, Buenos Aires, holds an estimated 12,795,000people across its urban agglomeration — a giant of over ten million. From Natural Earth, snapshot 2026-06-24.
MEGA-CITYBuenos Aires
POPULATION~12,795,000
NUMBER OF MEGA-CITIES1
The mega-city
Buenos Aires~12,795,000 people
In context
Where Buenos Airessits on the world’s scale of mega-cities — from the cities just over five million to the singular supergiant above twenty.
20M+
15–20M
10–15MBuenos Aires is here
7–10M
5–7M
Mega-cities of other countries
Japan · United States · Mexico · India · Brazil · China · Bangladesh · Pakistan