Megacities That Dwarf Mexico City: A Global Population Ranking

Mexico City, with a metropolitan population exceeding 21 million, is undeniably massive. Yet it sits outside the global top five. Several Asian and American megacities surpass it in scale, reflecting the dramatic urbanization of the 21st century.

The Cities Larger Than Mexico City (Metro Area Estimates)

1. Tokyo, Japan (~37 million) – The world's undisputed largest urban agglomeration.
2. Shanghai, China (~29 million) – China's financial engine and largest city proper.
3. Seoul, South Korea (~26 million) – The Seoul Capital Area houses half the nation's population.
4. Mumbai, India (~25 million) – The dense, island-based financial capital of India.
5. New York City, USA (~20–23 million, depending on MSA vs. CSA definition) – The Tri-State Area rivals Mexico City closely.
6. Beijing, China (~22 million) – The political and cultural heart of China.
7. Chongqing, China (~20–32 million, administrative area) – A massive municipal region often cited as the world's largest "city proper" by administrative boundary.

Note: Rankings vary by definition (city proper, urban area, metropolitan area). The list above uses common metropolitan/urban agglomeration estimates.