In some megacities, the population density stretches as far as the eye can see.
When millions gather in one place, unique patterns of culture, life, and movement emerge. It’s truly thought-provoking how urban development shapes our world.
#1 Tokyo, Japan

- Population: Approx. 37.2 million
- The world’s largest city by population. Famous for its technology, culture, and economic influence.
#2 Delhi, India

- Population: Approx. 32.3 million
- One of the fastest-growing cities and a major political and cultural hub in India.
#3 Shanghai, China

- Population: Approx. 29.9 million
- China’s economic powerhouse and one of the world’s busiest port cities.
#4 São Paulo, Brazil

- Population: Approx. 22.8 million
- South America’s largest city, known for its industry and cultural scene.
#5 Mexico City, Mexico

- Population: Approx. 22.3 million
- The capital and cultural heart of Mexico, rich in historical roots.
#6 Dhaka, Bangladesh

- Population: Approx. 22.1 million
- One of the most densely populated cities in the world and a key economic hub in South Asia.
#7 Cairo, Egypt

- Population: Approx. 21.8 million
- Africa’s largest city, famed for the pyramids and deep historical significance.
#8 Beijing, China

- Population: Approx. 21.7 million
- The capital of China and political center, with numerous historical landmarks.
#9 Mumbai, India

- Population: Approx. 21.6 million
- India’s financial capital and home to the Bollywood film industry.
#10 Osaka, Japan

- Population: Approx. 19.0 million
- An important industrial city in Japan, known for its food culture and commerce.
#11 Karachi, Pakistan

- Population: Approx. 17.8 million
- Pakistan’s largest city and a major economic hub.
#12 Chongqing, China

- Population: Approx. 17.5 million
- A booming metropolis in central China experiencing rapid growth.
#13 Istanbul, Turkey

- Population: Approx. 16.7 million
- The city that bridges Europe and Asia, rich in culture and history.
#14 Buenos Aires, Argentina

- Population: Approx. 15.6 million
- South America’s second-largest city and the birthplace of tango.
#15 Kolkata, India

- Population: Approx. 15.3 million
- Former colonial capital and a vibrant cultural center.
#16 Lagos, Nigeria

- Population: Approx. 15.2 million
- Africa’s fastest-growing megacity and a vital economic hub.
#17 Kinshasa, DR Congo

- Population: Approx. 15.0 million
- Africa’s second-largest city, with booming urban growth.
#18 Manila, Philippines

- Population: Approx. 14.9 million
- Densely populated and the political and economic center of the country.
#19 Rio de Janeiro, Brazil

- Population: Approx. 13.7 million
- Globally known for its carnival, beaches, and mountainous landscape.
#20 Guangzhou, China

- Population: Approx. 13.5 million
- One of China’s key commercial cities with major economic importance.