The world’s population has reached 806.19 crores, which is around 8.2 billion according to Worldometer data, and it is growing continuously. This rapid increase is especially visible in cities around the world, where more people are moving in almost every day to live, work, and build their futures. Two big reasons behind this trend are globalisation and urbanisation. These forces are making cities more crowded than ever, giving rise to megacities, which are huge urban areas with millions of people.
As of now, Tokyo is one of the most populous cities in the world, according to World Population Review. The current population of the city, according to 2025 data, is more than 37 crores
Here, is a list of the 10 most populous cities in 2025. It’s an overview of how urban growth is changing the world and introducing new ways of life.
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11 Largest Cities by Population
As expected, the three largest cities by population belong to three of the most populous countries in the world. Japan, India, and China. Here they are:
| Rank | City Name | Country | Population (2025) | Population (2024) | % Change |
| 1 | Tokyo | Japan | 37,036,200 | 37,115,000 | -0.21% |
| 2 | Delhi | India | 34,665,600 | 33,807,400 | 2.54% |
| 3 | Shanghai | China | 30,482,100 | 29,867,900 | 2.06% |
| 4 | Dhaka | Bangladesh | 24,652,900 | 23,935,700 | 3% |
| 5 | Cairo | Egypt | 23,074,200 | 22,623,900 | 1.99% |
| 6 | Sao Paulo | Brazil | 22,990,000 | 22,806,700 | 0.80% |
| 7 | Mexico City | Mexico | 22,752,400 | 22,505,300 | 1.10% |
| 8 | Beijing | China | 22,596,500 | 22,189,100 | 1.84% |
| 9 | Mumbai | India | 22,089,000 | 21,673,100 | 1.92% |
| 10 | Osaka | Japan | 18,921,600 | 18,967,500 | -0.24% |
| 11 | Chongqing | China | 18,171,200 | 17,773,900 | 2.23% |
Source: World Population Review
With a population of 1,419,316,933, as per the U.S. Census Bureau, India has the highest population in the world, surpassing China which has a population of 1,407,181,209. Although Japan is not in the top 10 list of most populated countries, however, its capital city Tokyo has the highest population.
In conclusion, the strain on infrastructure, resources, and services in these megacities is becoming more pronounced, posing challenges for city planners and policymakers. As the trend towards urban living continues, finding sustainable solutions to accommodate this growth will be crucial for the future of these cities.
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