Jakarta is now sitting at the top of the world’s biggest cities, and the scale of it almost feels unreal. The latest United Nations report confirms that the metropolitan region has become the most populous on the planet, home to nearly 42 million people. For the first time in years, this pushes Tokyo out of the global lead.
The UN highlights how Jakarta’s population has grown steadily for around twenty years. Rapid urban migration, expanding economic activity, and movement from surrounding areas in Jabodetabek have kept numbers climbing. That steady influx reshaped the capital in ways few cities ever experience.
DW reports that Dhaka follows next, holding second position with almost 37 million residents. Tokyo now sits in third place with 33.4 million people. Even with the drop, Tokyo remains a major Asian economic hub. Yet slowing population growth and an increasingly aging community have pushed it behind fast-rising cities.
Cairo is the only non-Asian city within the top ten today. Meanwhile, some of Latin America’s longtime giants, Mexico City and São Paulo, have slipped off that list. Back in 2000, both stood strong among the leaders, but the dramatic growth of Cairo and Shanghai has overtaken them.
The UN expects more megacities to emerge as rural numbers shrink. Cities with populations exceeding 10 million will continue to rise across much of the world. The only major exception is sub-Saharan Africa, where rural populations are still expanding.
But wearing the crown of the world’s most crowded city comes with heavy pressure. The UN points out the stark contrasts visible across Indonesia’s capital. Shiny skyscrapers dominate parts of the skyline, hinting at rapid progress and ongoing business expansion. Yet millions still live packed into dense neighborhoods facing daily environmental risks. Pollution, flooding, and limited access to proper housing remain constant challenges in those communities.
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Jakarta now stands at a turning point, shaped by growth, burdened by inequality, and watched closely by the world.
