Top 10 Biggest Cities in the World by Population 2026 – Jakarta Tops Tokyo

Philips Edward

February 16, 2026

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As we gaze into the not-so-distant future, 2026 promises to be a landmark year for urban populations. Cities are not merely centers of commerce and culture; they embody the very spirit of humanity’s relentless quest for progress. With this transformation comes a myriad of questions: What drives this urban migration? How do these cities cope with the ever-increasing demands placed upon them? And perhaps the most tantalizing proposition—will Jakarta finally surpass Tokyo as the most populous city in the world? This article explores the ten biggest cities projected for 2026, showcasing a blend of burgeoning megacities and established urban giants.

Without further ado, let’s embark on our journey through the densest urban environments expected to dominate the globe in 2026.

1. Jakarta, Indonesia

With a projected population soaring past 11 million within the city limits and over 30 million in the metropolitan area by 2026, Jakarta is poised to take the crown as the world’s most populous city. In recent years, Jakarta’s explosive growth has been characterized by industrial expansion and rural-to-urban migration, as people flock to the capital for better opportunities. This hyper-dense metropolis faces unique challenges, including severe traffic congestion and the persistent threat of flooding. Nevertheless, its vibrant culture and entrepreneurial spirit attract people from all walks of life, cementing its position at the top of the global urban hierarchy.

2. Tokyo, Japan

Although Tokyo has long held the title of the world’s largest city, it is projected to slip to the second position by 2026. With a population hovering around 37 million in its metropolitan area, Tokyo remains an exemplar of an advanced urban ecosystem. Yet, it must contend with an aging demographic and a declining birth rate. Its intricate public transport system and enduring cultural significance ensure it continues to thrive, although its status as number one is no longer guaranteed. The relentless pursuit of innovation keeps Tokyo at the forefront of technology and urban living.

3. Delhi, India

Delhi is on a trajectory that may soon propel it into the top three of the world’s most populated cities. With its population expected to reach 31 million by 2026, the capital region is a tapestry of historical richness interwoven with modern aspirations. However, rapid urbanization comes with its own set of challenges, such as air pollution and inadequate infrastructure. As Delhi grapples with these growing pains, its shortcomings juxtapose beautifully with the city’s dynamic energy and pluralistic society that continues to attract migrants desiring a better life.

4. Shanghai, China

Once dubbed “the Pearl of the Orient,” Shanghai is projected to house roughly 26 million residents by 2026. This city epitomizes China’s meteoric rise and proves a paradigm of how economic reform can uplift a society. The frenetic pace of life here, underscored by awe-inspiring architecture and an impressive skyline, captures the energy of modernity. Yet, the city faces the perennial challenge of balancing rapid urban expansion with sustainability, as it deals with traffic woes and environmental concerns stemming from industrial activity.

5. São Paulo, Brazil

The largest city in South America, São Paulo is expected to maintain its position as one of the most populated cities globally with a population of approximately 22 million in 2026. Renowned for its gastronomic diversity and cultural offerings, the city serves as a melting pot for various ethnicities. However, its sprawling slums juxtaposed with luxurious high-rises highlight the stark inequality that persists in this urban giant. São Paulo’s vibrancy is both intimidating and exhilarating, challenging residents and visitors alike to navigate its complexities.

6. Mexico City, Mexico

Steeped in history yet relentlessly modernizing, Mexico City remains an urban powerhouse, expected to reach a population of around 22 million by 2026. This sprawling behemoth is replete with rich traditions and an evocative narrative that entices those who wander its streets. Yet, underneath the colorful azulejos lies a city plagued by air quality issues and social strife. The Maracanã of culture and resilience, Mexico City invites challenges, fostering innovation amidst adversity.

7. Cairo, Egypt

Cairo rounds out the list of major cities, with an anticipated population of 20 million in 2026. The city stands as a testament to centuries of civilization, captivating with its ancient monuments while simultaneously confronting the modern world. Economic challenges and infrastructural deficits create a backdrop of complexity. The youthful and industrious spirit of Cairo, however, shines through, as its residents strive for opportunity against a rich historical landscape.

8. Dhaka, Bangladesh

Projected to exceed 20 million residents by 2026, Dhaka is one of the fastest-growing cities globally. Often overlooked, this city exemplifies resilience through adversity. Its burgeoning garment industry provides livelihoods for many, yet inadequate infrastructure and overpopulation strain its resources. While the challenges are profound, the passionate spirit of its inhabitants transforms everyday struggles into a communal strength, making Dhaka a city of contrasts.

9. Kolkata, India

Expected to house around 16 million residents by 2026, Kolkata, formerly known as Calcutta, is a city filled with a unique blend of history, culture, and intellect. It is a bastion of arts and literature, but it also grapples with socio-economic challenges. The city’s unpredictable weather patterns and dense population dynamics further complicate urban planning. Yet, the indomitable spirit of its people ensures that Kolkata retains its charm amid the chaos.

10. Istanbul, Turkey

Lastly, Istanbul, with its projected population nearing 16 million by 2026, bridges two worlds—Asia and Europe. This historic city is rich in culture and cosmopolitan flair, serving as a melting pot for diverse identities. However, rapid urbanization has led to infrastructural concerns and social issues. Istanbul’s unique blend of tradition and modernity creates a captivating juxtaposition, continuing to attract both residents and visitors yearning for adventure.

As we look to the future, the question remains: are these metropolises equipped to tackle the challenges that come with their burgeoning populations? Will Jakarta truly reclaim the title as the world’s largest city, and what repercussions will this have on global dynamics? As these urban giants continue to grow, they present us with a delightful yet daunting puzzle—one that shapes not just their inhabitants but the very fabric of our interconnected world.

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