What Happened to Mumbai (formerly Bombay)?

The city now known as Mumbai has a rich and complex history, with evidence of human settlements dating back to the Stone Age. Its earliest written mentions appear in Greek sources around 250 BCE. The region was ruled by various dynasties until the Portuguese seized it in 1534, naming it 'Bombaim'. In 1661, it was ceded to the British as part of Catherine of Braganza's dowry to King Charles II, who later leased it to the East India Company. The British developed it into a major port city, and the name 'Bombay' became widely used.

The pivotal moment in its modern identity came on March 4, 1995, when the Maharashtra government officially changed the city's name from Bombay to Mumbai. This change, driven by the Marathi nationalist Shiv Sena party, aimed to shed colonial vestiges and honor Mumbadevi, the patron goddess of the native Koli community. While some residents and people from other regions still use 'Bombay,' the official adoption of 'Mumbai' symbolized a reassertion of local cultural identity.

Economically, Mumbai remains the financial capital of India, contributing significantly to Maharashtra's and the national GDP. Its urban economy is the largest of any South Asian city, with a nominal GDP estimated at US$277.98 billion. The state of Maharashtra, of which Mumbai is the capital, is projected to grow at 7.9% in FY26, with services and industry sectors performing strongly. The city's real estate market, despite a cooling in new housing launches in 2025, is expected to see continued growth in 2026, driven by infrastructure improvements and demand for luxury projects.

Recent years have seen an unprecedented infrastructure boom. The Mumbai Trans Harbour Link (Atal Setu), India's longest sea bridge, was inaugurated in January 2024, drastically cutting travel time between Mumbai and Navi Mumbai. As of March 27, 2026, it had already witnessed over 2 crore (20 million) vehicle movements. The Mumbai Coastal Road project, an 8-lane expressway, saw its first phase open in March 2024, with full completion expected by 2026. The Navi Mumbai International Airport (NMIA) is a major upcoming project, with Phase 1 expected to be operational for domestic flights by May 2025 and international flights by July 2025, with its first commercial flight scheduled for December 2025. The Mumbai Metro network is also expanding rapidly, with Line 3 (Aqua Line) targeted to be fully operational by August 2025.

However, Mumbai faces significant urban challenges. Rapid population growth, estimated at 22,539,300 for the metro area in 2026, leads to high population density and issues like affordable housing shortages and the persistence of slums. Environmental concerns are pressing, with Mumbai routinely experiencing poor air quality, especially in early 2026, and facing vulnerabilities to sea-level rise and storm surges due to climate change. Urban planning efforts are underway to address these, including the 'Mumbai 3.0' vision unveiled at the World Economic Forum in January 2026, which aims to create a future-ready megacity nearly three times the size of present-day Mumbai, with dedicated zones for education, healthcare, and innovation. The city is also hosting the Earthshot Prize in November 2026, highlighting its role in climate solutions.