Mumbai
603 km²
Philadelphia
370 km²
India
United States
Area Comparison
Mumbai is 1.6x larger than Philadelphia
Population Comparison
Mumbai has 7.8x more people than Philadelphia
Yes — Mumbai is 1.6x larger than Philadelphia by area. Mumbai spans 603 km² (233 mi²) while Philadelphia covers 370 km² (143 mi²) — a difference of 233 km².
To put Mumbai's size in perspective, its area of 603 km² is roughly the same size as Seoul. Meanwhile, Philadelphia at 370 km² is about 1.6x smaller than Seoul.
In more relatable units, Mumbai's 603 km² is about 84,000 American football fields, 180 times the area of Central Park, or 10 times the area of Manhattan. For Philadelphia, that's about 52,000 American football fields, 180 times the area of Monaco, or 110 times the area of Central Park.
Mumbai, also known as Bombay, is the capital city of the Indian state of Maharashtra. Mumbai is the financial capital and the most populous city proper of India, with an estimated population of 12.5 million (1.25 crore). Mumbai is the centre of the Mumbai Metropolitan Region, which is among the most populous metropolitan areas in the world with a population of over 23 million. Mumbai lies on the Konkan coast on the west coast of India and has a deep natural harbour.
Known as "Bombay", Mumbai covers 603 km² with a population of 12.4 million. The city was established in 1507. Mumbai is known for Gateway of India, Marine Drive, Bollywood, among other attractions. The city's main transit system is the Mumbai Suburban Railway.
Mumbai is the most populous city proper in India and serves as the country's financial capital with around 12.5 million residents.
Philadelphia, colloquially referred to as Philly, is the most populous city in the U.S. state of Pennsylvania, and the sixth-most populous city in the United States, with a Census-estimated population of 1,574,281 in July 2025. The Philadelphia metropolitan area has 6.33 million residents and is the nation's ninth-largest metropolitan area. Philadelphia is known for its culture, cuisine, and history, maintaining contemporary influence in business and technology, sports, and music.
Nicknamed "Philly", Philadelphia has an area of 370 km² and is home to 1.6 million people. Its history stretches back to 1682. Visitors come for Liberty Bell, Independence Hall, Philly Cheesesteak, and much more.
Philadelphia is the sixth-most populous US city, with an estimated 1,574,281 residents as of July 2025.
Mumbai has a population density of 20,630 people per km² — one of the most densely packed urban areas on Earth. Philadelphia, with 4,324 people per km², is a moderately dense city. Mumbai is dramatically more crowded, with 4.8x the population density.
Density Gap
Mumbai is 4.8x more densely populated
History
Mumbai is ~175 years older
Mumbai covers 603 km². Cities with a similar urban footprint include Madrid (604 km²), Seoul (605 km²), Chicago (606 km²), Toronto (630 km²), or Hyderabad (650 km²).
Philadelphia covers 370 km². Cities with a similar urban footprint include Seattle (369 km²), Dhaka (368 km²), Portland (376 km²), Atlanta (348 km²), or Denver (401 km²).
The straight-line distance from Mumbai to Philadelphia is 12,663 km (7,868 miles), with an estimated flight time of ~15h 24m.
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