Boston
232 km²
Mumbai
603 km²
USA
India
Area Comparison
Boston is 2.6x smaller than Mumbai
Population Comparison
Boston has 18.3x fewer people than Mumbai
Mumbai is significantly larger, covering 2.6 times the area of Boston. Mumbai spans 603 km² (233 mi²) while Boston covers 232 km² (90 mi²) — a difference of 371 km². You could fit Boston inside Mumbai approximately 2 times.
To put Boston's size in perspective, its area of 232 km² is roughly the same size as Amsterdam. Meanwhile, Mumbai at 603 km² is roughly the same size as Seoul.
Picture Boston another way: its area is large enough to fit about 32,000 American football fields, 110 times the area of Monaco, or 68 times the area of Central Park. Mumbai, by comparison, equals about 84,000 American football fields, 180 times the area of Central Park, or 10 times the area of Manhattan.
Boston is the capital and most populous city of the U.S. state of Massachusetts. It serves as a cultural and financial center of New England, a region of the Northeastern United States. Boston has an area of 48.4 sq mi (125 km2) and a population of 675,647 as of the 2020 census, making it the third-most populous city in the Northeastern United States after New York City and Philadelphia.
Known as "Beantown", Boston covers 232 km² with a population of 0.7 million. The city was established in 1630. Boston is known for Fenway Park, Freedom Trail, Harvard University, among other attractions. The city's main transit system is the MBTA (The T).
Boston covers just 125 km2 yet serves as the cultural and financial heart of all New England
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.
Also known as "Bombay", Mumbai has an area of 603 km² and is home to 12.4 million people. The city dates back to 1507. Visitors come for Gateway of India, Marine Drive, Bollywood, and much more. Getting around is easy with 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.
Looking beyond city limits, the Boston metropolitan area covers 11,700 km², which is 1.8x larger than greater Mumbai at 6,355 km². The Mumbai metro area is also more populous, with 20.7 million people compared to 4.9 million.
Boston has a population density of 2,931 people per km² — a moderately dense city. Mumbai, with 20,630 people per km², is one of the most densely packed urban areas on Earth. Mumbai is dramatically more crowded, with 7.0x the population density.
This comparison spans continents — Boston in North America versus Mumbai in Asia. Despite the geographic distance, comparing their sizes reveals surprising insights about how cities grow worldwide.
Boston has a humid continental climate while Mumbai experiences tropical wet and dry conditions. Winters differ dramatically: Mumbai stays around 25°C while Boston drops to -1°C. When it's noon in Mumbai, it's 1.5:00 AM in Boston — a 10.5-hour time difference.
Size Ratio
Boston fits inside Mumbai ~2 times
Density Gap
Mumbai is 7.0x more densely populated
Time Difference
10.5 hours apart
History
Mumbai is ~123 years older
Boston covers 232 km². Cities with a similar urban footprint include Osaka (225 km²), Kuala Lumpur (243 km²), Amsterdam (219 km²), Helsinki (214 km²), or Edinburgh (259 km²).
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).
The straight-line distance from Boston to Mumbai is 12,247 km (7,610 miles), with an estimated flight time of ~14h 54m.
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