Mumbai
603 km²
Oslo
454 km²
India
Norway
Area Comparison
Mumbai is 1.3x larger than Oslo
Population Comparison
Mumbai has 17.3x more people than Oslo
Yes — Mumbai is 1.3x larger than Oslo by area. Mumbai spans 603 km² (233 mi²) while Oslo covers 454 km² (175 mi²) — a difference of 149 km².
To put Mumbai's size in perspective, its area of 603 km² is roughly the same size as Seoul. Meanwhile, Oslo at 454 km² is about 1.3x 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. Oslo, by comparison, equals about 64,000 American football fields, 130 times the area of Central Park, or 8 times the area of Manhattan.
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.
Oslo is the capital and most populous city of Norway. It constitutes both a county and a municipality. The municipality of Oslo had a population of 724,290 in 2025, while the city's greater urban area had a population of 1,110,887 in 2025, and the metropolitan area had an estimated population of 1,546,706 in 2021.
Nicknamed "Tigerstaden", Oslo has an area of 454 km² and is home to 0.7 million people. It was established in 1048. Visitors come for Vigeland Park, Oslo Opera House, Akershus Fortress, and much more.
Oslo is both a county and a municipality, with the city itself home to about 724,000 residents in 2025.
Mumbai has a population density of 20,630 people per km² — one of the most densely packed urban areas on Earth. Oslo, with 1,586 people per km², is a relatively spread-out city. Mumbai is dramatically more crowded, with 13.0x the population density.
Density Gap
Mumbai is 13.0x more densely populated
History
Oslo is ~459 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).
Oslo covers 454 km². Cities with a similar urban footprint include Prague (496 km²), Vienna (415 km²), Montreal (498 km²), Denver (401 km²), or Warsaw (517 km²).
The straight-line distance from Mumbai to Oslo is 6,641 km (4,126 miles), with an estimated flight time of ~8h 19m.
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