Oslo
454 km²
Tehran
730 km²
Norway
Iran
Area Comparison
Oslo is 1.6x smaller than Tehran
Population Comparison
Oslo has 12.7x fewer people than Tehran
Tehran is significantly larger, covering 1.6 times the area of Oslo. Tehran spans 730 km² (282 mi²) while Oslo covers 454 km² (175 mi²) — a difference of 276 km².
To put Oslo's size in perspective, its area of 454 km² is about 1.3x smaller than Seoul. Meanwhile, Tehran at 730 km² is roughly the same size as New York City.
In more relatable units, Oslo's 454 km² is about 64,000 American football fields, 130 times the area of Central Park, or 8 times the area of Manhattan. Tehran works out to about 102,000 American football fields, 12 times the area of Manhattan, or 7 times the area of Paris.
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.
Known as "Tigerstaden", Oslo covers 454 km² with a population of 0.7 million. The city was established in 1048. Oslo is known for Vigeland Park, Oslo Opera House, Akershus Fortress, among other attractions.
Oslo is both a county and a municipality, with the city itself home to about 724,000 residents in 2025.
Tehran is the capital and largest city of Iran. It is also the capital of Tehran province and the administrative center for Tehran County and its Central District. With a population of around 9 million in the city, and 16.8 million in the metropolitan area, Tehran is the most populous city in Iran and West Asia, the second-largest metropolitan area in the Middle East after Cairo, and the 24th-most-populous metropolitan area in the world.
Tehran has an area of 730 km² and is home to 9.1 million people. The city dates back to 1524. Visitors come for Azadi Tower, Milad Tower, Golestan Palace, and much more. Getting around is easy with the Tehran Metro.
Tehran's metropolitan area holds 16.8 million people, making it the second-largest metropolitan area in the Middle East after Cairo.
Oslo has a population density of 1,586 people per km² — a relatively spread-out city. Tehran, with 12,507 people per km², is an extremely dense urban environment. Tehran is dramatically more crowded, with 7.9x the population density.
Density Gap
Tehran is 7.9x more densely populated
History
Oslo is ~476 years older
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).
Tehran covers 730 km². Cities with a similar urban footprint include Singapore (733 km²), Bangalore (741 km²), Hamburg (755 km²), Nairobi (696 km²), or New York (783 km²).
The straight-line distance from Oslo to Tehran is 3,952 km (2,456 miles), with an estimated flight time of ~5h 9m.
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