Oslo
454 km²
Vienna
415 km²
Norway
Austria
Area Comparison
Oslo is 1.1x larger than Vienna
Population Comparison
Oslo has 2.8x fewer people than Vienna
In terms of area, Oslo is 1.1x the size of Vienna. Oslo spans 454 km² (175 mi²) while Vienna covers 415 km² (160 mi²) — a difference of 39 km².
To put Oslo's size in perspective, its area of 454 km² is about 1.3x smaller than Seoul. Meanwhile, Vienna at 415 km² is about 1.5x smaller than Seoul.
Oslo's footprint is roughly about 64,000 American football fields, 130 times the area of Central Park, or 8 times the area of Manhattan — pick whichever unit feels intuitive. For Vienna, that's about 58,000 American football fields, 120 times the area of Central Park, or 7 times the area of Manhattan.
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.
Vienna is the capital, most populous city, and one of the nine states of Austria. It is Austria's primate city, with just over two million inhabitants. Its larger metropolitan area has a population of nearly 2.9 million, representing nearly one-third of the country's population. Vienna is the cultural, economic, and political centre of the country, the fifth-largest city by population in the European Union, and the most populous of the cities on the river Danube.
Also known as "City of Music", Vienna has an area of 415 km² and is home to 2.0 million people. Its history stretches back to 500 BC. Visitors come for Schönbrunn Palace, St. Stephen's Cathedral, Hofburg Palace, and much more. Getting around is easy with the Wiener Linien (U-Bahn).
Vienna's metropolitan area holds nearly 2.9 million people, representing roughly one-third of Austria's entire population
Oslo has a population density of 1,586 people per km² — a relatively spread-out city. Vienna, with 4,771 people per km², is a moderately dense city. Vienna is dramatically more crowded, with 3.0x the population density.
Density Gap
Vienna is 3.0x more densely populated
History
Vienna is ~1,548 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).
Vienna covers 415 km². Cities with a similar urban footprint include Denver (401 km²), Oslo (454 km²), Portland (376 km²), Philadelphia (370 km²), or Seattle (369 km²).
The straight-line distance from Oslo to Vienna is 1,351 km (840 miles), with an estimated flight time of ~2h 5m.
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