Lisbon
100 km²
Oslo
454 km²
Portugal
Norway
Area Comparison
Lisbon is 4.5x smaller than Oslo
Population Comparison
Lisbon has 1.3x fewer people than Oslo
Oslo is significantly larger, covering 4.5 times the area of Lisbon. Oslo spans 454 km² (175 mi²) while Lisbon covers 100 km² (39 mi²) — a difference of 354 km². You could fit Lisbon inside Oslo approximately 4 times.
To put Lisbon's size in perspective, its area of 100 km² is roughly the same size as Paris (city proper). Meanwhile, Oslo at 454 km² is about 1.3x smaller than Seoul.
Lisbon's footprint is roughly about 14,000 American football fields, 50 times the area of Monaco, or 29 times the area of Central Park — pick whichever unit feels intuitive. Oslo works out to about 64,000 American football fields, 130 times the area of Central Park, or 8 times the area of Manhattan.
Lisbon is the capital and most populous city of Portugal, with an estimated population of 575,739 as of 2024, within its administrative limits and 3,028,000 within the metropolis, as of 2025. Lisbon is mainland Europe's westernmost capital city, and the only one along the Atlantic coast, the others being on islands. The city lies in the western portion of the Iberian Peninsula, on the northern shore of the River Tagus.
Known as "City of Seven Hills", Lisbon covers 100 km² with a population of 0.6 million. The city was founded around 1200 BC. Lisbon is known for Belém Tower, Jerónimos Monastery, Tram 28, among other attractions. The city's main transit system is the Lisbon Metro.
Lisbon is mainland Europe's westernmost capital city and the only European capital along the Atlantic coast.
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. Its history stretches back to 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.
Lisbon has a population density of 5,500 people per km² — a densely populated city. Oslo, with 1,586 people per km², is a relatively spread-out city. Lisbon is dramatically more crowded, with 3.5x the population density.
Size Ratio
Lisbon fits inside Oslo ~4 times
Density Gap
Lisbon is 3.5x more densely populated
History
Lisbon is ~2,248 years older
Lisbon covers 100 km². Cities with a similar urban footprint include Barcelona (101 km²), Paris (105 km²), Copenhagen (91 km²), Zurich (88 km²), or Vancouver (115 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 Lisbon to Oslo is 2,738 km (1,701 miles), with an estimated flight time of ~3h 43m.
Want to explore more? Compare city sizes for any two cities worldwide, or share your location live with friends.