Oslo
454 km²
San Antonio
1,209 km²
Norway
United States
Area Comparison
Oslo is 2.7x smaller than San Antonio
Population Comparison
Oslo has 2.0x fewer people than San Antonio
In terms of area, San Antonio is 2.7x the size of Oslo. San Antonio spans 1,209 km² (467 mi²) while Oslo covers 454 km² (175 mi²) — a difference of 755 km². You could fit Oslo inside San Antonio approximately 2 times.
To put Oslo's size in perspective, its area of 454 km² is about 1.3x smaller than Seoul. Meanwhile, San Antonio at 1,209 km² is about 1.3x smaller than London.
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 San Antonio, that's about 169,000 American football fields, 20 times the area of Manhattan, or 11 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.
San Antonio is a city in the U.S. state of Texas. It is the seventh-most populous city in the United States, the second-most populous city in Texas, and the second-most populous city in the Southern U.S., with a population of 1.43 million at the 2020 census. The Greater San Antonio metropolitan area, with an estimated 2.76 million residents, ranks as the third-largest metropolitan area in Texas and the 24th-largest in the nation. It is the county seat of Bexar County.
Also known as "Alamo City", San Antonio has an area of 1,209 km² and is home to 1.4 million people. It was established in 1718. Visitors come for The Alamo, San Antonio River Walk, Tower of the Americas, and much more.
San Antonio is the seventh-most populous city in the United States and second-most populous in Texas, with 1.43 million residents.
Oslo has a population density of 1,586 people per km² — a relatively spread-out city. San Antonio, with 1,183 people per km², is a relatively spread-out city. Both cities have comparable density, though Oslo is slightly more compact.
Size Ratio
Oslo fits inside San Antonio ~2 times
Density Gap
Oslo is 1.3x more densely populated
History
Oslo is ~670 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).
San Antonio covers 1,209 km². Cities with a similar urban footprint include Rio de Janeiro (1,221 km²), Lagos (1,172 km²), Rome (1,285 km²), Los Angeles (1,302 km²), or Hong Kong (1,114 km²).
The straight-line distance from Oslo to San Antonio is 8,191 km (5,090 miles), with an estimated flight time of ~10h 8m.
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