Perth
6,417 km²
San Antonio
1,209 km²
Australia
United States
Area Comparison
Perth is 5.3x larger than San Antonio
Population Comparison
Perth has 1.5x more people than San Antonio
Perth is significantly larger, covering 5.3 times the area of San Antonio. Perth spans 6,417 km² (2,478 mi²) while San Antonio covers 1,209 km² (467 mi²) — a difference of 5,208 km². You could fit San Antonio inside Perth approximately 5 times.
To put Perth's size in perspective, its area of 6,417 km² is roughly the same size as Shanghai. Meanwhile, San Antonio at 1,209 km² is about 1.3x smaller than London.
Picture Perth another way: its area is large enough to fit about 899,000 American football fields, 110 times the area of Manhattan, or 61 times the area of Paris. San Antonio, by comparison, equals about 169,000 American football fields, 20 times the area of Manhattan, or 11 times the area of Paris.
Perth is the capital city of Western Australia. It is the fourth-most-populous city in Australia, with a population of over 2.3 million within Greater Perth as of 2023. The world's most isolated major city by certain criteria, Perth is part of the South West Land Division of Western Australia, with most of Perth's metropolitan area on the Swan Coastal Plain between the Indian Ocean and the Darling Scarp.
Known as "City of Light", Perth covers 6,417 km² with a population of 2.1 million. The city was established in 1829. Perth is known for Swan River, Kings Park, Cottesloe Beach, among other attractions.
Perth is considered the world's most isolated major city by certain criteria, sitting on Australia's west coast.
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.
Nicknamed "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.
Perth has a population density of 333 people per km² — a low-density, sprawling urban area. San Antonio, with 1,183 people per km², is a relatively spread-out city. San Antonio is dramatically more crowded, with 3.6x the population density.
Size Ratio
San Antonio fits inside Perth ~5 times
Density Gap
San Antonio is 3.6x more densely populated
History
San Antonio is ~111 years older
Perth covers 6,417 km². Cities with a similar urban footprint include Shanghai (6,341 km²), Guangzhou (7,434 km²), Istanbul (5,461 km²), Wuhan (8,569 km²), or Melbourne (9,993 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 Perth to San Antonio is 16,732 km (10,397 miles), with an estimated flight time of ~20h 11m.
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