Rio de Janeiro
1,221 km²
San Antonio
1,209 km²
Brazil
United States
Area Comparison
Rio de Janeiro is 1.0x larger than San Antonio
Population Comparison
Rio de Janeiro has 4.7x more people than San Antonio
In terms of area, Rio de Janeiro is 1.0x the size of San Antonio. Rio de Janeiro spans 1,221 km² (471 mi²) while San Antonio covers 1,209 km² (467 mi²) — a difference of 12 km².
To put Rio de Janeiro's size in perspective, its area of 1,221 km² is about 1.3x smaller than London. Meanwhile, San Antonio at 1,209 km² is about 1.3x smaller than London.
Rio de Janeiro's footprint is roughly about 171,000 American football fields, 21 times the area of Manhattan, or 12 times the area of Paris — pick whichever unit feels intuitive. San Antonio works out to about 169,000 American football fields, 20 times the area of Manhattan, or 11 times the area of Paris.
Rio de Janeiro, also known simply as Rio, is the capital of the state of Rio de Janeiro. It is the second-most-populous city in Brazil after São Paulo and the sixth-most-populous city in the Americas.
Known as "Cidade Maravilhosa", Rio de Janeiro covers 1,221 km² with a population of 6.8 million. The city was established in 1565. Rio de Janeiro is known for Christ the Redeemer, Sugarloaf Mountain, Copacabana beach, among other attractions. The city's main transit system is the MetrôRio.
Rio de Janeiro is the second-most-populous city in Brazil after São Paulo and the sixth-most-populous in the Americas.
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. The city dates back to 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.
Rio de Janeiro has a population density of 5,528 people per km² — a densely populated city. San Antonio, with 1,183 people per km², is a relatively spread-out city. Rio de Janeiro is dramatically more crowded, with 4.7x the population density.
Density Gap
Rio de Janeiro is 4.7x more densely populated
History
Rio de Janeiro is ~153 years older
Rio de Janeiro covers 1,221 km². Cities with a similar urban footprint include San Antonio (1,209 km²), Lagos (1,172 km²), Rome (1,285 km²), Los Angeles (1,302 km²), or Hong Kong (1,114 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 Rio de Janeiro to San Antonio is 8,297 km (5,156 miles), with an estimated flight time of ~10h 16m.
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