Hong Kong
1,114 km²
Rio de Janeiro
1,221 km²
China
Brazil
Area Comparison
Hong Kong is 1.1x smaller than Rio de Janeiro
Population Comparison
Hong Kong has 1.1x more people than Rio de Janeiro
Rio de Janeiro is significantly larger, covering 1.1 times the area of Hong Kong. Rio de Janeiro spans 1,221 km² (471 mi²) while Hong Kong covers 1,114 km² (430 mi²) — a difference of 107 km².
To put Hong Kong's size in perspective, its area of 1,114 km² is about 1.2x the size of Berlin. Meanwhile, Rio de Janeiro at 1,221 km² is about 1.3x smaller than London.
Hong Kong's footprint is roughly about 156,000 American football fields, 19 times the area of Manhattan, or 11 times the area of Paris — pick whichever unit feels intuitive. Rio de Janeiro, by comparison, equals about 171,000 American football fields, 21 times the area of Manhattan, or 12 times the area of Paris.
Hong Kong is a special administrative region of China. Situated on China's southern coast just south of Shenzhen, it consists of Hong Kong Island, Kowloon, and the New Territories. With 7.5 million residents in a 1,114-square-kilometre (430 sq mi) territory, Hong Kong is the fourth-most densely populated region in the world.
Known as "Pearl of the Orient", Hong Kong covers 1,114 km² with a population of 7.4 million. The city was established in 1841. Hong Kong is known for Victoria Harbour, Victoria Peak, Star Ferry, among other attractions. The city's main transit system is the MTR Hong Kong.
Hong Kong squeezes 7.5 million residents into 1,114 km2, making it the world's fourth-most densely populated region.
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.
Often called "Cidade Maravilhosa", Rio de Janeiro has an area of 1,221 km² and is home to 6.8 million people. It was established in 1565. Visitors come for Christ the Redeemer, Sugarloaf Mountain, Copacabana beach, and much more. Getting around is easy with the MetrôRio.
Rio de Janeiro is the second-most-populous city in Brazil after São Paulo and the sixth-most-populous in the Americas.
Hong Kong has a population density of 6,652 people per km² — a densely populated city. Rio de Janeiro, with 5,528 people per km², is a densely populated city. Both cities have comparable density, though Hong Kong is slightly more compact.
This comparison spans continents — Hong Kong in Asia versus Rio de Janeiro in South America. Despite the geographic distance, comparing their sizes reveals surprising insights about how cities grow worldwide.
Hong Kong has a humid subtropical climate while Rio de Janeiro experiences tropical savanna conditions. When it's noon in Hong Kong, it's 1:00 AM in Rio de Janeiro — a 11-hour time difference.
Time Difference
11 hours apart
History
Rio de Janeiro is ~276 years older
Hong Kong covers 1,114 km². Cities with a similar urban footprint include Lagos (1,172 km²), San Antonio (1,209 km²), Rio de Janeiro (1,221 km²), Dallas (997 km²), or Abu Dhabi (972 km²).
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).
The straight-line distance from Hong Kong to Rio de Janeiro is 17,691 km (10,992 miles), with an estimated flight time of ~21h 19m.
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