Rio de Janeiro
1,221 km²
Seattle
369 km²
Brazil
United States
Area Comparison
Rio de Janeiro is 3.3x larger than Seattle
Population Comparison
Rio de Janeiro has 9.1x more people than Seattle
Rio de Janeiro is significantly larger, covering 3.3 times the area of Seattle. Rio de Janeiro spans 1,221 km² (471 mi²) while Seattle covers 369 km² (142 mi²) — a difference of 852 km². You could fit Seattle inside Rio de Janeiro approximately 3 times.
To put Rio de Janeiro's size in perspective, its area of 1,221 km² is about 1.3x smaller than London. Meanwhile, Seattle at 369 km² is about 1.6x smaller than Seoul.
In more relatable units, Rio de Janeiro's 1,221 km² is about 171,000 American football fields, 21 times the area of Manhattan, or 12 times the area of Paris. Seattle, by comparison, equals about 52,000 American football fields, 180 times the area of Monaco, or 110 times the area of Central Park.
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.
Seattle is the most populous city in the U.S. state of Washington and the Pacific Northwest region of North America. It is the 18th-most populous city in the United States with a population of 780,995 in 2024, while the Seattle metropolitan area at over 4.15 million residents is the 15th-most populous metropolitan area in the nation. The city is the county seat of King County, the most populous county in Washington.
Nicknamed "The Emerald City", Seattle has an area of 369 km² and is home to 0.7 million people. It was established in 1851. Visitors come for Space Needle, Pike Place Market, Starbucks headquarters, and much more.
Seattle is Washington's most populous city with 780,995 residents in 2024, anchoring the Pacific Northwest.
Rio de Janeiro has a population density of 5,528 people per km² — a densely populated city. Seattle, with 2,005 people per km², is a moderately dense city. Rio de Janeiro is noticeably denser, packing 2.8 times more people per square kilometer.
Size Ratio
Seattle fits inside Rio de Janeiro ~3 times
Density Gap
Rio de Janeiro is 2.8x more densely populated
History
Rio de Janeiro is ~286 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).
Seattle covers 369 km². Cities with a similar urban footprint include Philadelphia (370 km²), Dhaka (368 km²), Portland (376 km²), Atlanta (348 km²), or Denver (401 km²).
The straight-line distance from Rio de Janeiro to Seattle is 11,100 km (6,897 miles), with an estimated flight time of ~13h 34m.
Want to explore more? Compare city sizes for any two cities worldwide, or share your location live with friends.