Seattle
369 km²
Seoul
605 km²
United States
South Korea
Area Comparison
Seattle is 1.6x smaller than Seoul
Population Comparison
Seattle has 13.2x fewer people than Seoul
Seoul is significantly larger, covering 1.6 times the area of Seattle. Seoul spans 605 km² (234 mi²) while Seattle covers 369 km² (142 mi²) — a difference of 236 km².
To put Seattle's size in perspective, its area of 369 km² is about 1.6x smaller than Seoul. Meanwhile, Seoul at 605 km² is about 1.3x smaller than New York City.
Picture Seattle another way: its area is large enough to fit about 52,000 American football fields, 180 times the area of Monaco, or 110 times the area of Central Park. Seoul, by comparison, equals about 85,000 American football fields, 180 times the area of Central Park, or 10 times the area of Manhattan.
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.
Known as "The Emerald City", Seattle covers 369 km² with a population of 0.7 million. The city was established in 1851. Seattle is known for Space Needle, Pike Place Market, Starbucks headquarters, among other attractions.
Seattle is Washington's most populous city with 780,995 residents in 2024, anchoring the Pacific Northwest.
Seoul, officially Seoul Special Metropolitan City, is the capital and largest city of South Korea, and the largest city in the whole of Korea. The broader Seoul Metropolitan Area, encompassing Seoul, Gyeonggi Province and Incheon, emerged as the world's sixth largest metropolitan economy in 2022, behind New York, Tokyo, Los Angeles, Paris, and London, and hosts more than half of South Korea's population.
Seoul has an area of 605 km² and is home to 9.8 million people. The city dates back to 18 BC. Visitors come for Gyeongbokgung Palace, Gangnam district, Myeongdong shopping, and much more. Getting around is easy with the Seoul Metro.
Seoul Metropolitan Area emerged as the world's sixth largest metropolitan economy in 2022, behind only NYC, Tokyo, LA, Paris, and London.
Seattle has a population density of 2,005 people per km² — a moderately dense city. Seoul, with 16,149 people per km², is an extremely dense urban environment. Seoul is dramatically more crowded, with 8.1x the population density.
Density Gap
Seoul is 8.1x more densely populated
History
Seoul is ~1,869 years older
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).
Seoul covers 605 km². Cities with a similar urban footprint include Chicago (606 km²), Madrid (604 km²), Mumbai (603 km²), Toronto (630 km²), or Hyderabad (650 km²).
The straight-line distance from Seattle to Seoul is 8,323 km (5,171 miles), with an estimated flight time of ~10h 17m.
Want to explore more? Compare city sizes for any two cities worldwide, or share your location live with friends.