Helsinki
214 km²
San Diego
964 km²
Finland
United States
Area Comparison
Helsinki is 4.5x smaller than San Diego
Population Comparison
Helsinki has 2.0x fewer people than San Diego
San Diego is significantly larger, covering 4.5 times the area of Helsinki. San Diego spans 964 km² (372 mi²) while Helsinki covers 214 km² (83 mi²) — a difference of 750 km². You could fit Helsinki inside San Diego approximately 4 times.
To put Helsinki's size in perspective, its area of 214 km² is roughly the same size as Amsterdam. Meanwhile, San Diego at 964 km² is roughly the same size as Berlin.
In more relatable units, Helsinki's 214 km² is about 30,000 American football fields, 110 times the area of Monaco, or 63 times the area of Central Park. San Diego, by comparison, equals about 135,000 American football fields, 16 times the area of Manhattan, or 9 times the area of Paris.
Helsinki is the capital and most populous city in Finland. It is on the shore of the Gulf of Finland and is the seat of southern Finland's Uusimaa region. About 694,000 people live in the municipality, with 1.3 million in the capital region and 1.6 million in the metropolitan area. As the most populous urban area in Finland, it is the country's most significant centre for politics, education, finance, culture, and research.
Known as "Daughter of the Baltic", Helsinki covers 214 km² with a population of 0.7 million. The city was established in 1550. Helsinki is known for Helsinki Cathedral, Suomenlinna fortress, Temppeliaukio Church, among other attractions.
Helsinki sits on the shore of the Gulf of Finland and serves as the capital of Finland's Uusimaa region.
San Diego is a city on the Pacific coast of Southern California, adjacent to the Mexico–United States border. It is the eighth-most populous city in the U.S. and second-most populous city in California with a population of over 1.4 million, while the San Diego metropolitan area with over 3.3 million residents is the 18th-largest metropolitan area in the country. San Diego is the county seat of San Diego County.
Also known as "America's Finest City", San Diego has an area of 964 km² and is home to 1.4 million people. Its history stretches back to 1769. Visitors come for San Diego Zoo, Balboa Park, Coronado Beach, and much more.
San Diego sits directly on the Mexico-United States border, making it California's southwesternmost major city.
Helsinki has a population density of 3,224 people per km² — a moderately dense city. San Diego, with 1,442 people per km², is a relatively spread-out city. Helsinki is noticeably denser, packing 2.2 times more people per square kilometer.
Size Ratio
Helsinki fits inside San Diego ~4 times
Density Gap
Helsinki is 2.2x more densely populated
History
Helsinki is ~219 years older
Helsinki covers 214 km². Cities with a similar urban footprint include Amsterdam (219 km²), Osaka (225 km²), Buenos Aires (203 km²), Boston (232 km²), or Kuala Lumpur (243 km²).
San Diego covers 964 km². Cities with a similar urban footprint include Abu Dhabi (972 km²), Dallas (997 km²), Berlin (892 km²), Santiago (838 km²), or Hong Kong (1,114 km²).
The straight-line distance from Helsinki to San Diego is 9,122 km (5,668 miles), with an estimated flight time of ~11h 14m.
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