Boston
232 km²
Copenhagen
91 km²
USA
Denmark
Area Comparison
Boston is 2.5x larger than Copenhagen
Population Comparison
Boston has 1.0x more people than Copenhagen
In terms of area, Boston is 2.5x the size of Copenhagen. Boston spans 232 km² (90 mi²) while Copenhagen covers 91 km² (35 mi²) — a difference of 141 km². You could fit Copenhagen inside Boston approximately 2 times.
To put Boston's size in perspective, its area of 232 km² is roughly the same size as Amsterdam. Meanwhile, Copenhagen at 91 km² is about 1.2x smaller than Paris (city proper).
Boston's footprint is roughly about 32,000 American football fields, 110 times the area of Monaco, or 68 times the area of Central Park — pick whichever unit feels intuitive. Copenhagen works out to about 13,000 American football fields, 190 times the area of Vatican City, or 45 times the area of Monaco.
Boston is the capital and most populous city of the U.S. state of Massachusetts. It serves as a cultural and financial center of New England, a region of the Northeastern United States. Boston has an area of 48.4 sq mi (125 km2) and a population of 675,647 as of the 2020 census, making it the third-most populous city in the Northeastern United States after New York City and Philadelphia.
Known as "Beantown", Boston covers 232 km² with a population of 0.7 million. The city was established in 1630. Boston is known for Fenway Park, Freedom Trail, Harvard University, among other attractions. The city's main transit system is the MBTA (The T).
Boston covers just 125 km2 yet serves as the cultural and financial heart of all New England
Copenhagen is the capital and most populous city of both the country of Denmark and the wider Kingdom of Denmark, with a population of 667,000 people in the municipality and 1.4 million in the urban area. The city is situated mainly on the island of Zealand (Sjælland), with a smaller part on the island of Amager. Copenhagen is separated from Malmö, Sweden, by the Øresund strait. The Øresund Bridge connects the two cities by rail and road.
Often called "City of Spires", Copenhagen has an area of 91 km² and is home to 0.7 million people. The city dates back to 1167. Visitors come for The Little Mermaid statue, Tivoli Gardens, Nyhavn waterfront, and much more.
Copenhagen sits mainly on the island of Zealand, with a smaller portion on the island of Amager.
Boston has a population density of 2,931 people per km² — a moderately dense city. Copenhagen, with 7,363 people per km², is a densely populated city. Copenhagen is noticeably denser, packing 2.5 times more people per square kilometer.
Size Ratio
Copenhagen fits inside Boston ~2 times
Density Gap
Copenhagen is 2.5x more densely populated
History
Copenhagen is ~463 years older
Boston covers 232 km². Cities with a similar urban footprint include Osaka (225 km²), Kuala Lumpur (243 km²), Amsterdam (219 km²), Helsinki (214 km²), or Edinburgh (259 km²).
Copenhagen covers 91 km². Cities with a similar urban footprint include Zurich (88 km²), Lisbon (100 km²), Barcelona (101 km²), Paris (105 km²), or Vancouver (115 km²).
The straight-line distance from Boston to Copenhagen is 5,886 km (3,658 miles), with an estimated flight time of ~7h 25m.
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