Boston
232 km²
Miami
143 km²
USA
USA
Area Comparison
Boston is 1.6x larger than Miami
Population Comparison
Boston has 1.5x more people than Miami
In terms of area, Boston is 1.6x the size of Miami. Boston spans 232 km² (90 mi²) while Miami covers 143 km² (55 mi²) — a difference of 89 km².
To put Boston's size in perspective, its area of 232 km² is roughly the same size as Amsterdam. Meanwhile, Miami at 143 km² is about 1.2x the size of San Francisco.
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. For Miami, that's about 20,000 American football fields, 71 times the area of Monaco, or 42 times the area of Central Park.
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
Miami is a coastal city in the U.S. state of Florida. It is the second-most populous city proper in Florida, with a population of 442,241 at the 2020 census. The Miami metropolitan area in South Florida has an estimated 6.39 million residents, ranking as the fifth-largest metropolitan area in the Southeast and eighth-largest metropolitan area in the United States. Miami has the third-largest skyline in the U.S. with over 300 high-rises, 70 of which exceed 491 ft (150 m).
Often called "Magic City", Miami has an area of 143 km² and is home to 0.4 million people. The city dates back to 1896. Visitors come for South Beach, Art Deco Historic District, Little Havana, and much more. Getting around is easy with the Metrorail Miami.
Miami boasts the third-largest skyline in the U.S. with over 300 high-rises, 70 of them topping 491 feet
Looking beyond city limits, the Miami metropolitan area covers 15,890 km², which is 1.4x larger than greater Boston at 11,700 km². The Miami metro area is also more populous, with 6.2 million people compared to 4.9 million.
Boston has a population density of 2,931 people per km² — a moderately dense city. Miami, with 3,077 people per km², is a moderately dense city. Both cities have comparable density, though Miami is slightly more compact.
Both Boston and Miami are in USA, making this a domestic size comparison that reveals how differently cities can develop within the same nation.
Boston has a humid continental climate while Miami experiences tropical monsoon conditions. Winters differ dramatically: Miami stays around 20°C while Boston drops to -1°C.
History
Boston is ~266 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).
Miami covers 143 km². Cities with a similar urban footprint include Minneapolis (149 km²), Brussels (161 km²), San Francisco (121 km²), Washington D.C. (177 km²), or Vancouver (115 km²).
The straight-line distance from Boston to Miami is 2,025 km (1,258 miles), with an estimated flight time of ~2h 53m.
Want to explore more? Compare city sizes for any two cities worldwide, or share your location live with friends.