Denver
401 km²
London
1,572 km²
United States
UK
Area Comparison
Denver is 3.9x smaller than London
Population Comparison
Denver has 12.5x fewer people than London
London is significantly larger, covering 3.9 times the area of Denver. London spans 1,572 km² (607 mi²) while Denver covers 401 km² (155 mi²) — a difference of 1,171 km². You could fit Denver inside London approximately 3 times.
To put Denver's size in perspective, its area of 401 km² is about 1.5x smaller than Seoul. Meanwhile, London at 1,572 km² is about 1.4x smaller than Tokyo (city proper).
In more relatable units, Denver's 401 km² is about 56,000 American football fields, 200 times the area of Monaco, or 120 times the area of Central Park. For London, that's about 220,000 American football fields, 27 times the area of Manhattan, or 15 times the area of Paris.
Denver is the capital and most populous city of the U.S. state of Colorado. Officially a consolidated city and county, it is located in the South Platte River valley on the western edge of the High Plains, and is just east of the Front Range of the Rocky Mountains (Rockies). Denver is the 19th-most populous city in the United States and the fifth-most populous state capital, with a population of 715,522 at the 2020 census.
Known as "Mile High City", Denver covers 401 km² with a population of 0.7 million. The city was established in 1858. Denver is known for Red Rocks Amphitheatre, Denver Art Museum, Union Station, among other attractions.
Denver sits in the South Platte River valley just east of the Rocky Mountains' Front Range.
London is the capital and largest city of England and the United Kingdom, with a population of 9.1 million people in 2024. Its wider metropolitan area is the largest in Western Europe, with a population of 15.1 million. London stands on the River Thames in southeast England, at the head of a 50-mile (80 km) tidal estuary down to the North Sea, and has been a major settlement for nearly 2,000 years.
Often called "The Big Smoke", London has an area of 1,572 km² and is home to 9.0 million people. The city dates back to 43. Visitors come for Big Ben, Tower Bridge, Buckingham Palace, and much more. Getting around is easy with the London Underground.
London has been a major settlement for nearly 2,000 years, tracing its roots back to Roman times around 47 AD.
Denver has a population density of 1,796 people per km² — a relatively spread-out city. London, with 5,712 people per km², is a densely populated city. London is dramatically more crowded, with 3.2x the population density.
Denver has a cold semi-arid climate climate while London experiences oceanic conditions.
Size Ratio
Denver fits inside London ~3 times
Density Gap
London is 3.2x more densely populated
History
London is ~1,815 years older
Denver covers 401 km². Cities with a similar urban footprint include Vienna (415 km²), Portland (376 km²), Philadelphia (370 km²), Seattle (369 km²), or Dhaka (368 km²).
London covers 1,572 km². Cities with a similar urban footprint include Bangkok (1,569 km²), Bogotá (1,578 km²), São Paulo (1,521 km²), Johannesburg (1,644 km²), or Mexico City (1,485 km²).
The straight-line distance from Denver to London is 7,541 km (4,685 miles), with an estimated flight time of ~9h 22m.
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