Denver
401 km²
Madrid
604 km²
United States
Spain
Area Comparison
Denver is 1.5x smaller than Madrid
Population Comparison
Denver has 4.6x fewer people than Madrid
In terms of area, Madrid is 1.5x the size of Denver. Madrid spans 604 km² (233 mi²) while Denver covers 401 km² (155 mi²) — a difference of 203 km².
To put Denver's size in perspective, its area of 401 km² is about 1.5x smaller than Seoul. Meanwhile, Madrid at 604 km² is roughly the same size as Seoul.
Denver's footprint is roughly about 56,000 American football fields, 200 times the area of Monaco, or 120 times the area of Central Park — pick whichever unit feels intuitive. Madrid works out to about 85,000 American football fields, 180 times the area of Central Park, or 10 times the area of Manhattan.
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.
Madrid is the capital and most populous city of Spain. It had a population of over 3.4 million in the city proper in 2025, and a metropolitan area population of approximately 6.8 million. Madrid is the second-largest city in the European Union (EU), after Berlin, and its metropolitan area is the second-largest in the EU, after Paris. The municipality covers an area of 605.77 square kilometres (233.89 sq mi).
Also known as "La Villa y Corte", Madrid has an area of 604 km² and is home to 3.3 million people. Its history stretches back to 852. Visitors come for Royal Palace of Madrid, Prado Museum, Plaza Mayor, and much more. Getting around is easy with the Madrid Metro.
Madrid is the second-largest city in the European Union after Berlin, with over 3.4 million residents in the city proper
Denver has a population density of 1,796 people per km² — a relatively spread-out city. Madrid, with 5,513 people per km², is a densely populated city. Madrid is dramatically more crowded, with 3.1x the population density.
Denver has a cold semi-arid climate climate while Madrid experiences hot-summer Mediterranean conditions.
Density Gap
Madrid is 3.1x more densely populated
History
Madrid is ~1,006 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).
Madrid covers 604 km². Cities with a similar urban footprint include Seoul (605 km²), Mumbai (603 km²), Chicago (606 km²), Toronto (630 km²), or Hyderabad (650 km²).
The straight-line distance from Denver to Madrid is 8,067 km (5,013 miles), with an estimated flight time of ~9h 59m.
Want to explore more? Compare city sizes for any two cities worldwide, or share your location live with friends.