Moscow
2,511 km²
Philadelphia
370 km²
Russia
United States
Area Comparison
Moscow is 6.8x larger than Philadelphia
Population Comparison
Moscow has 7.8x more people than Philadelphia
In terms of area, Moscow is 6.8x the size of Philadelphia. Moscow spans 2,511 km² (970 mi²) while Philadelphia covers 370 km² (143 mi²) — a difference of 2,141 km². You could fit Philadelphia inside Moscow approximately 6 times.
To put Moscow's size in perspective, its area of 2,511 km² is roughly the same size as Luxembourg. Meanwhile, Philadelphia at 370 km² is about 1.6x smaller than Seoul.
Picture Moscow another way: its area is large enough to fit about 352,000 American football fields, 42 times the area of Manhattan, or 24 times the area of Paris. For Philadelphia, that's about 52,000 American football fields, 180 times the area of Monaco, or 110 times the area of Central Park.
Moscow is the capital and largest city of Russia, standing on the Moskva River in Central Russia. It has a population estimated at over 13 million residents within the city limits, over 19.1 million residents in the urban area, and over 21.5 million residents in its metropolitan area. The city covers an area of 2,511 square kilometers (970 mi2), while the urban area covers 5,891 square kilometers (2,275 mi2), and the metropolitan area covers over 26,000 square kilometers (10,000 mi2).
Known as "Third Rome", Moscow covers 2,511 km² with a population of 12.5 million. The city was established in 1147. Moscow is known for Red Square, Kremlin, Saint Basil's Cathedral, among other attractions. The city's main transit system is the Moscow Metro.
Moscow's metropolitan area covers over 26,000 square kilometers, making it one of the largest metropolitan footprints in Europe.
Philadelphia, colloquially referred to as Philly, is the most populous city in the U.S. state of Pennsylvania, and the sixth-most populous city in the United States, with a Census-estimated population of 1,574,281 in July 2025. The Philadelphia metropolitan area has 6.33 million residents and is the nation's ninth-largest metropolitan area. Philadelphia is known for its culture, cuisine, and history, maintaining contemporary influence in business and technology, sports, and music.
Often called "Philly", Philadelphia has an area of 370 km² and is home to 1.6 million people. It was established in 1682. Visitors come for Liberty Bell, Independence Hall, Philly Cheesesteak, and much more.
Philadelphia is the sixth-most populous US city, with an estimated 1,574,281 residents as of July 2025.
Moscow has a population density of 4,994 people per km² — a moderately dense city. Philadelphia, with 4,324 people per km², is a moderately dense city. Both cities have comparable density, though Moscow is slightly more compact.
Size Ratio
Philadelphia fits inside Moscow ~6 times
History
Moscow is ~535 years older
Moscow covers 2,511 km². Cities with a similar urban footprint include Cape Town (2,455 km²), Lima (2,672 km²), Tokyo (2,194 km²), Ho Chi Minh City (2,061 km²), or Cairo (3,085 km²).
Philadelphia covers 370 km². Cities with a similar urban footprint include Seattle (369 km²), Dhaka (368 km²), Portland (376 km²), Atlanta (348 km²), or Denver (401 km²).
The straight-line distance from Moscow to Philadelphia is 7,635 km (4,744 miles), with an estimated flight time of ~9h 29m.
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