Lisbon
100 km²
Philadelphia
370 km²
Portugal
United States
Area Comparison
Lisbon is 3.7x smaller than Philadelphia
Population Comparison
Lisbon has 2.9x fewer people than Philadelphia
Philadelphia is significantly larger, covering 3.7 times the area of Lisbon. Philadelphia spans 370 km² (143 mi²) while Lisbon covers 100 km² (39 mi²) — a difference of 270 km². You could fit Lisbon inside Philadelphia approximately 3 times.
To put Lisbon's size in perspective, its area of 100 km² is roughly the same size as Paris (city proper). Meanwhile, Philadelphia at 370 km² is about 1.6x smaller than Seoul.
In more relatable units, Lisbon's 100 km² is about 14,000 American football fields, 50 times the area of Monaco, or 29 times the area of Central Park. For Philadelphia, that's about 52,000 American football fields, 180 times the area of Monaco, or 110 times the area of Central Park.
Lisbon is the capital and most populous city of Portugal, with an estimated population of 575,739 as of 2024, within its administrative limits and 3,028,000 within the metropolis, as of 2025. Lisbon is mainland Europe's westernmost capital city, and the only one along the Atlantic coast, the others being on islands. The city lies in the western portion of the Iberian Peninsula, on the northern shore of the River Tagus.
Known as "City of Seven Hills", Lisbon covers 100 km² with a population of 0.6 million. The city was founded around 1200 BC. Lisbon is known for Belém Tower, Jerónimos Monastery, Tram 28, among other attractions. The city's main transit system is the Lisbon Metro.
Lisbon is mainland Europe's westernmost capital city and the only European capital along the Atlantic coast.
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. The city dates back to 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.
Lisbon has a population density of 5,500 people per km² — a densely populated city. Philadelphia, with 4,324 people per km², is a moderately dense city. Both cities have comparable density, though Lisbon is slightly more compact.
Size Ratio
Lisbon fits inside Philadelphia ~3 times
History
Lisbon is ~2,882 years older
Lisbon covers 100 km². Cities with a similar urban footprint include Barcelona (101 km²), Paris (105 km²), Copenhagen (91 km²), Zurich (88 km²), or Vancouver (115 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 Lisbon to Philadelphia is 5,544 km (3,445 miles), with an estimated flight time of ~7h 1m.
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