Barcelona
101 km²
Philadelphia
370 km²
Spain
United States
Area Comparison
Barcelona is 3.7x smaller than Philadelphia
Population Comparison
Barcelona has 1.0x more people than Philadelphia
Philadelphia is significantly larger, covering 3.7 times the area of Barcelona. Philadelphia spans 370 km² (143 mi²) while Barcelona covers 101 km² (39 mi²) — a difference of 269 km². You could fit Barcelona inside Philadelphia approximately 3 times.
To put Barcelona's size in perspective, its area of 101 km² is roughly the same size as Paris (city proper). Meanwhile, Philadelphia at 370 km² is about 1.6x smaller than Seoul.
Barcelona's footprint is roughly about 14,000 American football fields, 50 times the area of Monaco, or 30 times the area of Central Park — pick whichever unit feels intuitive. For Philadelphia, that's about 52,000 American football fields, 180 times the area of Monaco, or 110 times the area of Central Park.
Barcelona is a city on the northeastern coast of Spain. It is the capital and largest city of the autonomous community of Catalonia, as well as the second-most populous municipality of Spain. With a population of 1.7 million within city limits, its urban area extends to numerous neighbouring municipalities within the province of Barcelona and is home to around 5.7 million people, making it the fifth most populous urban area of the European Union after Paris, the Ruhr area, Madrid and Milan.
Known as "Ciutat Comtal", Barcelona covers 101 km² with a population of 1.7 million. The city was founded around 230 BC. Barcelona is known for Sagrada Familia, Park Güell, La Rambla, among other attractions. The city's main transit system is the Barcelona Metro (TMB).
Barcelona is the second-most populous municipality in Spain and the capital of the autonomous community of Catalonia.
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.
Nicknamed "Philly", Philadelphia has an area of 370 km² and is home to 1.6 million people. Its history stretches 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.
Barcelona has a population density of 16,436 people per km² — an extremely dense urban environment. Philadelphia, with 4,324 people per km², is a moderately dense city. Barcelona is dramatically more crowded, with 3.8x the population density.
Size Ratio
Barcelona fits inside Philadelphia ~3 times
Density Gap
Barcelona is 3.8x more densely populated
History
Barcelona is ~1,912 years older
Barcelona covers 101 km². Cities with a similar urban footprint include Lisbon (100 km²), Paris (105 km²), Copenhagen (91 km²), Vancouver (115 km²), or Zurich (88 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 Barcelona to Philadelphia is 6,292 km (3,910 miles), with an estimated flight time of ~7h 54m.
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