Philadelphia
370 km²
Tehran
730 km²
United States
Iran
Area Comparison
Philadelphia is 2.0x smaller than Tehran
Population Comparison
Philadelphia has 5.7x fewer people than Tehran
Tehran is significantly larger, covering 2.0 times the area of Philadelphia. Tehran spans 730 km² (282 mi²) while Philadelphia covers 370 km² (143 mi²) — a difference of 360 km².
To put Philadelphia's size in perspective, its area of 370 km² is about 1.6x smaller than Seoul. Meanwhile, Tehran at 730 km² is roughly the same size as New York City.
In more relatable units, Philadelphia's 370 km² is about 52,000 American football fields, 180 times the area of Monaco, or 110 times the area of Central Park. For Tehran, that's about 102,000 American football fields, 12 times the area of Manhattan, or 7 times the area of Paris.
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.
Known as "Philly", Philadelphia covers 370 km² with a population of 1.6 million. The city was established in 1682. Philadelphia is known for Liberty Bell, Independence Hall, Philly Cheesesteak, among other attractions.
Philadelphia is the sixth-most populous US city, with an estimated 1,574,281 residents as of July 2025.
Tehran is the capital and largest city of Iran. It is also the capital of Tehran province and the administrative center for Tehran County and its Central District. With a population of around 9 million in the city, and 16.8 million in the metropolitan area, Tehran is the most populous city in Iran and West Asia, the second-largest metropolitan area in the Middle East after Cairo, and the 24th-most-populous metropolitan area in the world.
Tehran has an area of 730 km² and is home to 9.1 million people. The city dates back to 1524. Visitors come for Azadi Tower, Milad Tower, Golestan Palace, and much more. Getting around is easy with the Tehran Metro.
Tehran's metropolitan area holds 16.8 million people, making it the second-largest metropolitan area in the Middle East after Cairo.
Philadelphia has a population density of 4,324 people per km² — a moderately dense city. Tehran, with 12,507 people per km², is an extremely dense urban environment. Tehran is noticeably denser, packing 2.9 times more people per square kilometer.
Density Gap
Tehran is 2.9x more densely populated
History
Tehran is ~158 years older
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).
Tehran covers 730 km². Cities with a similar urban footprint include Singapore (733 km²), Bangalore (741 km²), Hamburg (755 km²), Nairobi (696 km²), or New York (783 km²).
The straight-line distance from Philadelphia to Tehran is 9,983 km (6,203 miles), with an estimated flight time of ~12h 15m.
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