Chengdu
14,378 km²
Philadelphia
370 km²
People's Republic of China
United States
Area Comparison
Chengdu is 38.9x larger than Philadelphia
Population Comparison
Chengdu has 13.1x more people than Philadelphia
In terms of area, Chengdu is 38.9x the size of Philadelphia. Chengdu spans 14,378 km² (5,551 mi²) while Philadelphia covers 370 km² (143 mi²) — a difference of 14,008 km². You could fit Philadelphia inside Chengdu approximately 38 times.
To put Chengdu's size in perspective, its area of 14,378 km² is about 2.3x the size of Shanghai. Meanwhile, Philadelphia at 370 km² is about 1.6x smaller than Seoul.
Picture Chengdu another way: its area is large enough to fit about 2,000,000 American football fields, 140 times the area of Paris, or 120 times the area of San Francisco. For Philadelphia, that's about 52,000 American football fields, 180 times the area of Monaco, or 110 times the area of Central Park.
Chengdu is the capital city of the Chinese province of Sichuan. With a population of 20,937,757 at the 2020 census, it is the fourth most populous city in China, and it is the only city with a population of over 20 million apart from provincial-level municipalities. It is traditionally the hub of Western China.
Known as "Land of Abundance", Chengdu covers 14,378 km² with a population of 20.9 million. The city was founded around 310 BC. Chengdu is known for Giant Panda Breeding Base, Jinli Ancient Street, Wuhou Shrine, among other attractions.
Chengdu has a population of over 20.9 million, making it the fourth most populous city in China.
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.
Chengdu has a population density of 1,456 people per km² — a relatively spread-out city. Philadelphia, with 4,324 people per km², is a moderately dense city. Philadelphia is noticeably denser, packing 3.0 times more people per square kilometer.
Size Ratio
Philadelphia fits inside Chengdu ~38 times
Density Gap
Philadelphia is 3.0x more densely populated
History
Chengdu is ~1,992 years older
Chengdu covers 14,378 km². Cities with a similar urban footprint include Brisbane (15,826 km²), Beijing (16,411 km²), Sydney (12,368 km²), Hangzhou (16,854 km²), or Xi'an (10,097 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).
Chengdu vs Santiago
People's Republic of China / Chile
Chengdu vs Wuhan
People's Republic of China / People's Republic of China
Chengdu vs Washington D.C.
People's Republic of China / USA
Philadelphia vs São Paulo
United States / Brazil
Dhaka vs Philadelphia
Bangladesh / United States
Philadelphia vs San Francisco
United States / USA
The straight-line distance from Chengdu to Philadelphia is 12,163 km (7,558 miles), with an estimated flight time of ~14h 49m.
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