Hong Kong
1,114 km²
Philadelphia
370 km²
China
United States
Area Comparison
Hong Kong is 3.0x larger than Philadelphia
Population Comparison
Hong Kong has 4.6x more people than Philadelphia
Hong Kong is significantly larger, covering 3.0 times the area of Philadelphia. Hong Kong spans 1,114 km² (430 mi²) while Philadelphia covers 370 km² (143 mi²) — a difference of 744 km². You could fit Philadelphia inside Hong Kong approximately 3 times.
To put Hong Kong's size in perspective, its area of 1,114 km² is about 1.2x the size of Berlin. Meanwhile, Philadelphia at 370 km² is about 1.6x smaller than Seoul.
Hong Kong's footprint is roughly about 156,000 American football fields, 19 times the area of Manhattan, or 11 times the area of Paris — 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.
Hong Kong is a special administrative region of China. Situated on China's southern coast just south of Shenzhen, it consists of Hong Kong Island, Kowloon, and the New Territories. With 7.5 million residents in a 1,114-square-kilometre (430 sq mi) territory, Hong Kong is the fourth-most densely populated region in the world.
Known as "Pearl of the Orient", Hong Kong covers 1,114 km² with a population of 7.4 million. The city was established in 1841. Hong Kong is known for Victoria Harbour, Victoria Peak, Star Ferry, among other attractions. The city's main transit system is the MTR Hong Kong.
Hong Kong squeezes 7.5 million residents into 1,114 km2, making it the world's fourth-most densely populated region.
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.
Hong Kong has a population density of 6,652 people per km² — a densely populated city. Philadelphia, with 4,324 people per km², is a moderately dense city. Hong Kong is noticeably denser, packing 1.5 times more people per square kilometer.
Size Ratio
Philadelphia fits inside Hong Kong ~3 times
Density Gap
Hong Kong is 1.5x more densely populated
History
Philadelphia is ~159 years older
Hong Kong covers 1,114 km². Cities with a similar urban footprint include Lagos (1,172 km²), San Antonio (1,209 km²), Rio de Janeiro (1,221 km²), Dallas (997 km²), or Abu Dhabi (972 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 Hong Kong to Philadelphia is 13,023 km (8,092 miles), with an estimated flight time of ~15h 49m.
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