Kuala Lumpur
243 km²
Philadelphia
370 km²
Malaysia
United States
Area Comparison
Kuala Lumpur is 1.5x smaller than Philadelphia
Population Comparison
Kuala Lumpur has 1.2x more people than Philadelphia
In terms of area, Philadelphia is 1.5x the size of Kuala Lumpur. Philadelphia spans 370 km² (143 mi²) while Kuala Lumpur covers 243 km² (94 mi²) — a difference of 127 km².
To put Kuala Lumpur's size in perspective, its area of 243 km² is about 1.1x the size of Amsterdam. Meanwhile, Philadelphia at 370 km² is about 1.6x smaller than Seoul.
Kuala Lumpur's footprint is roughly about 34,000 American football fields, 120 times the area of Monaco, or 71 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.
Kuala Lumpur (KL), officially the Federal Territory of Kuala Lumpur, is the capital city and a federal territory of Malaysia. It is the most populous city in the country, covering an area of 243 km2 (94 sq mi) with a population of 2,075,600 as of 2024. Greater Kuala Lumpur, which itself includes the Klang Valley, is an urban agglomeration of 8.8 million people as of 2024. It is among the fastest growing metropolitan regions in Southeast Asia, in terms of both population and economic development.
Known as "KL", Kuala Lumpur covers 243 km² with a population of 2.0 million. The city was established in 1857. Kuala Lumpur is known for Petronas Twin Towers, Batu Caves, Merdeka 118, among other attractions. The city's main transit system is the RapidKL (LRT, MRT & Monorail).
Kuala Lumpur packs 2.07 million people into just 243 km2, making it Malaysia's most populous city by far
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.
Also known as "Philly", Philadelphia has an area of 370 km² and is home to 1.6 million people. It was established in 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.
Kuala Lumpur has a population density of 8,148 people per km² — a densely populated city. Philadelphia, with 4,324 people per km², is a moderately dense city. Kuala Lumpur is noticeably denser, packing 1.9 times more people per square kilometer.
Density Gap
Kuala Lumpur is 1.9x more densely populated
History
Philadelphia is ~175 years older
Kuala Lumpur covers 243 km². Cities with a similar urban footprint include Boston (232 km²), Edinburgh (259 km²), Osaka (225 km²), Amsterdam (219 km²), or Taipei (272 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 Kuala Lumpur to Philadelphia is 15,213 km (9,453 miles), with an estimated flight time of ~18h 24m.
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