Bangkok
1,569 km²
Philadelphia
370 km²
Thailand
United States
Area Comparison
Bangkok is 4.2x larger than Philadelphia
Population Comparison
Bangkok has 6.6x more people than Philadelphia
Bangkok is significantly larger, covering 4.2 times the area of Philadelphia. Bangkok spans 1,569 km² (606 mi²) while Philadelphia covers 370 km² (143 mi²) — a difference of 1,199 km². You could fit Philadelphia inside Bangkok approximately 4 times.
To put Bangkok's size in perspective, its area of 1,569 km² is roughly the same size as London. Meanwhile, Philadelphia at 370 km² is about 1.6x smaller than Seoul.
Bangkok's footprint is roughly about 220,000 American football fields, 27 times the area of Manhattan, or 15 times the area of Paris — pick whichever unit feels intuitive. Philadelphia works out to about 52,000 American football fields, 180 times the area of Monaco, or 110 times the area of Central Park.
Bangkok, officially known in Thai as Krung Thep Maha Nakhon and colloquially as Krung Thep, is the capital and most populous city of Thailand. The city occupies 1,568.7 square kilometres (605.7 sq mi) in the Chao Phraya River delta in central Thailand and has an estimated population of 11.4 million people as of 2024, 15.9% of the country's population.
Known as "City of Angels", Bangkok covers 1,569 km² with a population of 10.5 million. The city was established in 1782. Bangkok is known for Grand Palace, Wat Arun, Wat Pho, among other attractions. The city's main transit system is the BTS Skytrain & MRT.
Bangkok's official Thai name is Krung Thep Maha Nakhon, with the full ceremonial name being one of the longest place names in the world.
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. 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.
Bangkok has a population density of 6,718 people per km² — a densely populated city. Philadelphia, with 4,324 people per km², is a moderately dense city. Bangkok is noticeably denser, packing 1.6 times more people per square kilometer.
Size Ratio
Philadelphia fits inside Bangkok ~4 times
Density Gap
Bangkok is 1.6x more densely populated
Bangkok covers 1,569 km². Cities with a similar urban footprint include London (1,572 km²), Bogotá (1,578 km²), São Paulo (1,521 km²), Johannesburg (1,644 km²), or Mexico City (1,485 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 Bangkok to Philadelphia is 14,026 km (8,715 miles), with an estimated flight time of ~17h.
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