Los Angeles
1,302 km²
Philadelphia
370 km²
USA
United States
Area Comparison
Los Angeles is 3.5x larger than Philadelphia
Population Comparison
Los Angeles has 2.5x more people than Philadelphia
In terms of area, Los Angeles is 3.5x the size of Philadelphia. Los Angeles spans 1,302 km² (503 mi²) while Philadelphia covers 370 km² (143 mi²) — a difference of 932 km². You could fit Philadelphia inside Los Angeles approximately 3 times.
To put Los Angeles's size in perspective, its area of 1,302 km² is about 1.2x smaller than London. Meanwhile, Philadelphia at 370 km² is about 1.6x smaller than Seoul.
In more relatable units, Los Angeles's 1,302 km² is about 182,000 American football fields, 22 times the area of Manhattan, or 12 times the area of Paris. Philadelphia works out to about 52,000 American football fields, 180 times the area of Monaco, or 110 times the area of Central Park.
Los Angeles (LA) is the most populous city in the U.S. state of California, and the commercial, financial, and cultural center of Southern California. With an estimated 3.88 million residents within the city limits as of 2024, it is the second-most populous city in the United States, behind New York City, and the largest city in the Western United States. The city has an ethnically and culturally diverse population, and is the principal city of a metropolitan area of 12.9 million people (2024).
Known as "The City of Angels", Los Angeles covers 1,302 km² with a population of 4.0 million. The city was established in 1781. Los Angeles is known for Hollywood Sign, Santa Monica Pier, Beverly Hills, among other attractions. The city's main transit system is the LA Metro.
Los Angeles is the second-most populous city in the United States, home to 3.88 million residents within city limits as of 2024.
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.
Los Angeles has a population density of 3,049 people per km² — a moderately dense city. Philadelphia, with 4,324 people per km², is a moderately dense city. Both cities have comparable density, though Philadelphia is slightly more compact.
Size Ratio
Philadelphia fits inside Los Angeles ~3 times
Density Gap
Philadelphia is 1.4x more densely populated
Los Angeles covers 1,302 km². Cities with a similar urban footprint include Rome (1,285 km²), Phoenix (1,341 km²), Rio de Janeiro (1,221 km²), San Antonio (1,209 km²), or Lagos (1,172 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 Los Angeles to Philadelphia is 3,844 km (2,388 miles), with an estimated flight time of ~5h 1m.
Want to explore more? Compare city sizes for any two cities worldwide, or share your location live with friends.