Hong Kong
1,114 km²
San Francisco
121 km²
China
USA
Area Comparison
Hong Kong is 9.2x larger than San Francisco
Population Comparison
Hong Kong has 8.5x more people than San Francisco
Yes — Hong Kong is 9.2x larger than San Francisco by area. Hong Kong spans 1,114 km² (430 mi²) while San Francisco covers 121 km² (47 mi²) — a difference of 993 km². You could fit San Francisco inside Hong Kong approximately 9 times.
To put Hong Kong's size in perspective, its area of 1,114 km² is about 1.2x the size of Berlin. Meanwhile, San Francisco at 121 km² is about 1.2x the size of Paris (city proper).
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. San Francisco, by comparison, equals about 17,000 American football fields, 60 times the area of Monaco, or 35 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.
San Francisco, officially the City and County of San Francisco, is the fourth-most populous city in California and the 17th-most populous in the United States, with a population of 826,079 in 2025. Among U.S. cities with a population of 300,000 or more, San Francisco is ranked first by per capita income, second by population density, and sixth by aggregate income as of 2023.
Nicknamed "The City by the Bay", San Francisco has an area of 121 km² and is home to 0.9 million people. It was established in 1776. Visitors come for Golden Gate Bridge, Alcatraz Island, Cable cars, and much more. Getting around is easy with the BART & Muni.
San Francisco ranks first by per capita income among all US cities with 300,000+ residents as of 2023.
Hong Kong has a population density of 6,652 people per km² — a densely populated city. San Francisco, with 7,190 people per km², is a densely populated city. Both cities have comparable density, though San Francisco is slightly more compact.
This comparison spans continents — Hong Kong in Asia versus San Francisco in North America. Despite the geographic distance, comparing their sizes reveals surprising insights about how cities grow worldwide.
Hong Kong has a humid subtropical climate while San Francisco experiences Mediterranean conditions. Summers are notably different: Hong Kong averages 29°C compared to 17°C in San Francisco. When it's noon in Hong Kong, it's midnight in San Francisco — a 16-hour time difference.
Size Ratio
San Francisco fits inside Hong Kong ~9 times
Time Difference
16 hours apart
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).
San Francisco covers 121 km². Cities with a similar urban footprint include Vancouver (115 km²), Paris (105 km²), Miami (143 km²), Barcelona (101 km²), or Lisbon (100 km²).
The straight-line distance from Hong Kong to San Francisco is 11,096 km (6,895 miles), with an estimated flight time of ~13h 33m.
Want to explore more? Compare city sizes for any two cities worldwide, or share your location live with friends.