Cairo
3,085 km²
San Diego
964 km²
Egypt
United States
Area Comparison
Cairo is 3.2x larger than San Diego
Population Comparison
Cairo has 7.3x more people than San Diego
Cairo is significantly larger, covering 3.2 times the area of San Diego. Cairo spans 3,085 km² (1,191 mi²) while San Diego covers 964 km² (372 mi²) — a difference of 2,121 km². You could fit San Diego inside Cairo approximately 3 times.
To put Cairo's size in perspective, its area of 3,085 km² is about 1.2x the size of Luxembourg. Meanwhile, San Diego at 964 km² is roughly the same size as Berlin.
In more relatable units, Cairo's 3,085 km² is about 432,000 American football fields, 52 times the area of Manhattan, or 29 times the area of Paris. For San Diego, that's about 135,000 American football fields, 16 times the area of Manhattan, or 9 times the area of Paris.
Cairo is the capital and largest city of Egypt and the Cairo Governorate. It is home to more than 9.8 million people. It is also part of the largest urban agglomeration in Africa, the Arab world, and the Middle East. The Greater Cairo metropolitan area is one of the largest in the world by population with over 22 million people. Areas of what would become Cairo were inhabited from pre-dynastic and early-dynastic ancient Egypt c.
Known as "The City of a Thousand Minarets", Cairo covers 3,085 km² with a population of 10.1 million. The city was established in 969. Cairo is known for Pyramids of Giza, Great Sphinx, Egyptian Museum, among other attractions. The city's main transit system is the Cairo Metro.
Cairo is home to more than 9.8 million people and is part of the largest urban agglomeration in Africa and the Arab world.
San Diego is a city on the Pacific coast of Southern California, adjacent to the Mexico–United States border. It is the eighth-most populous city in the U.S. and second-most populous city in California with a population of over 1.4 million, while the San Diego metropolitan area with over 3.3 million residents is the 18th-largest metropolitan area in the country. San Diego is the county seat of San Diego County.
Nicknamed "America's Finest City", San Diego has an area of 964 km² and is home to 1.4 million people. The city dates back to 1769. Visitors come for San Diego Zoo, Balboa Park, Coronado Beach, and much more.
San Diego sits directly on the Mexico-United States border, making it California's southwesternmost major city.
Cairo has a population density of 3,274 people per km² — a moderately dense city. San Diego, with 1,442 people per km², is a relatively spread-out city. Cairo is noticeably denser, packing 2.3 times more people per square kilometer.
Size Ratio
San Diego fits inside Cairo ~3 times
Density Gap
Cairo is 2.3x more densely populated
History
Cairo is ~800 years older
Cairo covers 3,085 km². Cities with a similar urban footprint include Hanoi (3,359 km²), Karachi (3,527 km²), Lima (2,672 km²), Moscow (2,511 km²), or Cape Town (2,455 km²).
San Diego covers 964 km². Cities with a similar urban footprint include Abu Dhabi (972 km²), Dallas (997 km²), Berlin (892 km²), Santiago (838 km²), or Hong Kong (1,114 km²).
The straight-line distance from Cairo to San Diego is 12,284 km (7,633 miles), with an estimated flight time of ~14h 57m.
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