San Antonio
1,209 km²
San Diego
964 km²
United States
United States
Area Comparison
San Antonio is 1.3x larger than San Diego
Population Comparison
San Antonio has 1.0x more people than San Diego
San Antonio is significantly larger, covering 1.3 times the area of San Diego. San Antonio spans 1,209 km² (467 mi²) while San Diego covers 964 km² (372 mi²) — a difference of 245 km².
To put San Antonio's size in perspective, its area of 1,209 km² is about 1.3x smaller than London. Meanwhile, San Diego at 964 km² is roughly the same size as Berlin.
In more relatable units, San Antonio's 1,209 km² is about 169,000 American football fields, 20 times the area of Manhattan, or 11 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.
San Antonio is a city in the U.S. state of Texas. It is the seventh-most populous city in the United States, the second-most populous city in Texas, and the second-most populous city in the Southern U.S., with a population of 1.43 million at the 2020 census. The Greater San Antonio metropolitan area, with an estimated 2.76 million residents, ranks as the third-largest metropolitan area in Texas and the 24th-largest in the nation. It is the county seat of Bexar County.
Known as "Alamo City", San Antonio covers 1,209 km² with a population of 1.4 million. The city was established in 1718. San Antonio is known for The Alamo, San Antonio River Walk, Tower of the Americas, among other attractions.
San Antonio is the seventh-most populous city in the United States and second-most populous in Texas, with 1.43 million residents.
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.
Often called "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.
San Antonio has a population density of 1,183 people per km² — a relatively spread-out city. San Diego, with 1,442 people per km², is a relatively spread-out city. Both cities have comparable density, though San Diego is slightly more compact.
San Antonio covers 1,209 km². Cities with a similar urban footprint include Rio de Janeiro (1,221 km²), Lagos (1,172 km²), Rome (1,285 km²), Los Angeles (1,302 km²), or Hong Kong (1,114 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 San Antonio to San Diego is 1,813 km (1,126 miles), with an estimated flight time of ~2h 38m.
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