Houston
1,725 km²
San Diego
964 km²
United States
United States
Area Comparison
Houston is 1.8x larger than San Diego
Population Comparison
Houston has 1.7x more people than San Diego
In terms of area, Houston is 1.8x the size of San Diego. Houston spans 1,725 km² (666 mi²) while San Diego covers 964 km² (372 mi²) — a difference of 761 km².
To put Houston's size in perspective, its area of 1,725 km² is roughly the same size as London. Meanwhile, San Diego at 964 km² is roughly the same size as Berlin.
Houston's footprint is roughly about 242,000 American football fields, 29 times the area of Manhattan, or 16 times the area of Paris — pick whichever unit feels intuitive. San Diego works out to about 135,000 American football fields, 16 times the area of Manhattan, or 9 times the area of Paris.
Houston is the most populous city in the U.S. state of Texas and the Southern United States. It is the fourth-most populous city in the United States, with a population of 2.3 million at the 2020 census. The Greater Houston metropolitan area, at 7.8 million residents, is the fifth-most populous metropolitan area in the nation and second-most populous in Texas. Located in Southeast Texas near Galveston Bay and the Gulf of Mexico, Houston is the county seat of Harris County.
Known as "Space City", Houston covers 1,725 km² with a population of 2.3 million. The city was established in 1836. Houston is known for NASA Johnson Space Center, Space Center Houston, Houston Astros, among other attractions.
Houston is the fourth-most populous US city with 2.3 million residents at the 2020 census, leading the entire South.
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.
Houston has a population density of 1,333 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.
Houston covers 1,725 km². Cities with a similar urban footprint include Riyadh (1,798 km²), Johannesburg (1,644 km²), Bogotá (1,578 km²), London (1,572 km²), or Bangkok (1,569 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 Houston to San Diego is 2,095 km (1,301 miles), with an estimated flight time of ~2h 58m.
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