Houston
1,725 km²
San Antonio
1,209 km²
United States
United States
Area Comparison
Houston is 1.4x larger than San Antonio
Population Comparison
Houston has 1.6x more people than San Antonio
In terms of area, Houston is 1.4x the size of San Antonio. Houston spans 1,725 km² (666 mi²) while San Antonio covers 1,209 km² (467 mi²) — a difference of 516 km².
To put Houston's size in perspective, its area of 1,725 km² is roughly the same size as London. Meanwhile, San Antonio at 1,209 km² is about 1.3x smaller than London.
Picture Houston another way: its area is large enough to fit about 242,000 American football fields, 29 times the area of Manhattan, or 16 times the area of Paris. San Antonio works out to about 169,000 American football fields, 20 times the area of Manhattan, or 11 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 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.
Nicknamed "Alamo City", San Antonio has an area of 1,209 km² and is home to 1.4 million people. It was established in 1718. Visitors come for The Alamo, San Antonio River Walk, Tower of the Americas, and much more.
San Antonio is the seventh-most populous city in the United States and second-most populous in Texas, with 1.43 million residents.
Houston has a population density of 1,333 people per km² — a relatively spread-out city. San Antonio, with 1,183 people per km², is a relatively spread-out city. Both cities have comparable density, though Houston is slightly more compact.
History
San Antonio is ~118 years older
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 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).
The straight-line distance from Houston to San Antonio is 305 km (189 miles), with an estimated flight time of ~52m.
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