Lagos
1,172 km²
San Antonio
1,209 km²
Nigeria
United States
Area Comparison
Lagos is 1.0x smaller than San Antonio
Population Comparison
Lagos has 10.8x more people than San Antonio
In terms of area, San Antonio is 1.0x the size of Lagos. San Antonio spans 1,209 km² (467 mi²) while Lagos covers 1,172 km² (453 mi²) — a difference of 37 km².
To put Lagos's size in perspective, its area of 1,172 km² is about 1.3x the size of Berlin. Meanwhile, San Antonio at 1,209 km² is about 1.3x smaller than London.
Picture Lagos another way: its area is large enough to fit about 164,000 American football fields, 20 times the area of Manhattan, or 11 times the area of Paris. San Antonio, by comparison, equals about 169,000 American football fields, 20 times the area of Manhattan, or 11 times the area of Paris.
Lagos, or Lagos City, is a large metropolitan port city in southwestern Nigeria. As of November 2025, the size of the city's population has been estimated to be between 17 and 21 million residents, making Lagos the largest city in Nigeria, the most populous urban area on the African continent, and one of the fastest-growing megacities in the world.
Known as "Lasgidi", Lagos covers 1,172 km² with a population of 15.4 million. The city was established in 1472. Lagos is known for Victoria Island, Lekki Conservation Centre, Nike Art Gallery, among other attractions. The city's main transit system is the Lagos Rail (Blue & Red Lines).
Lagos is the most populous urban area on the African continent, with an estimated 17 to 21 million residents as of 2025.
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.
Lagos has a population density of 13,131 people per km² — an extremely dense urban environment. San Antonio, with 1,183 people per km², is a relatively spread-out city. Lagos is dramatically more crowded, with 11.1x the population density.
Density Gap
Lagos is 11.1x more densely populated
History
Lagos is ~246 years older
Lagos covers 1,172 km². Cities with a similar urban footprint include San Antonio (1,209 km²), Rio de Janeiro (1,221 km²), Hong Kong (1,114 km²), Rome (1,285 km²), or Los Angeles (1,302 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 Lagos to San Antonio is 10,788 km (6,703 miles), with an estimated flight time of ~13h 12m.
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