San Antonio
1,209 km²
Sydney
12,368 km²
United States
Australia
Area Comparison
San Antonio is 10.2x smaller than Sydney
Population Comparison
San Antonio has 3.7x fewer people than Sydney
Sydney is significantly larger, covering 10.2 times the area of San Antonio. Sydney spans 12,368 km² (4,775 mi²) while San Antonio covers 1,209 km² (467 mi²) — a difference of 11,159 km². You could fit San Antonio inside Sydney approximately 10 times.
To put San Antonio's size in perspective, its area of 1,209 km² is about 1.3x smaller than London. Meanwhile, Sydney at 12,368 km² is about 2.0x the size of Shanghai.
San Antonio's footprint is roughly about 169,000 American football fields, 20 times the area of Manhattan, or 11 times the area of Paris — pick whichever unit feels intuitive. For Sydney, that's about 1,700,000 American football fields, 120 times the area of Paris, or 100 times the area of San Francisco.
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.
Sydney is the capital city of the state of New South Wales, and is the most populous city in Australia. Located on Australia's east coast, the metropolis surrounds Sydney Harbour and extends about 80 kilometres (50 mi) from the Pacific Ocean in the east to the Blue Mountains in the west, and about 80 kilometres (50 mi) from Ku-ring-gai Chase National Park and the Hawkesbury River in the north and north-west, to the Royal National Park and Macarthur in the south and south-west.
Often called "Sydneysiders", Sydney has an area of 12,368 km² and is home to 5.3 million people. It was established in 1788. Visitors come for Sydney Opera House, Sydney Harbour Bridge, Bondi Beach, and much more. Getting around is easy with the Sydney Trains.
Sydney stretches roughly 80 km from the Pacific Ocean in the east to the Blue Mountains in the west.
San Antonio has a population density of 1,183 people per km² — a relatively spread-out city. Sydney, with 429 people per km², is a low-density, sprawling urban area. San Antonio is noticeably denser, packing 2.8 times more people per square kilometer.
Size Ratio
San Antonio fits inside Sydney ~10 times
Density Gap
San Antonio is 2.8x more densely populated
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).
Sydney covers 12,368 km². Cities with a similar urban footprint include Chengdu (14,378 km²), Xi'an (10,097 km²), Melbourne (9,993 km²), Brisbane (15,826 km²), or Beijing (16,411 km²).
The straight-line distance from San Antonio to Sydney is 13,526 km (8,405 miles), with an estimated flight time of ~16h 25m.
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