Houston
1,725 km²
Rome
1,285 km²
United States
Italy
Area Comparison
Houston is 1.3x larger than Rome
Population Comparison
Houston has 1.2x fewer people than Rome
Houston is significantly larger, covering 1.3 times the area of Rome. Houston spans 1,725 km² (666 mi²) while Rome covers 1,285 km² (496 mi²) — a difference of 440 km².
To put Houston's size in perspective, its area of 1,725 km² is roughly the same size as London. Meanwhile, Rome at 1,285 km² is about 1.2x 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. Rome works out to about 180,000 American football fields, 22 times the area of Manhattan, or 12 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.
Rome is the capital city and most populated comune (municipality) of Italy. It is also the administrative centre of the Lazio region and of the Metropolitan City of Rome. A special comune named Roma Capitale with a population of 2.7 million in an area of 1,287.36 km2 (497.1 mi2), Rome is the third most populous city in the European Union by population within city limits. The Metropolitan City of Rome Capital, with a population of 4.2 million, is the most populous metropolitan city in Italy.
Also known as "The Eternal City", Rome has an area of 1,285 km² and is home to 2.9 million people. It was founded around 753 BC. Visitors come for Colosseum, Vatican City, Trevi Fountain, and much more. Getting around is easy with the Rome Metro.
Rome's special comune Roma Capitale spans 1,287 km2, making it the third most populous city in the EU within city limits
Houston has a population density of 1,333 people per km² — a relatively spread-out city. Rome, with 2,233 people per km², is a moderately dense city. Rome is noticeably denser, packing 1.7 times more people per square kilometer.
Density Gap
Rome is 1.7x more densely populated
History
Rome is ~2,589 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).
Rome covers 1,285 km². Cities with a similar urban footprint include Los Angeles (1,302 km²), Phoenix (1,341 km²), Rio de Janeiro (1,221 km²), San Antonio (1,209 km²), or Lagos (1,172 km²).
The straight-line distance from Houston to Rome is 9,156 km (5,689 miles), with an estimated flight time of ~11h 16m.
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