Houston
1,725 km²
Lisbon
100 km²
United States
Portugal
Area Comparison
Houston is 17.3x larger than Lisbon
Population Comparison
Houston has 4.2x more people than Lisbon
Yes — Houston is 17.3x larger than Lisbon by area. Houston spans 1,725 km² (666 mi²) while Lisbon covers 100 km² (39 mi²) — a difference of 1,625 km². You could fit Lisbon inside Houston approximately 17 times.
To put Houston's size in perspective, its area of 1,725 km² is roughly the same size as London. Meanwhile, Lisbon at 100 km² is roughly the same size as Paris (city proper).
In more relatable units, Houston's 1,725 km² is about 242,000 American football fields, 29 times the area of Manhattan, or 16 times the area of Paris. Lisbon works out to about 14,000 American football fields, 50 times the area of Monaco, or 29 times the area of Central Park.
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.
Lisbon is the capital and most populous city of Portugal, with an estimated population of 575,739 as of 2024, within its administrative limits and 3,028,000 within the metropolis, as of 2025. Lisbon is mainland Europe's westernmost capital city, and the only one along the Atlantic coast, the others being on islands. The city lies in the western portion of the Iberian Peninsula, on the northern shore of the River Tagus.
Nicknamed "City of Seven Hills", Lisbon has an area of 100 km² and is home to 0.6 million people. The city dates back to 1200 BC. Visitors come for Belém Tower, Jerónimos Monastery, Tram 28, and much more. Getting around is easy with the Lisbon Metro.
Lisbon is mainland Europe's westernmost capital city and the only European capital along the Atlantic coast.
Houston has a population density of 1,333 people per km² — a relatively spread-out city. Lisbon, with 5,500 people per km², is a densely populated city. Lisbon is dramatically more crowded, with 4.1x the population density.
Size Ratio
Lisbon fits inside Houston ~17 times
Density Gap
Lisbon is 4.1x more densely populated
History
Lisbon is ~3,036 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).
Lisbon covers 100 km². Cities with a similar urban footprint include Barcelona (101 km²), Paris (105 km²), Copenhagen (91 km²), Zurich (88 km²), or Vancouver (115 km²).
The straight-line distance from Houston to Lisbon is 7,695 km (4,781 miles), with an estimated flight time of ~9h 33m.
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