Houston
1,725 km²
Karachi
3,527 km²
United States
Pakistan
Area Comparison
Houston is 2.0x smaller than Karachi
Population Comparison
Houston has 6.5x fewer people than Karachi
Karachi is significantly larger, covering 2.0 times the area of Houston. Karachi spans 3,527 km² (1,362 mi²) while Houston covers 1,725 km² (666 mi²) — a difference of 1,802 km². You could fit Houston inside Karachi approximately 2 times.
To put Houston's size in perspective, its area of 1,725 km² is roughly the same size as London. Meanwhile, Karachi at 3,527 km² is about 1.1x smaller than Rhode Island.
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. For Karachi, that's about 494,000 American football fields, 60 times the area of Manhattan, or 33 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.
Karachi is the capital city of the province of Sindh, Pakistan. It is the largest city in Pakistan and 12th largest in the world, with a population of over 20 million. It is situated at the southern tip of the country along the Arabian Sea coast and formerly served as the country's capital from 1947 to 1959. Ranked as a beta-global city, it is Pakistan's premier industrial and financial centre, with an estimated GDP of over $200 billion (PPP) as of 2021.
Nicknamed "City of Lights", Karachi has an area of 3,527 km² and is home to 14.9 million people. It was established in 1729. Visitors come for Port of Karachi, Mazar-e-Quaid mausoleum, Clifton Beach, and much more.
Karachi is Pakistan's largest city and the 12th largest in the world, with a population of over 20 million.
Houston has a population density of 1,333 people per km² — a relatively spread-out city. Karachi, with 4,227 people per km², is a moderately dense city. Karachi is dramatically more crowded, with 3.2x the population density.
Size Ratio
Houston fits inside Karachi ~2 times
Density Gap
Karachi is 3.2x more densely populated
History
Karachi is ~107 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).
Karachi covers 3,527 km². Cities with a similar urban footprint include Hanoi (3,359 km²), Cairo (3,085 km²), Dubai (4,114 km²), Lima (2,672 km²), or Moscow (2,511 km²).
The straight-line distance from Houston to Karachi is 13,657 km (8,486 miles), with an estimated flight time of ~16h 34m.
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