The map above shows United States and United Kingdom side by side at exactly the same scale, using equal-area projections, so their true relative sizes are preserved.
United States vs United Kingdom Geography
Land area: United States has a land area of 3,533,467 square miles (9,151,637 km²), while United Kingdom has 93,410 square miles (241,930 km²). United States' land area is 37.8 times larger than United Kingdom's.
Total area: United States: 3,802,784 square miles (9,849,165 km²) vs United Kingdom: 94,058 square miles (243,610 km²), including inland and coastal water. United States' total area is 40.4 times larger than United Kingdom's.
Length: United States is 3,628 miles (5,839 km) long from north to south; United Kingdom is 747 miles (1,202 km). United States' north-south length is 4.9 times (386%) longer than United Kingdom's.
Width: United States spans 4,824 miles (7,763 km) east to west; United Kingdom spans 429 miles (690 km). United States' east-west width is 11.2 times wider than United Kingdom's.
Highest point: United States's highest point is Denali at 20,308 feet (6,190 m); United Kingdom's is Ben Nevis at 4,413 feet (1,345 m). Denali is 15,895 feet higher than Ben Nevis.
Lowest point: United States's lowest point is Death Valley at -279 feet; United Kingdom's is The Fens (Holme Fen) at -10 feet. United States's lowest point is 269 feet lower.
United States vs United Kingdom Population and History
Population: United States has a population of 340,110,988 (2024), while United Kingdom has 69,487,000 (2025). United States' population is 4.9 times (389%) larger than United Kingdom's.
Population density: United States: 96.3 people per square mile vs United Kingdom: 743.9. United Kingdom's population density is 7.7 times (672%) higher than United States'.
Biggest city: United States's biggest city is New York with 8,478,072 people; United Kingdom's is London with 8,825,001. New York and London have about the same population.
Largest metro area: United States's largest metropolitan area is New York-Newark-Jersey City, NY-NJ metro area (19,940,274 people) vs United Kingdom's London (10,416,420). New York-Newark-Jersey City, NY-NJ metro area's population is 1.9 times (91%) larger than London's.
History: United States: Declared independence on July 4, 1776. United Kingdom: Formed as the United Kingdom of Great Britain and Ireland on January 1, 1801; took its current form in 1922. In its current form, United States is the older of the two by 25 years.
United States vs United Kingdom Economy
GDP: United States's GDP is $30,769.7 billion (2025) vs United Kingdom's $4,002.6 billion. United States' economic output is 7.7 times (669%) larger than United Kingdom's.
GDP per capita: United States: $89,599 per person vs United Kingdom: $57,602. United States' GDP per capita is 1.6 times (56%) higher than United Kingdom's.
Official Websites
United States official website · United Kingdom official website
More Size Comparisons
All United States size comparisons · All United Kingdom size comparisons
Area, elevation and boundary figures come from official national statistics and US Census Bureau and Natural Earth boundary data; US state population, economic, county and tax figures come from the US Census Bureau, the Bureau of Economic Analysis and the Tax Foundation. Figures are rounded and for general reference.