The map above shows Puerto Rico and United Kingdom side by side at exactly the same scale, using equal-area projections, so their true relative sizes are preserved.
Puerto Rico vs United Kingdom Geography
Land area: Puerto Rico has a land area of 3,424 square miles (8,868 km²), while United Kingdom has 93,410 square miles (241,930 km²). United Kingdom's land area is 27.3 times larger than Puerto Rico's.
Total area: Puerto Rico: 3,515 square miles (9,104 km²) vs United Kingdom: 94,058 square miles (243,610 km²), including inland and coastal water. United Kingdom's total area is 26.8 times larger than Puerto Rico's.
Length: Puerto Rico is 67 miles (107 km) long from north to south; United Kingdom is 747 miles (1,202 km). United Kingdom's north-south length is 11.1 times longer than Puerto Rico's.
Width: Puerto Rico spans 174 miles (279 km) east to west; United Kingdom spans 429 miles (690 km). United Kingdom's east-west width is 2.5 times (147%) wider than Puerto Rico's.
Highest point: Puerto Rico's highest point is Cerro de Punta at 4,390 feet (1,338 m); United Kingdom's is Ben Nevis at 4,413 feet (1,345 m). Ben Nevis is 23 feet higher than Cerro de Punta.
Lowest point: Puerto Rico's lowest point is Atlantic Ocean at 0 feet; United Kingdom's is The Fens (Holme Fen) at -10 feet. United Kingdom's lowest point is 10 feet lower.
Puerto Rico vs United Kingdom Population and History
Population: Puerto Rico has a population of 3,285,874 (2020), while United Kingdom has 69,487,000 (2025). United Kingdom's population is 21.1 times larger than Puerto Rico's.
Population density: Puerto Rico: 959.7 people per square mile vs United Kingdom: 743.9. Puerto Rico's population density is 1.3 times (29%) higher than United Kingdom's.
Biggest city: Puerto Rico's biggest city is San Juan with 342,259 people; United Kingdom's is London with 8,825,001. London's population is 25.8 times larger than San Juan's.
Largest metro area: Puerto Rico's largest metropolitan area is San Juan metro area (2,233,177 people) vs United Kingdom's London (10,416,420). London's population is 4.7 times (366%) larger than San Juan metro area's.
History: Puerto Rico: A US territory since 1898; a commonwealth since 1952. 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 Kingdom is the older of the two by 97 years.
Puerto Rico vs United Kingdom Economy
GDP: Puerto Rico's GDP is $129.0 billion (2025) vs United Kingdom's $4,002.6 billion. United Kingdom's economic output is 31.0 times larger than Puerto Rico's.
GDP per capita: Puerto Rico: $40,650 per person vs United Kingdom: $57,602. United Kingdom's GDP per capita is 1.4 times (42%) higher than Puerto Rico's.
Official Websites
Puerto Rico official website · United Kingdom official website
More Size Comparisons
All Puerto Rico 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.