The map above shows Puerto Rico and Japan side by side at exactly the same scale, using equal-area projections, so their true relative sizes are preserved.
Puerto Rico vs Japan Geography
Land area: Puerto Rico has a land area of 3,424 square miles (8,868 km²), while Japan has 140,752 square miles (364,546 km²). Japan's land area is 41.1 times larger than Puerto Rico's.
Total area: Puerto Rico: 3,515 square miles (9,104 km²) vs Japan: 145,937 square miles (377,975 km²), including inland and coastal water. Japan's total area is 41.5 times larger than Puerto Rico's.
Length: Puerto Rico is 67 miles (107 km) long from north to south; Japan is 1,557 miles (2,505 km). Japan's north-south length is 23.2 times longer than Puerto Rico's.
Width: Puerto Rico spans 174 miles (279 km) east to west; Japan spans 1,568 miles (2,524 km). Japan's east-west width is 9.0 times (801%) wider than Puerto Rico's.
Highest point: Puerto Rico's highest point is Cerro de Punta at 4,390 feet (1,338 m); Japan's is Mount Fuji at 12,388 feet (3,776 m). Mount Fuji is 7,998 feet higher than Cerro de Punta.
Lowest point: Puerto Rico's lowest point is Atlantic Ocean at 0 feet; Japan's is Hachirogata at -13 feet. Japan's lowest point is 13 feet lower.
Puerto Rico vs Japan Population and History
Population: Puerto Rico has a population of 3,285,874 (2020), while Japan has 122,680,000 (2026). Japan's population is 37.3 times larger than Puerto Rico's.
Population density: Puerto Rico: 959.7 people per square mile vs Japan: 871.6. Puerto Rico's population density is 1.1 times (10%) higher than Japan's.
Biggest city: Puerto Rico's biggest city is San Juan with 342,259 people; Japan's is Tokyo with 13,515,271. Tokyo's population is 39.5 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 Japan's Tokyo (33,412,512). Tokyo's population is 15.0 times larger than San Juan metro area's.
History: Puerto Rico: A US territory since 1898; a commonwealth since 1952. Japan: An independent state for over two millennia; the current constitution dates from 1947. In its current form, Japan is the older of the two by 1,238 years.
Puerto Rico vs Japan Economy
GDP: Puerto Rico's GDP is $129.0 billion (2025) vs Japan's $4,435.2 billion. Japan's economic output is 34.4 times larger than Puerto Rico's.
GDP per capita: Puerto Rico: $40,650 per person vs Japan: $35,951. Puerto Rico's GDP per capita is 1.1 times (13%) higher than Japan's.
Official Websites
Puerto Rico official website · Japan official website
More Size Comparisons
All Puerto Rico size comparisons · All Japan 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.