The map above shows Northern Mariana Islands and Japan side by side at exactly the same scale, using equal-area projections, so their true relative sizes are preserved.
Northern Mariana Islands vs Japan Geography
Land area: Northern Mariana Islands has a land area of 179 square miles (464 km²), while Japan has 140,752 square miles (364,546 km²). Japan's land area is 785.7 times larger than Northern Mariana Islands'.
Total area: Northern Mariana Islands: 179 square miles (464 km²) vs Japan: 145,937 square miles (377,975 km²), including inland and coastal water. Japan's total area is 814.6 times larger than Northern Mariana Islands'.
Length: Northern Mariana Islands is 326 miles (524 km) long from north to south; Japan is 1,557 miles (2,505 km). Japan's north-south length is 4.8 times (378%) longer than Northern Mariana Islands'.
Width: Northern Mariana Islands spans 278 miles (448 km) east to west; Japan spans 1,568 miles (2,524 km). Japan's east-west width is 5.6 times (464%) wider than Northern Mariana Islands'.
Highest point: Northern Mariana Islands's highest point is Agrihan at 3,166 feet (965 m); Japan's is Mount Fuji at 12,388 feet (3,776 m). Mount Fuji is 9,222 feet higher than Agrihan.
Lowest point: Northern Mariana Islands's lowest point is Pacific Ocean at 0 feet; Japan's is Hachirogata at -13 feet. Japan's lowest point is 13 feet lower.
Northern Mariana Islands vs Japan Population and History
Population: Northern Mariana Islands has a population of 47,329 (2020), while Japan has 122,680,000 (2026). Japan's population is 2,592.1 times larger than Northern Mariana Islands'.
Population density: Northern Mariana Islands: 264.4 people per square mile vs Japan: 871.6. Japan's population density is 3.3 times (230%) higher than Northern Mariana Islands'.
History: Northern Mariana Islands: A US commonwealth since 1978. 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 1,318 years.
Official Websites
Northern Mariana Islands official website · Japan official website
More Size Comparisons
All Northern Mariana Islands 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.