The map above shows Montana and Japan side by side at exactly the same scale, using equal-area projections, so their true relative sizes are preserved.
Montana vs Japan Geography
Land area: Montana has a land area of 145,550 square miles (376,973 km²), while Japan has 140,752 square miles (364,546 km²). Montana and Japan have about the same land area.
Total area: Montana: 147,043 square miles (380,840 km²) vs Japan: 145,937 square miles (377,975 km²), including inland and coastal water. Montana and Japan have about the same total area.
Length: Montana is 319 miles (514 km) long from north to south; Japan is 1,557 miles (2,505 km). Japan's north-south length is 4.9 times (388%) longer than Montana's.
Width: Montana spans 607 miles (976 km) east to west; Japan spans 1,568 miles (2,524 km). Japan's east-west width is 2.6 times (158%) wider than Montana's.
Highest point: Montana's highest point is Granite Peak at 12,767 feet (3,891 m); Japan's is Mount Fuji at 12,388 feet (3,776 m). Granite Peak is 379 feet higher than Mount Fuji.
Lowest point: Montana's lowest point is Kootenai River at 1,805 feet; Japan's is Hachirogata at -13 feet. Japan's lowest point is 1,818 feet lower.
Montana vs Japan Population and History
Population: Montana has a population of 1,137,233 (2024), while Japan has 122,680,000 (2026). Japan's population is 107.9 times larger than Montana's.
Population density: Montana: 7.8 people per square mile vs Japan: 871.6. Japan's population density is 111.7 times higher than Montana's.
Biggest city: Montana's biggest city is Billings with 121,483 people; Japan's is Tokyo with 13,515,271. Tokyo's population is 111.3 times larger than Billings'.
Largest metro area: Montana's largest metropolitan area is Billings, MT metro area (192,531 people) vs Japan's Tokyo (33,412,512). Tokyo's population is 173.5 times larger than Billings, MT metro area's.
History: Montana: Admitted to the Union on November 8, 1889, as the 41st state. 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 1,229 years.
Montana vs Japan Economy
GDP: Montana's GDP is $78.4 billion (2024) vs Japan's $4,435.2 billion. Japan's economic output is 56.6 times larger than Montana's.
GDP per capita: Montana: $68,975 per person vs Japan: $35,951. Montana's GDP per capita is 1.9 times (92%) higher than Japan's.
Average income: Montana: $69,240 vs Japan: $38,340 average income per person (per capita personal income). Montana's average income is 1.8 times (81%) higher than Japan's.
Official Websites
Montana official website · Japan official website
More Size Comparisons
All Montana 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.