The map above shows Kansas and Japan side by side at exactly the same scale, using equal-area projections, so their true relative sizes are preserved.
Kansas vs Japan Geography
Land area: Kansas has a land area of 81,759 square miles (211,754 km²), while Japan has 140,752 square miles (364,546 km²). Japan's land area is 1.7 times (72%) larger than Kansas'.
Total area: Kansas: 82,278 square miles (213,100 km²) vs Japan: 145,937 square miles (377,975 km²), including inland and coastal water. Japan's total area is 1.8 times (77%) larger than Kansas'.
Length: Kansas is 207 miles (334 km) long from north to south; Japan is 1,557 miles (2,505 km). Japan's north-south length is 7.5 times (652%) longer than Kansas'.
Width: Kansas spans 401 miles (645 km) east to west; Japan spans 1,568 miles (2,524 km). Japan's east-west width is 3.9 times (291%) wider than Kansas'.
Highest point: Kansas's highest point is Mount Sunflower at 4,040 feet (1,231 m); Japan's is Mount Fuji at 12,388 feet (3,776 m). Mount Fuji is 8,348 feet higher than Mount Sunflower.
Lowest point: Kansas's lowest point is Verdigris River at 679 feet; Japan's is Hachirogata at -13 feet. Japan's lowest point is 692 feet lower.
Kansas vs Japan Population and History
Population: Kansas has a population of 2,970,606 (2024), while Japan has 122,680,000 (2026). Japan's population is 41.3 times larger than Kansas'.
Population density: Kansas: 36.3 people per square mile vs Japan: 871.6. Japan's population density is 24.0 times higher than Kansas'.
Biggest city: Kansas's biggest city is Wichita with 400,991 people; Japan's is Tokyo with 13,515,271. Tokyo's population is 33.7 times larger than Wichita's.
Largest metro area: Kansas's largest metropolitan area is Kansas City, MO-KS metro area (2,253,579 people) vs Japan's Tokyo (33,412,512). Tokyo's population is 14.8 times larger than Kansas City, MO-KS metro area's.
History: Kansas: Admitted to the Union on January 29, 1861, as the 34th 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 1,201 years.
Kansas vs Japan Economy
GDP: Kansas's GDP is $230.5 billion (2024) vs Japan's $4,435.2 billion. Japan's economic output is 19.2 times larger than Kansas'.
GDP per capita: Kansas: $77,601 per person vs Japan: $35,951. Kansas' GDP per capita is 2.2 times (116%) higher than Japan's.
Average income: Kansas: $65,856 vs Japan: $38,340 average income per person (per capita personal income). Kansas' average income is 1.7 times (72%) higher than Japan's.
Official Websites
Kansas official website · Japan official website
More Size Comparisons
All Kansas 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.