The map above shows Iowa and Japan side by side at exactly the same scale, using equal-area projections, so their true relative sizes are preserved.
Iowa vs Japan Geography
Land area
- Iowa has a land area of 55,854 square miles (144,660 km²), while Japan has 140,752 square miles (364,546 km²).
- Japan's land area is 2.5 times (152%) larger than Iowa's.
Total area
- Iowa: 56,273 square miles (145,746 km²) vs Japan: 145,937 square miles (377,975 km²), including inland and coastal water.
- Japan's total area is 2.6 times (159%) larger than Iowa's.
Length
- Iowa is 216 miles (347 km) long from north to south; Japan is 1,557 miles (2,505 km).
- Japan's north-south length is 7.2 times (621%) longer than Iowa's.
Width
- Iowa spans 335 miles (539 km) east to west; Japan spans 1,568 miles (2,524 km).
- Japan's east-west width is 4.7 times (368%) wider than Iowa's.
Highest point
- Iowa's highest point is Hawkeye Point at 1,669 feet (509 m); Japan's is Mount Fuji at 12,388 feet (3,776 m).
- Mount Fuji is 10,719 feet higher than Hawkeye Point.
Lowest point
- Iowa's lowest point is Mississippi River at 480 feet; Japan's is Hachirogata at -13 feet.
- Japan's lowest point is 493 feet lower.
Iowa vs Japan Population and History
Population
- Iowa has a population of 3,241,488 (2024), while Japan has 122,680,000 (2026).
- Japan's population is 37.8 times larger than Iowa's.
Population density
- Iowa: 58.0 people per square mile vs Japan: 871.6.
- Japan's population density is 15.0 times higher than Iowa's.
Biggest city
- Iowa's biggest city is Des Moines with 213,096 people; Japan's is Tokyo with 13,515,271.
- Tokyo's population is 63.4 times larger than Des Moines'.
Largest metro area
- Iowa's largest metropolitan area is Omaha, NE-IA metro area (1,001,010 people) vs Japan's Tokyo (33,412,512).
- Tokyo's population is 33.4 times larger than Omaha, NE-IA metro area's.
History
- Iowa: Admitted to the Union on December 28, 1846, as the 29th 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 1,186 years.
Iowa vs Japan Economy
GDP
- Iowa's GDP is $265.8 billion (2024) vs Japan's $4,435.2 billion.
- Japan's economic output is 16.7 times larger than Iowa's.
GDP per capita
- Iowa: $81,998 per person vs Japan: $35,951.
- Iowa's GDP per capita is 2.3 times (128%) higher than Japan's.
Average income
- Iowa: $65,225 vs Japan: $38,340 average income per person (per capita personal income).
- Iowa's average income is 1.7 times (70%) higher than Japan's.
Official Websites
Iowa official website · Japan official website
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More Size Comparisons
All Iowa 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.