The map above shows Hawaii and Iowa side by side at exactly the same scale, using equal-area projections, so their true relative sizes are preserved.
Hawaii vs Iowa Geography
Land area: Hawaii has a land area of 6,423 square miles (16,634 km²), while Iowa has 55,854 square miles (144,660 km²). Iowa's land area is 8.7 times (770%) larger than Hawaii's.
Total area: Hawaii: 10,970 square miles (28,412 km²) vs Iowa: 56,273 square miles (145,746 km²), including inland and coastal water. Iowa's total area is 5.1 times (413%) larger than Hawaii's.
Length: Hawaii is 333 miles (536 km) long from north to south; Iowa is 216 miles (347 km). Hawaii's north-south length is 1.5 times (54%) longer than Iowa's.
Width: Hawaii spans 386 miles (621 km) east to west; Iowa spans 335 miles (539 km). Hawaii's east-west width is 1.2 times (15%) wider than Iowa's.
Highest point: Hawaii's highest point is Mauna Kea at 13,795 feet (4,205 m); Iowa's is Hawkeye Point at 1,669 feet (509 m). Mauna Kea is 12,126 feet higher than Hawkeye Point.
Lowest point: Hawaii's lowest point is Pacific Ocean at 0 feet; Iowa's is Mississippi River at 480 feet. Hawaii's lowest point is 480 feet lower.
Hawaii vs Iowa Population and History
Population: Hawaii has a population of 1,446,146 (2024), while Iowa has 3,241,488 (2024). Iowa's population is 2.2 times (124%) larger than Hawaii's.
Population density: Hawaii: 225.2 people per square mile vs Iowa: 58.0. Hawaii's population density is 3.9 times (288%) higher than Iowa's.
Biggest city: Hawaii's biggest city is Honolulu with 344,967 people; Iowa's is Des Moines with 213,096. Honolulu's population is 1.6 times (62%) larger than Des Moines'.
Largest metro area: Hawaii's largest metropolitan area is Urban Honolulu, HI metro area (998,747 people) vs Iowa's Omaha, NE-IA metro area (1,001,010). Urban Honolulu, HI metro area and Omaha, NE-IA metro area have about the same population.
History: Hawaii: Admitted to the Union on August 21, 1959, as the 50th state. Iowa: Admitted to the Union on December 28, 1846, as the 29th state. In its current form, Iowa is the older of the two by 113 years.
Hawaii vs Iowa Economy
GDP: Hawaii's GDP is $117.6 billion (2024) vs Iowa's $265.8 billion. Iowa's economic output is 2.3 times (126%) larger than Hawaii's.
GDP per capita: Hawaii: $81,339 per person vs Iowa: $81,998. Hawaii and Iowa have about the same GDP per capita.
Average income: Hawaii: $71,019 vs Iowa: $65,225 average income per person (per capita personal income). Hawaii's average income is 1.1 times (9%) higher than Iowa's.
Hawaii vs Iowa Counties
Number of counties: Hawaii has 5 counties, while Iowa has 99. Iowa's county count is 19.8 times higher than Hawaii's.
Biggest county by area: Hawaii's largest county is Hawaii County at 4,028 square miles; Iowa's is Kossuth County at 973 square miles. Hawaii County's land area is 4.1 times (314%) larger than Kossuth County's.
Smallest county by area: Hawaii: Kalawao County (12 sq mi) vs Iowa: Dickinson County (381 sq mi). Dickinson County's land area is 31.7 times larger than Kalawao County's.
Most populous county: Hawaii: Honolulu County (998,747 people) vs Iowa: Polk County (516,185 people). Honolulu County's population is 1.9 times (93%) larger than Polk County's.
Least populous county: Hawaii: Kalawao County (81 people) vs Iowa: Adams County (3,606 people). Adams County's population is 44.5 times larger than Kalawao County's.
Richest county: Hawaii: Honolulu County ($74,681 per capita income) vs Iowa: Mitchell County ($98,211). Mitchell County's income is 1.3 times (32%) richer than Honolulu County's.
Poorest county: Hawaii: Hawaii County ($57,694 per capita income) vs Iowa: Decatur County ($46,134). Hawaii County's income is 1.3 times (25%) richer than Decatur County's.
Hawaii vs Iowa Taxes
State income tax: Hawaii has a top income tax rate of 11%, while Iowa has a top income tax rate of 3.8%. Hawaii's top rate is 7.2 percentage points higher.
Property tax: Hawaii: 0.27% effective rate vs Iowa: 1.29% of home value per year. Iowa's rate is 1.02 percentage points higher.
Sales tax: Hawaii: 4.5% combined state and average local rate vs Iowa: 6.94%. Iowa's combined rate is 2.44 percentage points higher.
Official Websites
Hawaii official website · Iowa official website
More Size Comparisons
All Hawaii size comparisons · All Iowa 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.