The map above shows Arizona and Iowa side by side at exactly the same scale, using equal-area projections, so their true relative sizes are preserved.
Arizona vs Iowa Geography
Land area: Arizona has a land area of 113,655 square miles (294,366 km²), while Iowa has 55,854 square miles (144,660 km²). Arizona's land area is 2.0 times (103%) larger than Iowa's.
Total area: Arizona: 113,985 square miles (295,220 km²) vs Iowa: 56,273 square miles (145,746 km²), including inland and coastal water. Arizona's total area is 2.0 times (103%) larger than Iowa's.
Length: Arizona is 429 miles (690 km) long from north to south; Iowa is 216 miles (347 km). Arizona's north-south length is 2.0 times (99%) longer than Iowa's.
Width: Arizona spans 452 miles (727 km) east to west; Iowa spans 335 miles (539 km). Arizona's east-west width is 1.3 times (35%) wider than Iowa's.
Highest point: Arizona's highest point is Humphreys Peak at 12,620 feet (3,847 m); Iowa's is Hawkeye Point at 1,669 feet (509 m). Humphreys Peak is 10,951 feet higher than Hawkeye Point.
Lowest point: Arizona's lowest point is Colorado River at 71 feet; Iowa's is Mississippi River at 480 feet. Arizona's lowest point is 409 feet lower.
Arizona vs Iowa Population and History
Population: Arizona has a population of 7,582,384 (2024), while Iowa has 3,241,488 (2024). Arizona's population is 2.3 times (134%) larger than Iowa's.
Population density: Arizona: 66.7 people per square mile vs Iowa: 58.0. Arizona's population density is 1.2 times (15%) higher than Iowa's.
Biggest city: Arizona's biggest city is Phoenix with 1,673,164 people; Iowa's is Des Moines with 213,096. Phoenix's population is 7.9 times (685%) larger than Des Moines'.
Largest metro area: Arizona's largest metropolitan area is Phoenix-Mesa-Chandler, AZ metro area (5,186,958 people) vs Iowa's Omaha, NE-IA metro area (1,001,010). Phoenix-Mesa-Chandler, AZ metro area's population is 5.2 times (418%) larger than Omaha, NE-IA metro area's.
History: Arizona: Admitted to the Union on February 14, 1912, as the 48th 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 66 years.
Arizona vs Iowa Economy
GDP: Arizona's GDP is $570.1 billion (2024) vs Iowa's $265.8 billion. Arizona's economic output is 2.1 times (114%) larger than Iowa's.
GDP per capita: Arizona: $75,186 per person vs Iowa: $81,998. Iowa's GDP per capita is 1.1 times (9%) higher than Arizona's.
Average income: Arizona: $65,798 vs Iowa: $65,225 average income per person (per capita personal income). Arizona and Iowa have about the same average income.
Arizona vs Iowa Counties
Number of counties: Arizona has 15 counties, while Iowa has 99. Iowa's county count is 6.6 times (560%) higher than Arizona's.
Biggest county by area: Arizona's largest county is Coconino County at 18,616 square miles; Iowa's is Kossuth County at 973 square miles. Coconino County's land area is 19.1 times larger than Kossuth County's.
Smallest county by area: Arizona: Santa Cruz County (1,236 sq mi) vs Iowa: Dickinson County (381 sq mi). Santa Cruz County's land area is 3.2 times (225%) larger than Dickinson County's.
Most populous county: Arizona: Maricopa County (4,673,096 people) vs Iowa: Polk County (516,185 people). Maricopa County's population is 9.1 times (805%) larger than Polk County's.
Least populous county: Arizona: Greenlee County (9,410 people) vs Iowa: Adams County (3,606 people). Greenlee County's population is 2.6 times (161%) larger than Adams County's.
Richest county: Arizona: Maricopa County ($72,176 per capita income) vs Iowa: Mitchell County ($98,211). Mitchell County's income is 1.4 times (36%) richer than Maricopa County's.
Poorest county: Arizona: Graham County ($44,164 per capita income) vs Iowa: Decatur County ($46,134). Graham County and Decatur County have about the same income.
Arizona vs Iowa Taxes
State income tax: Arizona has a top income tax rate of 2.5%, while Iowa has a top income tax rate of 3.8%. Iowa's top rate is 1.3 percentage points higher.
Property tax: Arizona: 0.43% effective rate vs Iowa: 1.29% of home value per year. Iowa's rate is 0.86 percentage points higher.
Sales tax: Arizona: 8.54% combined state and average local rate vs Iowa: 6.94%. Arizona's combined rate is 1.6 percentage points higher.
Official Websites
Arizona official website · Iowa official website
More Size Comparisons
All Arizona 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.