The map above shows Iowa and Guam side by side at exactly the same scale, using equal-area projections, so their true relative sizes are preserved.
Iowa vs Guam Geography
Land area: Iowa has a land area of 55,854 square miles (144,660 km²), while Guam has 210 square miles (544 km²). Iowa's land area is 265.9 times larger than Guam's.
Total area: Iowa: 56,273 square miles (145,746 km²) vs Guam: 210 square miles (544 km²), including inland and coastal water. Iowa's total area is 267.9 times larger than Guam's.
Length: Iowa is 216 miles (347 km) long from north to south; Guam is 27 miles (43 km). Iowa's north-south length is 8.0 times (700%) longer than Guam's.
Width: Iowa spans 335 miles (539 km) east to west; Guam spans 22 miles (35 km). Iowa's east-west width is 15.2 times wider than Guam's.
Highest point: Iowa's highest point is Hawkeye Point at 1,669 feet (509 m); Guam's is Mount Lamlam at 1,332 feet (406 m). Hawkeye Point is 337 feet higher than Mount Lamlam.
Lowest point: Iowa's lowest point is Mississippi River at 480 feet; Guam's is Pacific Ocean at 0 feet. Guam's lowest point is 480 feet lower.
Iowa vs Guam Population and History
Population: Iowa has a population of 3,241,488 (2024), while Guam has 153,836 (2020). Iowa's population is 21.1 times larger than Guam's.
Population density: Iowa: 58.0 people per square mile vs Guam: 732.6. Guam's population density is 12.6 times higher than Iowa's.
History: Iowa: Admitted to the Union on December 28, 1846, as the 29th state. Guam: A US territory since 1898. In its current form, Iowa is the older of the two by 52 years.
Official Websites
Iowa official website · Guam official website
More Size Comparisons
All Iowa size comparisons · All Guam 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.