The map above shows District of Columbia and Guam side by side at exactly the same scale, using equal-area projections, so their true relative sizes are preserved.
District of Columbia vs Guam Geography
Land area: District of Columbia has a land area of 61 square miles (158 km²), while Guam has 210 square miles (544 km²). Guam's land area is 3.4 times (244%) larger than District of Columbia's.
Total area: District of Columbia: 68 square miles (177 km²) vs Guam: 210 square miles (544 km²), including inland and coastal water. Guam's total area is 3.1 times (207%) larger than District of Columbia's.
Length: District of Columbia is 13 miles (22 km) long from north to south; Guam is 27 miles (43 km). Guam's north-south length is 2.1 times (108%) longer than District of Columbia's.
Width: District of Columbia spans 12 miles (19 km) east to west; Guam spans 22 miles (35 km). Guam's east-west width is 1.8 times (83%) wider than District of Columbia's.
Highest point: District of Columbia's highest point is Fort Reno at 429 feet (131 m); Guam's is Mount Lamlam at 1,332 feet (406 m). Mount Lamlam is 903 feet higher than Fort Reno.
Lowest point: District of Columbia's lowest point is Potomac River at 0 feet; Guam's is Pacific Ocean at 0 feet. Both lowest points are at or near sea level.
District of Columbia vs Guam Population and History
Population: District of Columbia has a population of 702,250 (2024), while Guam has 153,836 (2020). District of Columbia's population is 4.6 times (356%) larger than Guam's.
Population density: District of Columbia: 11,493.5 people per square mile vs Guam: 732.6. District of Columbia's population density is 15.7 times higher than Guam's.
History: District of Columbia: The federal district, established by the Residence Act on July 16, 1790; not a state. Guam: A US territory since 1898. In its current form, District of Columbia is the older of the two by 108 years.
Official Websites
District of Columbia official website · Guam official website
More Size Comparisons
All District of Columbia 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.