The map above shows United States and Montana side by side at exactly the same scale, using equal-area projections, so their true relative sizes are preserved.
United States vs Montana Geography
Land area: United States has a land area of 3,533,467 square miles (9,151,637 km²), while Montana has 145,550 square miles (376,973 km²). United States' land area is 24.3 times larger than Montana's.
Total area: United States: 3,802,784 square miles (9,849,165 km²) vs Montana: 147,043 square miles (380,840 km²), including inland and coastal water. United States' total area is 25.9 times larger than Montana's.
Length: United States is 3,628 miles (5,839 km) long from north to south; Montana is 319 miles (514 km). United States' north-south length is 11.4 times longer than Montana's.
Width: United States spans 4,824 miles (7,763 km) east to west; Montana spans 607 miles (976 km). United States' east-west width is 7.9 times (695%) wider than Montana's.
Highest point: United States's highest point is Denali at 20,308 feet (6,190 m); Montana's is Granite Peak at 12,767 feet (3,891 m). Denali is 7,541 feet higher than Granite Peak.
Lowest point: United States's lowest point is Death Valley at -279 feet; Montana's is Kootenai River at 1,805 feet. United States's lowest point is 2,084 feet lower.
United States vs Montana Population and History
Population: United States has a population of 340,110,988 (2024), while Montana has 1,137,233 (2024). United States' population is 299.1 times larger than Montana's.
Population density: United States: 96.3 people per square mile vs Montana: 7.8. United States' population density is 12.3 times higher than Montana's.
Biggest city: United States's biggest city is New York with 8,478,072 people; Montana's is Billings with 121,483. New York's population is 69.8 times larger than Billings'.
Largest metro area: United States's largest metropolitan area is New York-Newark-Jersey City, NY-NJ metro area (19,940,274 people) vs Montana's Billings, MT metro area (192,531). New York-Newark-Jersey City, NY-NJ metro area's population is 103.6 times larger than Billings, MT metro area's.
History: United States: Declared independence on July 4, 1776. Montana: Admitted to the Union on November 8, 1889, as the 41st state. In its current form, United States is the older of the two by 113 years.
United States vs Montana Economy
GDP: United States's GDP is $30,769.7 billion (2025) vs Montana's $78.4 billion. United States' economic output is 392.5 times larger than Montana's.
GDP per capita: United States: $89,599 per person vs Montana: $68,975. United States' GDP per capita is 1.3 times (30%) higher than Montana's.
Official Websites
United States official website · Montana official website
More Size Comparisons
All United States size comparisons · All Montana 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.