The map above shows Montana and Puerto Rico side by side at exactly the same scale, using equal-area projections, so their true relative sizes are preserved.
Montana vs Puerto Rico Geography
Land area: Montana has a land area of 145,550 square miles (376,973 km²), while Puerto Rico has 3,424 square miles (8,868 km²). Montana's land area is 42.5 times larger than Puerto Rico's.
Total area: Montana: 147,043 square miles (380,840 km²) vs Puerto Rico: 3,515 square miles (9,104 km²), including inland and coastal water. Montana's total area is 41.8 times larger than Puerto Rico's.
Length: Montana is 319 miles (514 km) long from north to south; Puerto Rico is 67 miles (107 km). Montana's north-south length is 4.8 times (376%) longer than Puerto Rico's.
Width: Montana spans 607 miles (976 km) east to west; Puerto Rico spans 174 miles (279 km). Montana's east-west width is 3.5 times (249%) wider than Puerto Rico's.
Highest point: Montana's highest point is Granite Peak at 12,767 feet (3,891 m); Puerto Rico's is Cerro de Punta at 4,390 feet (1,338 m). Granite Peak is 8,377 feet higher than Cerro de Punta.
Lowest point: Montana's lowest point is Kootenai River at 1,805 feet; Puerto Rico's is Atlantic Ocean at 0 feet. Puerto Rico's lowest point is 1,805 feet lower.
Montana vs Puerto Rico Population and History
Population: Montana has a population of 1,137,233 (2024), while Puerto Rico has 3,285,874 (2020). Puerto Rico's population is 2.9 times (189%) larger than Montana's.
Population density: Montana: 7.8 people per square mile vs Puerto Rico: 959.7. Puerto Rico's population density is 123.0 times higher than Montana's.
Biggest city: Montana's biggest city is Billings with 121,483 people; Puerto Rico's is San Juan with 342,259. San Juan's population is 2.8 times (182%) larger than Billings'.
Largest metro area: Montana's largest metropolitan area is Billings, MT metro area (192,531 people) vs Puerto Rico's San Juan metro area (2,233,177). San Juan metro area's population is 11.6 times larger than Billings, MT metro area's.
History: Montana: Admitted to the Union on November 8, 1889, as the 41st state. Puerto Rico: A US territory since 1898; a commonwealth since 1952. In its current form, Montana is the older of the two by 9 years.
Montana vs Puerto Rico Economy
GDP: Montana's GDP is $78.4 billion (2024) vs Puerto Rico's $129.0 billion. Puerto Rico's economic output is 1.6 times (65%) larger than Montana's.
GDP per capita: Montana: $68,975 per person vs Puerto Rico: $40,650. Montana's GDP per capita is 1.7 times (70%) higher than Puerto Rico's.
Official Websites
Montana official website · Puerto Rico official website
More Size Comparisons
All Montana size comparisons · All Puerto Rico 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.