The map above shows Montana and Alberta side by side at exactly the same scale, using equal-area projections, so their true relative sizes are preserved.
Montana vs Alberta Geography
Land area: Montana has a land area of 145,550 square miles (376,973 km²), while Alberta has 248,000 square miles (642,317 km²). Alberta's land area is 1.7 times (70%) larger than Montana's.
Total area: Montana: 147,043 square miles (380,840 km²) vs Alberta: 255,541 square miles (661,848 km²), including inland and coastal water. Alberta's total area is 1.7 times (74%) larger than Montana's.
Length: Montana is 319 miles (514 km) long from north to south; Alberta is 810 miles (1,303 km). Alberta's north-south length is 2.5 times (154%) longer than Montana's.
Width: Montana spans 607 miles (976 km) east to west; Alberta spans 544 miles (876 km). Montana's east-west width is 1.1 times (12%) wider than Alberta's.
Highest point: Montana's highest point is Granite Peak at 12,767 feet (3,891 m); Alberta's is Mount Columbia at 12,293 feet (3,747 m). Granite Peak is 474 feet higher than Mount Columbia.
Lowest point: Montana's lowest point is Kootenai River at 1,805 feet; Alberta's is Slave River at 499 feet. Alberta's lowest point is 1,306 feet lower.
Montana vs Alberta Population and History
Population: Montana has a population of 1,137,233 (2024), while Alberta has 5,048,151 (2026). Alberta's population is 4.4 times (344%) larger than Montana's.
Population density: Montana: 7.8 people per square mile vs Alberta: 20.4. Alberta's population density is 2.6 times (162%) higher than Montana's.
Biggest city: Montana's biggest city is Billings with 121,483 people; Alberta's is Calgary with 1,306,784. Calgary's population is 10.8 times larger than Billings'.
Largest metro area: Montana's largest metropolitan area is Billings, MT metro area (192,531 people) vs Alberta's Calgary CMA (1,481,806). Calgary CMA's population is 7.7 times (670%) larger than Billings, MT metro area's.
History: Montana: Admitted to the Union on November 8, 1889, as the 41st state. Alberta: Joined Confederation on September 1, 1905. In its current form, Montana is the older of the two by 16 years.
Montana vs Alberta Economy
GDP: Montana's GDP is $78.4 billion (2024) vs Alberta's $346.0 billion. Alberta's economic output is 4.4 times (341%) larger than Montana's.
GDP per capita: Montana: $68,975 per person vs Alberta: $70,487. Montana and Alberta have about the same GDP per capita.
Official Websites
Montana official website · Alberta official website
More Size Comparisons
All Montana size comparisons · All Alberta 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.