The map above shows Montana and Wyoming side by side at exactly the same scale, using equal-area projections, so their true relative sizes are preserved.
Montana vs Wyoming Geography
Land area: Montana has a land area of 145,550 square miles (376,973 km²), while Wyoming has 97,089 square miles (251,458 km²). Montana's land area is 1.5 times (50%) larger than Wyoming's.
Total area: Montana: 147,043 square miles (380,840 km²) vs Wyoming: 97,810 square miles (253,326 km²), including inland and coastal water. Montana's total area is 1.5 times (50%) larger than Wyoming's.
Length: Montana is 319 miles (514 km) long from north to south; Wyoming is 324 miles (522 km). Montana and Wyoming have about the same north-south length.
Width: Montana spans 607 miles (976 km) east to west; Wyoming spans 410 miles (659 km). Montana's east-west width is 1.5 times (48%) wider than Wyoming's.
Highest point: Montana's highest point is Granite Peak at 12,767 feet (3,891 m); Wyoming's is Gannett Peak at 13,788 feet (4,203 m). Gannett Peak is 1,021 feet higher than Granite Peak.
Lowest point: Montana's lowest point is Kootenai River at 1,805 feet; Wyoming's is Belle Fourche River at 3,108 feet. Montana's lowest point is 1,303 feet lower.
Montana vs Wyoming Population and History
Population: Montana has a population of 1,137,233 (2024), while Wyoming has 587,618 (2024). Montana's population is 1.9 times (94%) larger than Wyoming's.
Population density: Montana: 7.8 people per square mile vs Wyoming: 6.1. Montana's population density is 1.3 times (28%) higher than Wyoming's.
Biggest city: Montana's biggest city is Billings with 121,483 people; Wyoming's is Cheyenne with 65,704. Billings' population is 1.8 times (85%) larger than Cheyenne's.
Largest metro area: Montana's largest metropolitan area is Billings, MT metro area (192,531 people) vs Wyoming's Cheyenne, WY metro area (101,783). Billings, MT metro area's population is 1.9 times (89%) larger than Cheyenne, WY metro area's.
History: Montana: Admitted to the Union on November 8, 1889, as the 41st state. Wyoming: Admitted to the Union on July 10, 1890, as the 44th state. In its current form, Montana is the older of the two by 1 years.
Montana vs Wyoming Economy
GDP: Montana's GDP is $78.4 billion (2024) vs Wyoming's $51.5 billion. Montana's economic output is 1.5 times (52%) larger than Wyoming's.
GDP per capita: Montana: $68,975 per person vs Wyoming: $87,639. Wyoming's GDP per capita is 1.3 times (27%) higher than Montana's.
Average income: Montana: $69,240 vs Wyoming: $86,477 average income per person (per capita personal income). Wyoming's average income is 1.2 times (25%) higher than Montana's.
Montana vs Wyoming Counties
Number of counties: Montana has 56 counties, while Wyoming has 23. Montana's county count is 2.4 times (143%) higher than Wyoming's.
Biggest county by area: Montana's largest county is Beaverhead County at 5,543 square miles; Wyoming's is Sweetwater County at 10,427 square miles. Sweetwater County's land area is 1.9 times (88%) larger than Beaverhead County's.
Smallest county by area: Montana: Silver Bow County (718 sq mi) vs Wyoming: Hot Springs County (2,004 sq mi). Hot Springs County's land area is 2.8 times (179%) larger than Silver Bow County's.
Most populous county: Montana: Yellowstone County (171,583 people) vs Wyoming: Laramie County (101,783 people). Yellowstone County's population is 1.7 times (69%) larger than Laramie County's.
Least populous county: Montana: Petroleum County (525 people) vs Wyoming: Niobrara County (2,301 people). Niobrara County's population is 4.4 times (338%) larger than Petroleum County's.
Richest county: Montana: Gallatin County ($94,573 per capita income) vs Wyoming: Teton County ($532,903). Teton County's income is 5.6 times (463%) richer than Gallatin County's.
Poorest county: Montana: Blaine County ($37,554 per capita income) vs Wyoming: Uinta County ($50,370). Uinta County's income is 1.3 times (34%) richer than Blaine County's.
Montana vs Wyoming Taxes
State income tax: Montana has a top income tax rate of 5.65%, while Wyoming has no state income tax. Montana's top rate is 5.65 percentage points higher.
Property tax: Montana: 0.69% effective rate vs Wyoming: 0.57% of home value per year. Montana's rate is 0.12 percentage points higher.
Sales tax: Montana: 0% combined state and average local rate vs Wyoming: 5.39%. Wyoming's combined rate is 5.39 percentage points higher.
Official Websites
Montana official website · Wyoming official website
More Size Comparisons
All Montana size comparisons · All Wyoming 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.