The map above shows Montana and Wisconsin side by side at exactly the same scale, using equal-area projections, so their true relative sizes are preserved.
Montana vs Wisconsin Geography
Land area: Montana has a land area of 145,550 square miles (376,973 km²), while Wisconsin has 54,168 square miles (140,294 km²). Montana's land area is 2.7 times (169%) larger than Wisconsin's.
Total area: Montana: 147,043 square miles (380,840 km²) vs Wisconsin: 65,497 square miles (169,636 km²), including inland and coastal water. Montana's total area is 2.2 times (125%) larger than Wisconsin's.
Length: Montana is 319 miles (514 km) long from north to south; Wisconsin is 368 miles (593 km). Wisconsin's north-south length is 1.2 times (15%) longer than Montana's.
Width: Montana spans 607 miles (976 km) east to west; Wisconsin spans 323 miles (521 km). Montana's east-west width is 1.9 times (88%) wider than Wisconsin's.
Highest point: Montana's highest point is Granite Peak at 12,767 feet (3,891 m); Wisconsin's is Timms Hill at 1,946 feet (593 m). Granite Peak is 10,821 feet higher than Timms Hill.
Lowest point: Montana's lowest point is Kootenai River at 1,805 feet; Wisconsin's is Lake Michigan at 577 feet. Wisconsin's lowest point is 1,228 feet lower.
Montana vs Wisconsin Population and History
Population: Montana has a population of 1,137,233 (2024), while Wisconsin has 5,960,975 (2024). Wisconsin's population is 5.2 times (424%) larger than Montana's.
Population density: Montana: 7.8 people per square mile vs Wisconsin: 110.0. Wisconsin's population density is 14.1 times higher than Montana's.
Biggest city: Montana's biggest city is Billings with 121,483 people; Wisconsin's is Milwaukee with 563,531. Milwaukee's population is 4.6 times (364%) larger than Billings'.
Largest metro area: Montana's largest metropolitan area is Billings, MT metro area (192,531 people) vs Wisconsin's Minneapolis-St. Paul-Bloomington, MN-WI metro area (3,757,952). Minneapolis-St. Paul-Bloomington, MN-WI metro area's population is 19.5 times larger than Billings, MT metro area's.
History: Montana: Admitted to the Union on November 8, 1889, as the 41st state. Wisconsin: Admitted to the Union on May 29, 1848, as the 30th state. In its current form, Wisconsin is the older of the two by 41 years.
Montana vs Wisconsin Economy
GDP: Montana's GDP is $78.4 billion (2024) vs Wisconsin's $453.3 billion. Wisconsin's economic output is 5.8 times (478%) larger than Montana's.
GDP per capita: Montana: $68,975 per person vs Wisconsin: $76,044. Wisconsin's GDP per capita is 1.1 times (10%) higher than Montana's.
Average income: Montana: $69,240 vs Wisconsin: $67,755 average income per person (per capita personal income). Montana and Wisconsin have about the same average income.
Montana vs Wisconsin Counties
Number of counties: Montana has 56 counties, while Wisconsin has 72. Wisconsin's county count is 1.3 times (29%) higher than Montana's.
Biggest county by area: Montana's largest county is Beaverhead County at 5,543 square miles; Wisconsin's is Marathon County at 1,545 square miles. Beaverhead County's land area is 3.6 times (259%) larger than Marathon County's.
Smallest county by area: Montana: Silver Bow County (718 sq mi) vs Wisconsin: Pepin County (232 sq mi). Silver Bow County's land area is 3.1 times (209%) larger than Pepin County's.
Most populous county: Montana: Yellowstone County (171,583 people) vs Wisconsin: Milwaukee County (924,740 people). Milwaukee County's population is 5.4 times (439%) larger than Yellowstone County's.
Least populous county: Montana: Petroleum County (525 people) vs Wisconsin: Menominee County (4,286 people). Menominee County's population is 8.2 times (716%) larger than Petroleum County's.
Richest county: Montana: Gallatin County ($94,573 per capita income) vs Wisconsin: Ozaukee County ($109,947). Ozaukee County's income is 1.2 times (16%) richer than Gallatin County's.
Poorest county: Montana: Blaine County ($37,554 per capita income) vs Wisconsin: Menominee County ($43,696). Menominee County's income is 1.2 times (16%) richer than Blaine County's.
Montana vs Wisconsin Taxes
State income tax: Montana has a top income tax rate of 5.65%, while Wisconsin has a top income tax rate of 7.65%. Wisconsin's top rate is 2 percentage points higher.
Property tax: Montana: 0.69% effective rate vs Wisconsin: 1.25% of home value per year. Wisconsin's rate is 0.56 percentage points higher.
Sales tax: Montana: 0% combined state and average local rate vs Wisconsin: 5.72%. Wisconsin's combined rate is 5.72 percentage points higher.
Official Websites
Montana official website · Wisconsin official website
More Size Comparisons
All Montana size comparisons · All Wisconsin 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.