The map above shows Missouri and Montana side by side at exactly the same scale, using equal-area projections, so their true relative sizes are preserved.
Missouri vs Montana Geography
Land area: Missouri has a land area of 68,746 square miles (178,052 km²), while Montana has 145,550 square miles (376,973 km²). Montana's land area is 2.1 times (112%) larger than Missouri's.
Total area: Missouri: 69,707 square miles (180,540 km²) vs Montana: 147,043 square miles (380,840 km²), including inland and coastal water. Montana's total area is 2.1 times (111%) larger than Missouri's.
Length: Missouri is 328 miles (529 km) long from north to south; Montana is 319 miles (514 km). Missouri and Montana have about the same north-south length.
Width: Missouri spans 437 miles (703 km) east to west; Montana spans 607 miles (976 km). Montana's east-west width is 1.4 times (39%) wider than Missouri's.
Highest point: Missouri's highest point is Taum Sauk Mountain at 1,771 feet (540 m); Montana's is Granite Peak at 12,767 feet (3,891 m). Granite Peak is 10,996 feet higher than Taum Sauk Mountain.
Lowest point: Missouri's lowest point is St. Francis River at 230 feet; Montana's is Kootenai River at 1,805 feet. Missouri's lowest point is 1,575 feet lower.
Missouri vs Montana Population and History
Population: Missouri has a population of 6,245,466 (2024), while Montana has 1,137,233 (2024). Missouri's population is 5.5 times (449%) larger than Montana's.
Population density: Missouri: 90.8 people per square mile vs Montana: 7.8. Missouri's population density is 11.6 times higher than Montana's.
Biggest city: Missouri's biggest city is Kansas City with 516,032 people; Montana's is Billings with 121,483. Kansas City's population is 4.2 times (325%) larger than Billings'.
Largest metro area: Missouri's largest metropolitan area is St. Louis, MO-IL metro area (2,811,927 people) vs Montana's Billings, MT metro area (192,531). St. Louis, MO-IL metro area's population is 14.6 times larger than Billings, MT metro area's.
History: Missouri: Admitted to the Union on August 10, 1821, as the 24th state. Montana: Admitted to the Union on November 8, 1889, as the 41st state. In its current form, Missouri is the older of the two by 68 years.
Missouri vs Montana Economy
GDP: Missouri's GDP is $448.7 billion (2024) vs Montana's $78.4 billion. Missouri's economic output is 5.7 times (472%) larger than Montana's.
GDP per capita: Missouri: $71,846 per person vs Montana: $68,975. Missouri and Montana have about the same GDP per capita.
Average income: Missouri: $64,920 vs Montana: $69,240 average income per person (per capita personal income). Montana's average income is 1.1 times (7%) higher than Missouri's.
Missouri vs Montana Counties
Number of counties: Missouri has 115 counties, while Montana has 56. Missouri's county count is 2.1 times (105%) higher than Montana's.
Biggest county by area: Missouri's largest county is Texas County at 1,177 square miles; Montana's is Beaverhead County at 5,543 square miles. Beaverhead County's land area is 4.7 times (371%) larger than Texas County's.
Smallest county by area: Missouri: St. Louis city (62 sq mi) vs Montana: Silver Bow County (718 sq mi). Silver Bow County's land area is 11.6 times larger than St. Louis city's.
Most populous county: Missouri: St. Louis County (992,929 people) vs Montana: Yellowstone County (171,583 people). St. Louis County's population is 5.8 times (479%) larger than Yellowstone County's.
Least populous county: Missouri: Worth County (1,872 people) vs Montana: Petroleum County (525 people). Worth County's population is 3.6 times (257%) larger than Petroleum County's.
Richest county: Missouri: St. Louis County ($104,775 per capita income) vs Montana: Gallatin County ($94,573). St. Louis County's income is 1.1 times (11%) richer than Gallatin County's.
Poorest county: Missouri: Douglas County ($40,515 per capita income) vs Montana: Blaine County ($37,554). Douglas County's income is 1.1 times (8%) richer than Blaine County's.
Missouri vs Montana Taxes
State income tax: Missouri has a top income tax rate of 4.7%, while Montana has a top income tax rate of 5.65%. Montana's top rate is 0.95 percentage points higher.
Property tax: Missouri: 0.79% effective rate vs Montana: 0.69% of home value per year. Missouri's rate is 0.1 percentage points higher.
Sales tax: Missouri: 8.44% combined state and average local rate vs Montana: 0%. Missouri's combined rate is 8.44 percentage points higher.
Official Websites
Missouri official website · Montana official website
More Size Comparisons
All Missouri 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.