The map above shows Indiana and Montana side by side at exactly the same scale, using equal-area projections, so their true relative sizes are preserved.
Indiana vs Montana Geography
Land area
- Indiana has a land area of 35,825 square miles (92,787 km²), while Montana has 145,550 square miles (376,973 km²).
- Montana's land area is 4.1 times (306%) larger than Indiana's.
Total area
- Indiana: 36,421 square miles (94,331 km²) vs Montana: 147,043 square miles (380,840 km²), including inland and coastal water.
- Montana's total area is 4.0 times (304%) larger than Indiana's.
Length
- Indiana is 276 miles (444 km) long from north to south; Montana is 319 miles (514 km).
- Montana's north-south length is 1.2 times (16%) longer than Indiana's.
Width
- Indiana spans 193 miles (310 km) east to west; Montana spans 607 miles (976 km).
- Montana's east-west width is 3.1 times (215%) wider than Indiana's.
Highest point
- Indiana's highest point is Hoosier Hill at 1,255 feet (383 m); Montana's is Granite Peak at 12,767 feet (3,891 m).
- Granite Peak is 11,512 feet higher than Hoosier Hill.
Lowest point
- Indiana's lowest point is Ohio River at 330 feet; Montana's is Kootenai River at 1,805 feet.
- Indiana's lowest point is 1,475 feet lower.
Indiana vs Montana Population and History
Population
- Indiana has a population of 6,924,275 (2024), while Montana has 1,137,233 (2024).
- Indiana's population is 6.1 times (509%) larger than Montana's.
Population density
- Indiana: 193.3 people per square mile vs Montana: 7.8.
- Indiana's population density is 24.8 times higher than Montana's.
Biggest city
- Indiana's biggest city is Indianapolis with 891,484 people; Montana's is Billings with 121,483.
- Indianapolis' population is 7.3 times (634%) larger than Billings'.
Largest metro area
- Indiana's largest metropolitan area is Chicago-Naperville-Elgin, IL-IN metro area (9,408,576 people) vs Montana's Billings, MT metro area (192,531).
- Chicago-Naperville-Elgin, IL-IN metro area's population is 48.9 times larger than Billings, MT metro area's.
History
- Indiana: Admitted to the Union on December 11, 1816, as the 19th state.
- Montana: Admitted to the Union on November 8, 1889, as the 41st state.
- In its current form, Indiana is the older of the two by 73 years.
Indiana vs Montana Economy
GDP
- Indiana's GDP is $519.5 billion (2024) vs Montana's $78.4 billion.
- Indiana's economic output is 6.6 times (563%) larger than Montana's.
GDP per capita
- Indiana: $75,028 per person vs Montana: $68,975.
- Indiana's GDP per capita is 1.1 times (9%) higher than Montana's.
Average income
- Indiana: $64,077 vs Montana: $69,240 average income per person (per capita personal income).
- Montana's average income is 1.1 times (8%) higher than Indiana's.
Indiana vs Montana Counties
Number of counties
- Indiana has 92 counties, while Montana has 56.
- Indiana's county count is 1.6 times (64%) higher than Montana's.
Biggest county by area
- Indiana's largest county is Allen County at 657 square miles; Montana's is Beaverhead County at 5,543 square miles.
- Beaverhead County's land area is 8.4 times (744%) larger than Allen County's.
Smallest county by area
- Indiana: Ohio County (86 sq mi) vs Montana: Silver Bow County (718 sq mi).
- Silver Bow County's land area is 8.3 times (733%) larger than Ohio County's.
Most populous county
- Indiana: Marion County (981,628 people) vs Montana: Yellowstone County (171,583 people).
- Marion County's population is 5.7 times (472%) larger than Yellowstone County's.
Least populous county
- Indiana: Ohio County (5,996 people) vs Montana: Petroleum County (525 people).
- Ohio County's population is 11.4 times larger than Petroleum County's.
Richest county
- Indiana: Hamilton County ($104,283 per capita income) vs Montana: Gallatin County ($94,573).
- Hamilton County's income is 1.1 times (10%) richer than Gallatin County's.
Poorest county
- Indiana: Miami County ($44,940 per capita income) vs Montana: Blaine County ($37,554).
- Miami County's income is 1.2 times (20%) richer than Blaine County's.
Indiana vs Montana Taxes
State income tax
- Indiana has a top income tax rate of 2.95%, while Montana has a top income tax rate of 5.65%.
- Montana's top rate is 2.7 percentage points higher.
Property tax
- Indiana: 0.74% effective rate vs Montana: 0.69% of home value per year.
- Indiana's rate is 0.05 percentage points higher.
Sales tax
- Indiana: 7% combined state and average local rate vs Montana: 0%.
- Indiana's combined rate is 7 percentage points higher.
Official Websites
Indiana official website · Montana official website
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More Size Comparisons
All Indiana 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.