The map above shows Colorado and Montana side by side at exactly the same scale, using equal-area projections, so their true relative sizes are preserved.
Colorado vs Montana Geography
Land area
- Colorado has a land area of 103,637 square miles (268,419 km²), while Montana has 145,550 square miles (376,973 km²).
- Montana's land area is 1.4 times (40%) larger than Colorado's.
Total area
- Colorado: 104,095 square miles (269,605 km²) vs Montana: 147,043 square miles (380,840 km²), including inland and coastal water.
- Montana's total area is 1.4 times (41%) larger than Colorado's.
Length
- Colorado is 467 miles (751 km) long from north to south; Montana is 319 miles (514 km).
- Colorado's north-south length is 1.5 times (46%) longer than Montana's.
Width
- Colorado spans 387 miles (622 km) east to west; Montana spans 607 miles (976 km).
- Montana's east-west width is 1.6 times (57%) wider than Colorado's.
Highest point
- Colorado's highest point is Mount Elbert at 14,422 feet (4,396 m); Montana's is Granite Peak at 12,767 feet (3,891 m).
- Mount Elbert is 1,655 feet higher than Granite Peak.
Lowest point
- Colorado's lowest point is Arikaree River at 3,326 feet; Montana's is Kootenai River at 1,805 feet.
- Montana's lowest point is 1,521 feet lower.
Colorado vs Montana Population and History
Population
- Colorado has a population of 5,957,493 (2024), while Montana has 1,137,233 (2024).
- Colorado's population is 5.2 times (424%) larger than Montana's.
Population density
- Colorado: 57.5 people per square mile vs Montana: 7.8.
- Colorado's population density is 7.4 times (637%) higher than Montana's.
Biggest city
- Colorado's biggest city is Denver with 729,019 people; Montana's is Billings with 121,483.
- Denver's population is 6.0 times (500%) larger than Billings'.
Largest metro area
- Colorado's largest metropolitan area is Denver-Aurora-Centennial, CO metro area (3,052,498 people) vs Montana's Billings, MT metro area (192,531).
- Denver-Aurora-Centennial, CO metro area's population is 15.9 times larger than Billings, MT metro area's.
History
- Colorado: Admitted to the Union on August 1, 1876, as the 38th state.
- Montana: Admitted to the Union on November 8, 1889, as the 41st state.
- In its current form, Colorado is the older of the two by 13 years.
Colorado vs Montana Economy
GDP
- Colorado's GDP is $557.6 billion (2024) vs Montana's $78.4 billion.
- Colorado's economic output is 7.1 times (611%) larger than Montana's.
GDP per capita
- Colorado: $93,602 per person vs Montana: $68,975.
- Colorado's GDP per capita is 1.4 times (36%) higher than Montana's.
Average income
- Colorado: $83,055 vs Montana: $69,240 average income per person (per capita personal income).
- Colorado's average income is 1.2 times (20%) higher than Montana's.
Colorado vs Montana Counties
Number of counties
- Colorado has 64 counties, while Montana has 56.
- Colorado's county count is 1.1 times (14%) higher than Montana's.
Biggest county by area
- Colorado's largest county is Las Animas County at 4,773 square miles; Montana's is Beaverhead County at 5,543 square miles.
- Beaverhead County's land area is 1.2 times (16%) larger than Las Animas County's.
Smallest county by area
- Colorado: Broomfield County (33 sq mi) vs Montana: Silver Bow County (718 sq mi).
- Silver Bow County's land area is 21.8 times larger than Broomfield County's.
Most populous county
- Colorado: El Paso County (752,772 people) vs Montana: Yellowstone County (171,583 people).
- El Paso County's population is 4.4 times (339%) larger than Yellowstone County's.
Least populous county
- Colorado: Hinsdale County (747 people) vs Montana: Petroleum County (525 people).
- Hinsdale County's population is 1.4 times (42%) larger than Petroleum County's.
Richest county
- Colorado: Pitkin County ($275,044 per capita income) vs Montana: Gallatin County ($94,573).
- Pitkin County's income is 2.9 times (191%) richer than Gallatin County's.
Poorest county
- Colorado: Crowley County ($27,232 per capita income) vs Montana: Blaine County ($37,554).
- Blaine County's income is 1.4 times (38%) richer than Crowley County's.
Colorado vs Montana Taxes
State income tax
- Colorado has a top income tax rate of 4.4%, while Montana has a top income tax rate of 5.65%.
- Montana's top rate is 1.25 percentage points higher.
Property tax
- Colorado: 0.49% effective rate vs Montana: 0.69% of home value per year.
- Montana's rate is 0.2 percentage points higher.
Sales tax
- Colorado: 7.89% combined state and average local rate vs Montana: 0%.
- Colorado's combined rate is 7.89 percentage points higher.
Official Websites
Colorado official website · Montana official website
Download the Colorado vs Montana Size Comparison Map for free
To download the map, right-click the image above (or press and hold on a phone or tablet) and choose Save image as. The map is free to use anywhere, including on your own website or in print, as long as you credit it with a link back to this page or to BrilliantMaps.com.
More Size Comparisons
All Colorado 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.