The map above shows Colorado and Massachusetts side by side at exactly the same scale, using equal-area projections, so their true relative sizes are preserved.
Colorado vs Massachusetts Geography
Land area
- Colorado has a land area of 103,637 square miles (268,419 km²), while Massachusetts has 7,801 square miles (20,204 km²).
- Colorado's land area is 13.3 times larger than Massachusetts'.
Total area
- Colorado: 104,095 square miles (269,605 km²) vs Massachusetts: 10,554 square miles (27,335 km²), including inland and coastal water.
- Colorado's total area is 9.9 times (886%) larger than Massachusetts'.
Length
- Colorado is 467 miles (751 km) long from north to south; Massachusetts is 123 miles (198 km).
- Colorado's north-south length is 3.8 times (280%) longer than Massachusetts'.
Width
- Colorado spans 387 miles (622 km) east to west; Massachusetts spans 185 miles (297 km).
- Colorado's east-west width is 2.1 times (109%) wider than Massachusetts'.
Highest point
- Colorado's highest point is Mount Elbert at 14,422 feet (4,396 m); Massachusetts's is Mount Greylock at 3,489 feet (1,063 m).
- Mount Elbert is 10,933 feet higher than Mount Greylock.
Lowest point
- Colorado's lowest point is Arikaree River at 3,326 feet; Massachusetts's is Atlantic Ocean at 0 feet.
- Massachusetts's lowest point is 3,326 feet lower.
Colorado vs Massachusetts Population and History
Population
- Colorado has a population of 5,957,493 (2024), while Massachusetts has 7,136,171 (2024).
- Massachusetts' population is 1.2 times (20%) larger than Colorado's.
Population density
- Colorado: 57.5 people per square mile vs Massachusetts: 914.8.
- Massachusetts' population density is 15.9 times higher than Colorado's.
Biggest city
- Colorado's biggest city is Denver with 729,019 people; Massachusetts's is Boston with 673,458.
- Denver's population is 1.1 times (8%) larger than Boston's.
Largest metro area
- Colorado's largest metropolitan area is Denver-Aurora-Centennial, CO metro area (3,052,498 people) vs Massachusetts's Boston-Cambridge-Newton, MA-NH metro area (5,025,517).
- Boston-Cambridge-Newton, MA-NH metro area's population is 1.6 times (65%) larger than Denver-Aurora-Centennial, CO metro area's.
History
- Colorado: Admitted to the Union on August 1, 1876, as the 38th state.
- Massachusetts: Admitted to the Union on February 6, 1788, as the 6th state.
- In its current form, Massachusetts is the older of the two by 88 years.
Colorado vs Massachusetts Economy
GDP
- Colorado's GDP is $557.6 billion (2024) vs Massachusetts's $778.5 billion.
- Massachusetts' economic output is 1.4 times (40%) larger than Colorado's.
GDP per capita
- Colorado: $93,602 per person vs Massachusetts: $109,095.
- Massachusetts' GDP per capita is 1.2 times (17%) higher than Colorado's.
Average income
- Colorado: $83,055 vs Massachusetts: $93,607 average income per person (per capita personal income).
- Massachusetts' average income is 1.1 times (13%) higher than Colorado's.
Colorado vs Massachusetts Counties
Number of counties
- Colorado has 64 counties, while Massachusetts has 14.
- Colorado's county count is 4.6 times (357%) higher than Massachusetts'.
Biggest county by area
- Colorado's largest county is Las Animas County at 4,773 square miles; Massachusetts's is Worcester County at 1,511 square miles.
- Las Animas County's land area is 3.2 times (216%) larger than Worcester County's.
Smallest county by area
- Colorado: Broomfield County (33 sq mi) vs Massachusetts: Nantucket County (46 sq mi).
- Nantucket County's land area is 1.4 times (40%) larger than Broomfield County's.
Most populous county
- Colorado: El Paso County (752,772 people) vs Massachusetts: Middlesex County (1,668,956 people).
- Middlesex County's population is 2.2 times (122%) larger than El Paso County's.
Least populous county
- Colorado: Hinsdale County (747 people) vs Massachusetts: Nantucket County (14,670 people).
- Nantucket County's population is 19.6 times larger than Hinsdale County's.
Richest county
- Colorado: Pitkin County ($275,044 per capita income) vs Massachusetts: Nantucket County ($129,250).
- Pitkin County's income is 2.1 times (113%) richer than Nantucket County's.
Poorest county
- Colorado: Crowley County ($27,232 per capita income) vs Massachusetts: Hampshire County ($65,432).
- Hampshire County's income is 2.4 times (140%) richer than Crowley County's.
Colorado vs Massachusetts Taxes
State income tax
- Colorado has a top income tax rate of 4.4%, while Massachusetts has a top income tax rate of 9%.
- Massachusetts's top rate is 4.6 percentage points higher.
Property tax
- Colorado: 0.49% effective rate vs Massachusetts: 1% of home value per year.
- Massachusetts's rate is 0.51 percentage points higher.
Sales tax
- Colorado: 7.89% combined state and average local rate vs Massachusetts: 6.25%.
- Colorado's combined rate is 1.64 percentage points higher.
Official Websites
Colorado official website · Massachusetts official website
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More Size Comparisons
All Colorado size comparisons · All Massachusetts 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.