The map above shows Colorado and Pennsylvania side by side at exactly the same scale, using equal-area projections, so their true relative sizes are preserved.
Colorado vs Pennsylvania Geography
Land area
- Colorado has a land area of 103,637 square miles (268,419 km²), while Pennsylvania has 44,742 square miles (115,882 km²).
- Colorado's land area is 2.3 times (132%) larger than Pennsylvania's.
Total area
- Colorado: 104,095 square miles (269,605 km²) vs Pennsylvania: 46,054 square miles (119,279 km²), including inland and coastal water.
- Colorado's total area is 2.3 times (126%) larger than Pennsylvania's.
Length
- Colorado is 467 miles (751 km) long from north to south; Pennsylvania is 284 miles (458 km).
- Colorado's north-south length is 1.6 times (64%) longer than Pennsylvania's.
Width
- Colorado spans 387 miles (622 km) east to west; Pennsylvania spans 307 miles (495 km).
- Colorado's east-west width is 1.3 times (26%) wider than Pennsylvania's.
Highest point
- Colorado's highest point is Mount Elbert at 14,422 feet (4,396 m); Pennsylvania's is Mount Davis at 3,210 feet (978 m).
- Mount Elbert is 11,212 feet higher than Mount Davis.
Lowest point
- Colorado's lowest point is Arikaree River at 3,326 feet; Pennsylvania's is Delaware River at 0 feet.
- Pennsylvania's lowest point is 3,326 feet lower.
Colorado vs Pennsylvania Population and History
Population
- Colorado has a population of 5,957,493 (2024), while Pennsylvania has 13,078,751 (2024).
- Pennsylvania's population is 2.2 times (120%) larger than Colorado's.
Population density
- Colorado: 57.5 people per square mile vs Pennsylvania: 292.3.
- Pennsylvania's population density is 5.1 times (408%) higher than Colorado's.
Biggest city
- Colorado's biggest city is Denver with 729,019 people; Pennsylvania's is Philadelphia with 1,573,916.
- Philadelphia's population is 2.2 times (116%) larger than Denver's.
Largest metro area
- Colorado's largest metropolitan area is Denver-Aurora-Centennial, CO metro area (3,052,498 people) vs Pennsylvania's Philadelphia-Camden-Wilmington, PA-NJ-DE-MD metro area (6,330,422).
- Philadelphia-Camden-Wilmington, PA-NJ-DE-MD metro area's population is 2.1 times (107%) larger than Denver-Aurora-Centennial, CO metro area's.
History
- Colorado: Admitted to the Union on August 1, 1876, as the 38th state.
- Pennsylvania: Admitted to the Union on December 12, 1787, as the 2nd state.
- In its current form, Pennsylvania is the older of the two by 89 years.
Colorado vs Pennsylvania Economy
GDP
- Colorado's GDP is $557.6 billion (2024) vs Pennsylvania's $1,007.9 billion.
- Pennsylvania's economic output is 1.8 times (81%) larger than Colorado's.
GDP per capita
- Colorado: $93,602 per person vs Pennsylvania: $77,062.
- Colorado's GDP per capita is 1.2 times (21%) higher than Pennsylvania's.
Average income
- Colorado: $83,055 vs Pennsylvania: $70,678 average income per person (per capita personal income).
- Colorado's average income is 1.2 times (18%) higher than Pennsylvania's.
Colorado vs Pennsylvania Counties
Number of counties
- Colorado has 64 counties, while Pennsylvania has 67.
- Colorado and Pennsylvania have about the same county count.
Biggest county by area
- Colorado's largest county is Las Animas County at 4,773 square miles; Pennsylvania's is Lycoming County at 1,229 square miles.
- Las Animas County's land area is 3.9 times (288%) larger than Lycoming County's.
Smallest county by area
- Colorado: Broomfield County (33 sq mi) vs Pennsylvania: Montour County (130 sq mi).
- Montour County's land area is 3.9 times (295%) larger than Broomfield County's.
Most populous county
- Colorado: El Paso County (752,772 people) vs Pennsylvania: Philadelphia County (1,573,916 people).
- Philadelphia County's population is 2.1 times (109%) larger than El Paso County's.
Least populous county
- Colorado: Hinsdale County (747 people) vs Pennsylvania: Cameron County (4,348 people).
- Cameron County's population is 5.8 times (482%) larger than Hinsdale County's.
Richest county
- Colorado: Pitkin County ($275,044 per capita income) vs Pennsylvania: Chester County ($110,883).
- Pitkin County's income is 2.5 times (148%) richer than Chester County's.
Poorest county
- Colorado: Crowley County ($27,232 per capita income) vs Pennsylvania: Forest County ($30,234).
- Forest County's income is 1.1 times (11%) richer than Crowley County's.
Colorado vs Pennsylvania Taxes
State income tax
- Colorado has a top income tax rate of 4.4%, while Pennsylvania has a top income tax rate of 3.07%.
- Colorado's top rate is 1.33 percentage points higher.
Property tax
- Colorado: 0.49% effective rate vs Pennsylvania: 1.16% of home value per year.
- Pennsylvania's rate is 0.67 percentage points higher.
Sales tax
- Colorado: 7.89% combined state and average local rate vs Pennsylvania: 6.34%.
- Colorado's combined rate is 1.55 percentage points higher.
Official Websites
Colorado official website · Pennsylvania official website
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More Size Comparisons
All Colorado size comparisons · All Pennsylvania 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.