The map above shows Colorado and Oklahoma side by side at exactly the same scale, using equal-area projections, so their true relative sizes are preserved.
Colorado vs Oklahoma Geography
Land area: Colorado has a land area of 103,637 square miles (268,419 km²), while Oklahoma has 68,597 square miles (177,665 km²). Colorado's land area is 1.5 times (51%) larger than Oklahoma's.
Total area: Colorado: 104,095 square miles (269,605 km²) vs Oklahoma: 69,899 square miles (181,038 km²), including inland and coastal water. Colorado's total area is 1.5 times (49%) larger than Oklahoma's.
Length: Colorado is 467 miles (751 km) long from north to south; Oklahoma is 533 miles (857 km). Oklahoma's north-south length is 1.1 times (14%) longer than Colorado's.
Width: Colorado spans 387 miles (622 km) east to west; Oklahoma spans 490 miles (789 km). Oklahoma's east-west width is 1.3 times (27%) wider than Colorado's.
Highest point: Colorado's highest point is Mount Elbert at 14,422 feet (4,396 m); Oklahoma's is Black Mesa at 4,980 feet (1,518 m). Mount Elbert is 9,442 feet higher than Black Mesa.
Lowest point: Colorado's lowest point is Arikaree River at 3,326 feet; Oklahoma's is Little River at 289 feet. Oklahoma's lowest point is 3,037 feet lower.
Colorado vs Oklahoma Population and History
Population: Colorado has a population of 5,957,493 (2024), while Oklahoma has 4,095,393 (2024). Colorado's population is 1.5 times (45%) larger than Oklahoma's.
Population density: Colorado: 57.5 people per square mile vs Oklahoma: 59.7. Colorado and Oklahoma have about the same population density.
Biggest city: Colorado's biggest city is Denver with 729,019 people; Oklahoma's is Oklahoma City with 712,919. Denver and Oklahoma City have about the same population.
Largest metro area: Colorado's largest metropolitan area is Denver-Aurora-Centennial, CO metro area (3,052,498 people) vs Oklahoma's Oklahoma City, OK metro area (1,497,821). Denver-Aurora-Centennial, CO metro area's population is 2.0 times (104%) larger than Oklahoma City, OK metro area's.
History: Colorado: Admitted to the Union on August 1, 1876, as the 38th state. Oklahoma: Admitted to the Union on November 16, 1907, as the 46th state. In its current form, Colorado is the older of the two by 31 years.
Colorado vs Oklahoma Economy
GDP: Colorado's GDP is $557.6 billion (2024) vs Oklahoma's $263.7 billion. Colorado's economic output is 2.1 times (111%) larger than Oklahoma's.
GDP per capita: Colorado: $93,602 per person vs Oklahoma: $64,388. Colorado's GDP per capita is 1.5 times (45%) higher than Oklahoma's.
Average income: Colorado: $83,055 vs Oklahoma: $63,708 average income per person (per capita personal income). Colorado's average income is 1.3 times (30%) higher than Oklahoma's.
Colorado vs Oklahoma Counties
Number of counties: Colorado has 64 counties, while Oklahoma has 77. Oklahoma's county count is 1.2 times (20%) higher than Colorado's.
Biggest county by area: Colorado's largest county is Las Animas County at 4,773 square miles; Oklahoma's is Osage County at 2,247 square miles. Las Animas County's land area is 2.1 times (112%) larger than Osage County's.
Smallest county by area: Colorado: Broomfield County (33 sq mi) vs Oklahoma: Marshall County (372 sq mi). Marshall County's land area is 11.3 times larger than Broomfield County's.
Most populous county: Colorado: El Paso County (752,772 people) vs Oklahoma: Oklahoma County (816,490 people). Oklahoma County's population is 1.1 times (8%) larger than El Paso County's.
Least populous county: Colorado: Hinsdale County (747 people) vs Oklahoma: Cimarron County (2,133 people). Cimarron County's population is 2.9 times (186%) larger than Hinsdale County's.
Richest county: Colorado: Pitkin County ($275,044 per capita income) vs Oklahoma: Washington County ($126,749). Pitkin County's income is 2.2 times (117%) richer than Washington County's.
Poorest county: Colorado: Crowley County ($27,232 per capita income) vs Oklahoma: Atoka County ($38,709). Atoka County's income is 1.4 times (42%) richer than Crowley County's.
Colorado vs Oklahoma Taxes
State income tax: Colorado has a top income tax rate of 4.4%, while Oklahoma has a top income tax rate of 4.5%. Oklahoma's top rate is 0.1 percentage points higher.
Property tax: Colorado: 0.49% effective rate vs Oklahoma: 0.75% of home value per year. Oklahoma's rate is 0.26 percentage points higher.
Sales tax: Colorado: 7.89% combined state and average local rate vs Oklahoma: 9.06%. Oklahoma's combined rate is 1.17 percentage points higher.
Official Websites
Colorado official website · Oklahoma official website
More Size Comparisons
All Colorado size comparisons · All Oklahoma 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.