Colorado Flag

Colorado

Statehood Year:
1876
Capital:
Denver
Largest Cities:
Denver, Colorado Springs, Aurora
Abbreviation:
CO

Colorado is a state in the Mountain region of the United States, known for the Rocky Mountains, high plains, and alpine wilderness. It has a population of 6,013,650, making it the 20th most populated state in the country. The capital city is Denver. Colorado has a diverse economy with tech, aerospace, and outdoor recreation focus.

6,013,650
Total Population
58
Population Density (mi²)
20
Population Rank
56.2K 0.94%
Annual Population Growth

Colorado Population

Demographics

Economics and Income Statistics

Population by County

Population by County

2025 Pop.

100K

200K

300K

400K

500K

600K

700K

Population Growth by County

Change (2020)

-0.05

-0.025

0

0.025

0.05

0.075

Population Density by County

Density

500

1000

1.5K

2K

2.5K

3K

3.5K

4K

4.5K

Sources

  1. US Census State Population Estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
  2. US Census County Population Estimates - Most recent county estimates from the Census Bureau's Population Estimates Program
  3. American Community Survey (2009 - 2013)
  4. Census QuickFacts
  5. Historical Populations of States and Counties (1790 - 1990)