Colorado Population 2018

5,684,203

Our 2018 estimate for Colorado's population is 5.68 million. This estimate is calculated from projecting the most recent Census estimates. The last official population count for Colorado was taken during the 2010 Census. At that time, it was found that the population was 5,029,196.

The 2010 Census numbers represented a rise of 16.9% from the 2000 census survey, when 4,301,262 residents were shown to be living in Colorado. Updated estimates arrive on a yearly basis, and in 2015, it was reported that the numbers in Colorado had increased to 5,456,574.

The 2015 estimate reflects an 8.5% increase since the last census. With a yearly growth rate of 1.85% in 2016, Colorado is second fastest-growing state in the US.

Colorado Population Density

With a large surface area of 104,094 square miles (269,837 square kilometers) Colorado is the eighth largest state in the USA, but it is relatively sparsely populated. Some of the terrain is harsh, and the vast Rocky Mountain range accounts for a significant proportion of the state’s land mass.

As a result, there are 52 people per square mile (19.9 per square kilometer) and that makes Colorado only the 37th biggest state in terms of population density.

Colorado Population History

Although part of Colorado was acquired as early as the Louisiana Purchase of 1803, it had no organized government until 1850, when parts of the present State were included in New Mexico and Utah Territories. Colorado was established as a territory in 1861 with its present boundaries, from parts of Kansas, Nebraska, New Mexico, and Utah Territories. The 1860 population is the total enumerated within the 1861 boundaries. Colorado was admitted as a State on August 1, 1876. Present-day Colorado had no census coverage in 1850, and none in 1860 for the portion taken from Utah Territory.

Colorado Population Chart

Colorado’s Population History

Historically, Colorado’s location in the middle of the USA made it a popular route for those traveling through the new world. Many liked the state so much that they chose to settle there, and the evidence of that is clear from the earliest censuses.

Back in 1860, the Colorado population was declared at 34,277 and ten years later, there had been just a modest rise of 16.3% to 39,864. However, by 1880 that figure had almost quadrupled and the census from that year reveals a total population of 194,327 -- an increase of 387.5% from the 1870 numbers.

Although that was by far the biggest increase in decade on decade terms, further significant rises followed, and by the beginning of the 20th century, Colorado’s numbers had grown to 539,700. In the latter half of the 1900s, increases in the region of 30% from census to census took the population of Colorado past the 5 million mark in 2012.

Colorado Population Projections

Many states in the US have shown growth at every census, but Colorado's population is actually growing faster now than it did during the 20s, 30s, and 40s. The current growth is already causing housing shortages and increased traffic as Denver and Colorado Springs try to address the increased immigration.

Like most states across the US, the population of Colorado is growing, but the growth has been significant in past years. Increases between censuses of 30% are not uncommon, and if that trend continues, the numbers could comfortably exceed 6 million at the next census in 2020. Some estimates have placed the 2040 population as high as 7.8 million.

Population Data via US Census

Colorado Growth Rate

Colorado Population Rank

Year Pop % Change
20205,838,3011.34%
20195,761,2521.36%
20185,684,2031.37%
20175,607,1541.39%
20165,530,105Infinity%
20165,359,295-1.49%
20155,440,4451.84%
20145,342,3111.52%
20135,262,5561.47%
20125,186,3301.37%
20115,116,4111.35%
20105,048,0291.61%
20004,301,2612.70%
19903,294,3941.32%
19802,889,9642.73%
19702,207,2592.33%
19601,753,9472.84%
19501,325,0891.67%
19401,123,2960.81%
19301,035,7910.98%
1920939,6291.63%
1910799,0244.00%
1900539,7002.71%
1890413,2497.84%
1880194,32717.16%
187039,8641.52%
186034,2770.00%

Colorado Facts

Colorado Population in 2018Source: By Rennett Stowe from USA (Colorado National Monument) [CC BY 2.0 (https://creativecommons.org/licenses/by/2.0)], via Wikimedia Commons

  • Colorado lies completely above 1,000 meters elevation. It is the only state that can make this claim.
  • Over one-third of the land in the state is owned by the US federal government.
  • Colorado has the largest city park system in the nation, boasting 205 parks within the city limits, and 20,000 acres of park space within the mountains.
  • The nation's highest suspension bridge is located near Canon City and is built over the Royal Gorge.
  • The view from Pikes Peak was the inspiration for the song, "America the Beautiful."
  • Colorado is the only place where four states -- Colorado, New Mexico, Utah and Arizona -- meet.
  • The first license plate was issued in Denver in 1908.
  • Leadville, Colorado, is the highest unincorporated town in the country at over 10,000 feet.
  • Lieutenant Zebulon Montgomery Pike explored the Louisiana Territory in 1806 and published a report that drew interest to the area.

Colorado Population Density by County

Denver County

  • Population704,621
  • Density4595.30 per sq km
  • Growth Since 201016.81%
  • State Rank1
  • % of State12.57%

Colorado Population Growth Rate by County

From the time of the 2010 Census until 2015 when the US Census Bureau took population estimates, several counties in the state posted significant growth rates. The counties with the highest growth are all neighboring, beginning with Larimer County and Weld County along the northern border, and ending with El Paso County. With a growth rate of 13.14%, Denver County had the highest recorded population growth during the 5-year period.

Just as some Colorado counties saw growth, others posted declining populations during the same time period. The southwestern county of Bent had the highest decline of 10.43%. while neighboring Las Animas County has the second largest decline of 8.68%. Other counties that saw decreases in population include Moffatt County, Hinsdale County, and Kit Carson County.

Population by Race

Race Population
White4,517,058
Some Other Race224,029
Black or African American219,349
Two or More Races183,735
Asian157,523
American Indian and Alaska Native50,160
Native Hawaiian and Other Pacific Islander7,441

Race Data via US Census (2016 ACS 5-Year Survey)

Colorado Population Pyramid 2018

0%2%4%6%8% Male Population0%2%4%6%8% Female Population80757065605550454035302520151050

Data via US Census (2016 ACS 5-Year Survey): Table S0101

Colorado Median Age

36.4


Total

35.5


Male

37.4


Female

Colorado Adults

There are 4,110,579 adults, (680,630 of which are seniors) in Colorado.

Colorado Age Dependency

56

Age Dependency Ratio

19.7

Old Age Dependency Ratio

36.3

Child Dependency Ratio

Colorado Sex Ratio

Female

2,669,659

49.81%

Male

2,689,636

50.19%

Colorado Households and Families

Colorado Renter vs Owner Occupied by Household Type

Colorado Household Types

Type Owner Renter
Married79.7%20.3%
All64.4%35.6%
Male53.2%46.8%
Non Family49.1%50.9%
Female47.9%52.1%

64.4%

Rate of Home Ownership

Colorado Households by Type

Type Count Average Size Owned
All2,051,6162.5664.4
Married1,019,0233.1979.7
Non Family732,6431.3549.1
Female205,9083.3347.9
Male94,0423.2753.2

3.13

Average Family Size

2.56

Average Household Size

5.7%

Unmarried (Opposite Sex)

0.5%

Unmarried (Same Sex)

Colorado Households

Colorado Education

Colorado Educational Attainment by Sex (over 25)

Education Attained Count Percentage
Less Than 9th Grade133,5253.72%
9th to 12th Grade190,1665.30%
High School Graduate780,03321.73%
Some College795,29422.15%
Associates Degree301,6028.40%
Bachelors Degree874,95324.37%
Graduate Degree514,77714.34%

Colorado Educational Attainment by Race

Name Total High School Bachelors
White2,661,4172,556,9841,191,603
Hispanic610,834426,05085,586
Black135,709121,39131,982
Other Race127,45084,32914,476
Asian106,52591,63753,566
Multiple Races77,01770,29425,833
Native American31,54425,8765,565
Islander4,5334,0731,085

The highest rate of high school graduation is among white people with a rate of 96.08%.

The highest rate of bachelors degrees is among white people with a rate of 50.28%.

Colorado Earnings by Educational Attainment

Name Average Male Female
Overall$39,960$46,220$32,472
Less Than High School$23,811$27,322$16,658
High School Grad$30,823$35,640$24,948
Some College$35,654$41,963$29,814
Bachelors Degree$50,171$61,528$40,697
Graduate Degree$64,148$82,143$52,278

$39,960

Average Earnings

$46,220

Average Male

$32,472

Average Female

Colorado Language

Colorado Language by Age

Colorado Language

83.04% of Colorado residents speak only English, while 16.96% speak other languages. The largest non-English language is Spanish, which is spoken by 11.88% of the population.

Colorado Poverty

Colorado Poverty by Race

Name Total In Poverty Poverty Rate
White3,625,038318,1298.78%
Hispanic1,105,420231,78620.97%
Other221,14452,48923.74%
Black207,63646,90722.59%
Multiple179,19827,00915.07%
Asian154,17617,98511.67%
Native47,63010,92722.94%
Islander7,0561,44520.48%

12.17%

Overall Poverty Rate

11.22%

Male Poverty Rate

13.12%

Female Poverty Rate

Poverty in Colorado

The race most likely to be in poverty in Colorado is Other, with 23.74% below the poverty level.

The race least likely to be in poverty in Colorado is White, with 8.78% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 2.51%. Among those working part-time, it was 17.43%, and for those that did not work, the poverty rate was 19.23%.

Colorado Poverty Rate by Education

Name Poverty
Less Than High School24.24%
High School12.04%
Some College9.16%
Bachelors or Greater4.36%

Colorado Poverty Rate by Employment Status and Sex

Name Poverty
Female Unemployed29.45%
Male Unemployed27.02%
Female Employed7.65%
Male Employed5.90%

Colorado Income

Colorado Income by Household Type

Name Median Mean
Households$62,520$84,384
Families$77,130$99,363
Married Families$89,035$112,338
Non Families$39,418$54,136

Colorado Marital Status

Colorado Marital Status

Marriage Rates

50.8%

Overall Marriage Rate

51.2%

Male Marriage Rate

50.4%

Female Marriage Rate

Colorado Married by Age and Sex

Colorado Marriage

The age group where males are most likely to be married is Over65, while the female age group most likely to be married is 35To44.

Colorado Marital Status by Race

Colorado Veterans

Colorado Veterans by War

383,699

Number of Veterans

344,469

Male Veterans

39,230

Female Veterans

Name Veterans
Vietnam137,964
First Gulf War91,087
Second Gulf War76,361
Korea30,053
World War II16,861

Colorado Veterans by Age

Name Veterans
35 to 54103,948
65 to 7490,202
55 to 6477,037
75+70,839
18 to 3441,673

Colorado Veterans by Race

Name Veterans % of Total
White339,5819.69%
Hispanic38,9855.26%
Black20,25312.78%
2 or More8,5488.51%
Other7,3674.81%
Asian3,9773.26%
Indian3,3418.89%
Hawaiian63211.90%

Colorado Veterans by Education

6.39%

Veteran Poverty Rate

25.26%

Veteran Disability Rate

Colorado Employment Status

Colorado Employment by Age

68.2%

Labor Force Participation

63.4%

Employment Rate

6%

Unemployment Rate

Colorado Employment by Race

Colorado Employment by Education

Colorado Nativity

Colorado Citizenship Status

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