Arapahoe County, Colorado Population 2021

Arapahoe County, Colorado's estimated population is 666,176 with a growth rate of 0.72% in the past year according to the most recent United States census data. Arapahoe County, Colorado is the null largest county in Colorado. The 2010 Population was 574,747 and has seen a growth of 15.91% since this time.

Note: 2020 and 2021 data is projected
Year Population Growth Growth Rate
2021666,1764,7930.72%
2020661,3834,7930.73%
2019656,5904,7930.74%
2018651,7977,3191.14%
2017644,4785,5280.87%
2016638,9507,9661.26%
2015630,98411,9501.93%
2014619,03410,5671.74%
2013608,46711,9672.01%
2012596,50010,5321.80%
2011585,96811,2211.95%
2010574,747183,23646.80%
1990391,51197,89033.34%
1980293,621131,47981.09%
1970162,14248,71642.95%
1960113,42661,301117.60%
195052,12519,97562.13%
194032,1509,50341.96%
193022,6478,88164.51%
192013,7663,50334.13%
191010,263-142,754-93.29%
1900153,01720,88215.80%
1890132,13593,491241.93%
188038,64431,815465.88%
18706,8290.00%
2021 Growth Rate
0.72%
County Website
Founded
November 1, 1861
County Seat
2010 Population
574,747
Growth Since 2010
15.91%
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Arapahoe County, Colorado Population Growth

Population by Race

Race Population Percentage
White461,11371.54%
Black or African American69,85310.84%
Some Other Race39,8706.19%
Asian38,9576.04%
Two or More Races28,8214.47%
American Indian and Alaska Native4,4820.70%
Native Hawaiian and Other Pacific Islander1,4640.23%
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Arapahoe County, Colorado Population By Race

Arapahoe County, Colorado Population Pyramid 2021

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Arapahoe County, Colorado Median Age

36.6


Total

35.5


Male

37.9


Female

Arapahoe County, Colorado Adults

There are 490,971 adults, (82,111 of whom are seniors) in Arapahoe County, Colorado.

Arapahoe County, Colorado Age Dependency

57.6

Age Dependency Ratio

20.1

Old Age Dependency Ratio

37.6

Child Dependency Ratio

Arapahoe County, Colorado Sex Ratio

Mujer

325,600

50.52%

Masculino

318,960

49.48%

Arapahoe County, Colorado Population by Age

Arapahoe County, Colorado Renter vs Owner Occupied by Household Type

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Arapahoe County, Colorado Household Types

Type Owner Renter
Married78.5%21.5%
All63.5%36.5%
Masculino51.3%48.7%
Non Family49.3%50.7%
Mujer45.8%54.2%

63.5%

Rate of Home Ownership

Arapahoe County, Colorado Households and Families

Type Count Average Size Owned
All240,3042.6663.5
Married119,0803.3278.5
Non Family82,6921.3249.3
Mujer25,6113.4545.8
Masculino12,9213.5251.3

3.26

Average Family Size

2.66

Average Household Size

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Arapahoe County, Colorado Households by Type

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Education Attained Count Percentage
Less Than 9th Grade13,8383.16%
9th to 12th Grade18,5014.23%
High School Graduate91,25520.84%
Some College89,43120.42%
Associates Degree37,6578.60%
Bachelors Degree118,89827.15%
Graduate Degree68,30715.60%
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Arapahoe County, Colorado Educational Attainment by Sex (over 25)

Arapahoe County, Colorado Educational Attainment by Race

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Race Total High School Bachelors
White289,425281,056145,416
Hispanic66,34250,47411,828
Black44,49640,91012,322
Asian26,97323,08413,573
Other Race21,75115,8572,527
2+ Races11,59010,7254,363
Native American3,0212,623694
Islander894806280

The highest rate of high school graduation is among white people with a rate of 97.11%.

The highest rate of bachelors degrees is among asian people with a rate of 50.32%.

Arapahoe County, Colorado Educational Attainment by Race

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Name Average Masculino Mujer
Overall$45,601$52,168$39,756
Less Than 9th Grade$27,398$31,498$21,168
High School Graduate$34,220$38,169$30,443
Some College$40,954$46,622$36,067
Bachelors Degree$56,885$70,792$46,870
Graduate Degree$73,022$88,269$60,892

$45,601

Average Earnings

$52,168

Average Male

$39,756

Average Female

Arapahoe County, Colorado Earnings by Educational Attainment

Arapahoe County, Colorado Language by Age

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Arapahoe County, Colorado Language

76.64% of Arapahoe County, Colorado residents speak only English, while 23.36% speak other languages. The non-English language spoken by the largest group is Spanish, which is spoken by 12.48% of the population.

Arapahoe County, Colorado Language

Arapahoe County, Colorado Poverty by Race

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Name Total In Poverty Poverty Rate
White384,35921,2555.53%
Hispanic122,21215,71412.86%
Black68,9588,77612.73%
Other39,2726,30016.04%
Asian38,8404,00310.31%
Multiple28,5702,3438.20%
Native4,38945210.30%
Islander1,4481439.88%

8.09%

Overall Poverty Rate

7.35%

Male Poverty Rate

8.81%

Female Poverty Rate

Poverty in Arapahoe County, Colorado

The race most likely to be in poverty in Arapahoe County, Colorado is Other, with 16.04% below the poverty level.

The race least likely to be in poverty in Arapahoe County, Colorado is White, with 5.53% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 1.84%. Among those working part-time, it was 11.57%, and for those that did not work, the poverty rate was 14.96%.

Arapahoe County, Colorado Poverty

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Name Poverty
Less Than 9th Grade18.03%
High School9.60%
Some College6.96%
Bachelors or Greater3.82%

Arapahoe County, Colorado Poverty Rate by Education

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Name Poverty
Female Unemployed20.09%
Male Unemployed17.54%
Female Employed4.90%
Male Employed3.80%

Arapahoe County, Colorado Poverty Rate by Employment Status and Sex

Arapahoe County, Colorado Income by Household Type

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Name Median Mean
Households$77,469$104,990
Families$94,344$123,695
Married Families$108,479$140,513
Non Families$49,923$64,787
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Income by Household Type

Arapahoe County, Colorado Marital Status

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Marriage Rates

50.1%

Overall Marriage Rate

51.3%

Male Marriage Rate

48.9%

Female Marriage Rate

Arapahoe County, Colorado Married by Age and Sex

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Arapahoe County, Colorado Marriage

The age group where males are most likely to be married is Over 65, while the female age group most likely to be married is 35-44.

Arapahoe County, Colorado Marital Status by Race

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Arapahoe County, Colorado Marital Status

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39,149

Number of Veterans

34,733

Male Veterans

4,416

Female Veterans

War Veterans
Vietnam13,224
First Gulf War10,684
Second Gulf War9,840
Korea2,141
World War II1,124

Arapahoe County, Colorado Veterans by War

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Age Group Veterans
35 to 5411,123
65 to 748,945
75+7,337
55 to 647,054
18 to 344,690

Arapahoe County, Colorado Veterans by Age

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Name Veterans % of Total
White31,2018.62%
Black4,9729.74%
Hispanic3,1763.96%
2+ Races1,0466.98%
Asian8442.82%
Other Race6272.36%
Native American39211.57%
Islander676.61%

Arapahoe County, Colorado Veterans by Race

Arapahoe County, Colorado Veterans by Education

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4.04%

Veteran Poverty Rate

22.32%

Veteran Disability Rate

Arapahoe County, Colorado Veterans by Education

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71.6%

Labor Force Participation

68.3%

Employment Rate

4.1%

Unemployment Rate

Arapahoe County, Colorado Employment by Age

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Arapahoe County, Colorado Employment by Race

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Arapahoe County, Colorado Employment by Education

Origin of Non-Citizens

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Non citizens include legal permanent residents (green card holders), international students, temporary workers, humanitarian migrants, and illegal immigrants.

Origin of Naturalized Citizens

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41.11%

Born in Arapahoe County, Colorado

84.86%

Native Born

15.14%

Foreign Born

8.42%

Non Citizen

6.72%

Naturalized

Place of Birth

84.86% of Arapahoe County, Colorado residents were born in the United States, with 41.11% having been born in Colorado. 8.42% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Latin America.

Arapahoe County, Colorado Place of Birth

  1. US Census City/Town Population estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
  2. Population of States and Counties of the United States: 1790 - 1990

Sources