Arapahoe County, Colorado Population 2024

655,853

Arapahoe County, Colorado's estimated 2024 population is 655,853 with a growth rate of -0.03% in the past year according to the most recent United States census data. Arapahoe County, Colorado is the 3rd largest county in Colorado. The 2010 population was 575,124 and has seen a growth of 14.04% since that time.

Note: data after 2022 is projected based on recent change

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Year
Population
Growth
Growth Rate
2029654,813-208-0.03%
2028655,021-208-0.03%
2027655,229-208-0.03%
2026655,437-208-0.03%
2025655,645-208-0.03%
2024655,853-208-0.03%
2023656,061-208-0.03%
2022656,269-586-0.09%
2021656,8551,5830.24%
2020655,272-779-0.12%
2019656,0513,6560.56%
2018652,3957,3151.13%
2017645,0805,4750.86%
2016639,6057,9171.25%
2015631,68812,0071.94%
2014619,68110,5921.74%
2013609,08912,0372.02%
2012597,05210,6191.81%
2011586,43311,3091.97%
2010575,12400%
1990391,51197,89033.34%
1980293,621131,47981.09%
1970162,14248,71642.95%
1960113,42661,301117.6%
195052,12519,97562.13%
194032,1509,50341.96%
193022,6478,88164.51%
192013,7663,50334.13%
191010,263-142,754-93.29%
1900153,01720,88215.8%
1890132,13593,491241.93%
188038,64431,815465.88%
18706,829-647,984-98.96%
showing: 33 rows
2024 Growth Rate
-0.03% (-208)
County Website
Arapahoe County
County Seat
2020 Population
655,272
Area
798 mi²
Density
822 people/mi²
Growth Since 2020
0.09% (581)
Founded
November 1, 1861

Arapahoe County, Colorado Population 2024

Population by Race

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Race
Population
Percentage (of total)
White422,33064.53%
Two or more races72,28311.04%
Black or African American71,81510.97%
Other race40,6826.22%
Asian40,2106.14%
Native American5,5200.84%
Native Hawaiian or Pacific Islander1,6130.25%

White

Two or more races

Black or African American

Other race

Asian

Native American

Native Hawaiian or Pacific Islander

Arapahoe County, Colorado Population by Race

Arapahoe County, Colorado Population Pyramid 2024

Arapahoe County, Colorado Median Age

37.1

Total

36.2

Male

38.1

Female

Arapahoe County, Colorado Adults

There are 504,727 adults, (89,962 of whom are seniors) in Arapahoe County, Colorado.

Arapahoe County, Colorado Age Dependency

57.8

Age Dependency Ratio

21.7

Old Age Dependency Ratio

36.1

Child Dependency Ratio

Arapahoe County, Colorado Sex Ratio

Female327,29750.01%
Male327,15649.99%

Arapahoe County, Colorado Population by Age

Arapahoe County, Colorado Renter vs Owner Occupied by Household Type

Household Type
Count
Average Size
Owner
Renter
All250,7512.5964.935.1
Married122,3523.2680.919.1
Non Family89,1701.3148.851.2
Female26,9663.4450.149.9
Male12,2633.2955.144.9

3.2

Average Family Size

2.59

Average Household Size

64.9%

Rate of Home Ownership

Married

Male

Female

NonFamily

owner

renter

Arapahoe County, Colorado Households and Families

Male

Female

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Education Attained
Count
Percentage
Less Than 9th Grade16,1273.58%
9th to 12th Grade19,0304.23%
High School Graduate87,27019.39%
Some College87,56419.46%
Associates Degree37,9068.42%
Bachelors Degree125,32227.84%
Graduate Degree76,86217.08%

Less Than 9th Grade

9th to 12th Grade

High School Graduate

Some College

Associates Degree

Bachelors Degree

Graduate Degree

Arapahoe County, Colorado Educational Attainment by Sex (over 25)

Arapahoe County, Colorado Educational Attainment by Race

High School Graduation Rate

Bachelors Rate

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Race
Total
High School
Bachelors
White286,838279,232153,162
Hispanic72,11754,71214,841
Black46,59242,05713,050
2+ Races35,02430,10411,272
Asian28,57123,59014,561
Other Race24,61616,8093,951
Native American3,7513,118724
Islander996903196

The highest rate of high school graduation is among white people with a rate of 97.35%.

The highest rate of bachelors degrees is among white people with a rate of 53.4%.

Arapahoe County, Colorado Educational Attainment by Race

All

Male

Female

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Name
Average
Male
Female
Overall$55,352$62,904$47,118
Less Than 9th Grade$34,032$41,759$26,236
High School Graduate$41,339$45,770$36,247
Some College$47,920$55,468$41,322
Bachelors Degree$69,803$83,025$58,513
Graduate Degree$86,171$103,015$75,161

$55,352

Average Earnings

$62,904

Average Male

$47,118

Average Female

Arapahoe County, Colorado Earnings by Educational Attainment

Arapahoe County, Colorado Language by Age

Only English

Spanish

Other Indo-European Languages

Asian and Pacific Island Languages

Other Languages

Arapahoe County, Colorado Language

77.06% of Arapahoe County, Colorado residents speak only English, while 22.94% speak other languages. The non-English language spoken by the largest group is Spanish, which is spoken by 12.09% of the population.

Arapahoe County, Colorado Language

Arapahoe County, Colorado Poverty by Race

rate

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Name
Total
In Poverty
Poverty Rate
White374,54520,9675.6%
Hispanic131,06614,61111.15%
Black70,7509,99414.13%
Multiple71,8526,9129.62%
Other40,2825,83714.49%
Asian39,9833,3478.37%
Native5,37969112.85%
Islander1,587855.36%

7.98%

Overall Poverty Rate

7.46%

Male Poverty Rate

8.5%

Female Poverty Rate

Poverty in Arapahoe County, Colorado

The race most likely to be in poverty in Arapahoe County, Colorado is Other, with 14.49% below the poverty level.

The race least likely to be in poverty in Arapahoe County, Colorado is Islander, with 5.36% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 1.68%. Among those working part-time, it was 10.71%, and for those that did not work, the poverty rate was 15.05%.

Arapahoe County, Colorado Poverty

rate

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Rate
Poverty
Less Than 9th Grade16.38%
High School10.51%
Some College6.99%
Bachelors or Greater3.77%

Arapahoe County, Colorado Poverty Rate by Education

rate

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Rate
Poverty
Female Unemployed19.5%
Male Unemployed17.02%
Female Employed4.41%
Male Employed3.75%

Arapahoe County, Colorado Poverty Rate by Employment Status and Sex

Arapahoe County, Colorado Income by Household Type

Households

Families

MarriedFamilies

NonFamilies

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Name
Median
Mean
Households$92,292$126,187
Families$114,803$149,945
Married Families$131,245$170,382
Non Families$58,131$77,392

mean

median

Income by Household Type

Arapahoe County, Colorado Marital Status

Married

Widowed

Divorced

Separated

NeverMarried

Marriage Rates

50.0%

Overall Marriage Rate

51.6%

Male Marriage Rate

48.5%

Female Marriage Rate

Arapahoe County, Colorado Married by Age and Sex

male

female

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

Married

Widowed

Divorced

Separated

NeverMarried

Arapahoe County, Colorado Marital Status

Second Gulf War

First Gulf War

Vietnam

Korea

World War II

36,513

Number of Veterans

32,574

Male Veterans

3,939

Female Veterans

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War
Veterans
Vietnam11,406
Second Gulf War10,051
First Gulf War9,705
Korea1,968
World War II455

Arapahoe County, Colorado Veterans by War

count

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Age Group
Veterans
35 to 549,964
65 to 748,359
75+7,359
55 to 646,765
18 to 344,066

Arapahoe County, Colorado Veterans by Age

count

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Name
Veterans
% of Total
White27,5468.11%
Black4,7158.87%
Hispanic3,2513.7%
2+ Races1,7914.19%
Other Race1,1383.82%
Asian9583%
Native American2626.31%
Islander1039.21%

Arapahoe County, Colorado Veterans by Race

Arapahoe County, Colorado Veterans by Education

Less Than 9th Grade

High School Graduate

Some College

Bachelors or Greater

5.5%

Veteran Poverty Rate

24.74%

Veteran Disability Rate

Arapahoe County, Colorado Veterans by Education

LaborForceParticipation

71.4%

Labor Force Participation

67.8%

Employment Rate

4.6%

Unemployment Rate

Arapahoe County, Colorado Employment by Age

LaborForceParticipation

Arapahoe County, Colorado Employment by Race

LaborForceParticipation

Arapahoe County, Colorado Employment by Education

Origin of Non-Citizens

Europe

Asia

Africa

Oceania

Latin America

North America

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

Origin of Naturalized Citizens

Europe

Asia

Africa

Oceania

Latin America

North America

40.05%

Born in Arapahoe County, Colorado

84.42%

Native Born

15.58%

Foreign Born

7.92%

Non Citizen

7.66%

Naturalized

Place of Birth

84.42% of Arapahoe County, Colorado residents were born in the United States, with 40.05% having been born in Colorado. 7.92% 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

Sources