Castle Rock, Colorado Population 2024

83,924

Castle Rock is a city located in Douglas County Colorado. Castle Rock has a 2024 population of 83,924. It is also the county seat of Douglas County. Castle Rock is currently growing at a rate of 3.08% annually and its population has increased by 13.59% since the most recent census, which recorded a population of 73,886 in 2020.

The average household income in Castle Rock is $154,734 with a poverty rate of 3.51%. The median age in Castle Rock is 35.8 years: 35.8 years for males, and 35.7 years for females.

Castle Rock Demographics

According to the most recent ACS, the racial composition of Castle Rock was:

  • White: 87.27%
  • Two or more races: 6.98%
  • Other race: 2.25%
  • Asian: 2.19%
  • Black or African American: 0.84%
  • Native American: 0.38%
  • Native Hawaiian or Pacific Islander: 0.08%
Land Area (mi²)
34.7 sq mi
Density (mi²)
2,415.60/sq mi
Growth Since 2020
13.59% (10,038)
The current population of Castle Rock, Colorado is 83,924 based on our projections of the latest US Census estimates (released May 2024). The last official US Census in 2020 recorded the population at 73,886.

Population by Race

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Race
Population
Percentage (of total)
White64,63987.27%
Two or more races5,1686.98%
Other race1,6642.25%
Asian1,6242.19%
Black or African American6250.84%
Native American2830.38%
Native Hawaiian or Pacific Islander620.08%

White

Two or more races

Other race

Asian

Black or African American

Native American

Native Hawaiian or Pacific Islander

Castle Rock Population by Race

Castle Rock Population Pyramid 2024

Castle Rock Median Age

35.8

Total

35.8

Male

35.7

Female

Castle Rock Adults

There are 53,715 adults, (7,682 of whom are seniors) in Castle Rock.

Castle Rock Age Dependency

60.9

Age Dependency Ratio

16.7

Old Age Dependency Ratio

44.2

Child Dependency Ratio

Castle Rock Sex Ratio

Female37,27950.33%
Male36,78649.67%

Castle Rock Population by Age

Castle Rock Renter vs Owner Occupied by Household Type

Household Type
Count
Average Size
Owner
Renter
All25,9462.8378.521.5
Married17,0823.388.211.8
Non Family6,1931.3559.540.5
Female1,6023.0554.745.3
Male1,0693.6169.230.8

3.23

Average Family Size

2.83

Average Household Size

78.5%

Rate of Home Ownership

Married

Male

Female

NonFamily

owner

renter

Castle Rock Households and Families

Male

Female

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Education Attained
Count
Percentage
9th to 12th Grade7401.55%
Associates Degree4,0988.6%
Bachelors Degree17,79937.34%
Graduate Degree7,73316.22%
High School Graduate6,69114.04%
Less Than 9th Grade4751%
Some College10,13421.26%

Less Than 9th Grade

9th to 12th Grade

High School Graduate

Some College

Associates Degree

Bachelors Degree

Graduate Degree

Castle Rock Educational Attainment by Sex (over 25)

Castle Rock Educational Attainment by Race

High School Graduation Rate

Bachelors Rate

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Race
Total
High School
Bachelors
White39,14938,50921,616
Hispanic4,8594,4301,815
2+ Races2,9542,8581,508
Asian1,2321,151738
Other Race1,044853256
Black590560299
Native American14714729
Islander626262

The highest rate of high school graduation is among native american people with a rate of 100%.

The highest rate of bachelors degrees is among islander people with a rate of 100%.

Castle Rock Educational Attainment by Race

All

Male

Female

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Name
Average
Male
Female
Bachelors Degree$86,952$111,807$66,697
Graduate Degree$94,826$113,974$77,992
High School Graduate$46,694$55,167$44,593
Less Than 9th Grade$25,139$34,127$0
Overall$75,156$92,074$56,721
Some College$57,476$75,588$48,608

$75,156

Average Earnings

$92,074

Average Male

$56,721

Average Female

Castle Rock Earnings by Educational Attainment

Castle Rock Language by Age

Only English

Spanish

Other Indo-European Languages

Asian and Pacific Island Languages

Other Languages

Castle Rock Language

92.69% of Castle Rock residents speak only English, while 7.31% speak other languages. The non-English language spoken by the largest group is Spanish, which is spoken by 4.59% of the population.

Castle Rock Language

Castle Rock Poverty by Race

rate

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Name
Total
In Poverty
Poverty Rate
White59,7021,8613.12%
Hispanic7,7614635.97%
Other1,55425716.54%
Multiple5,1341001.95%
Asian1,612996.14%
Black5956711.26%
Native267155.62%

3.51%

Overall Poverty Rate

2.58%

Male Poverty Rate

4.42%

Female Poverty Rate

Poverty in Castle Rock

The race most likely to be in poverty in Castle Rock is Other, with 16.54% below the poverty level.

The race least likely to be in poverty in Castle Rock is Multiple, with 1.95% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 1.19%. Among those working part-time, it was 6.22%, and for those that did not work, the poverty rate was 7.64%.

Castle Rock Poverty

rate

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Rate
Poverty
Less Than 9th Grade16.51%
Some College4.18%
High School3.28%
Bachelors or Greater1.98%

Castle Rock Poverty Rate by Education

rate

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Rate
Poverty
Female Unemployed15.33%
Female Employed3.65%
Male Employed1.48%
Male Unemployed0%

Castle Rock Poverty Rate by Employment Status and Sex

Castle Rock Income by Household Type

Households

Families

MarriedFamilies

NonFamilies

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Name
Median
Mean
Families$150,875$175,628
Households$135,985$154,734
Married Families$163,953$-999,999,999
Non Families$70,270$80,604

mean

median

Income by Household Type

Castle Rock Marital Status

Married

Widowed

Divorced

Separated

NeverMarried

Marriage Rates

61.7%

Overall Marriage Rate

63.2%

Male Marriage Rate

60.2%

Female Marriage Rate

Castle Rock Married by Age and Sex

male

female

Castle Rock Marriage

The age group where males are most likely to be married is 45-54, while the female age group most likely to be married is 35-44.

Castle Rock Marital Status by Race

Married

Widowed

Divorced

Separated

NeverMarried

Castle Rock Marital Status

Second Gulf War

First Gulf War

Vietnam

Korea

World War II

4,598

Number of Veterans

4,082

Male Veterans

516

Female Veterans

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War
Veterans
First Gulf War1,909
Second Gulf War1,829
Vietnam960
Korea121
World War II31

Castle Rock Veterans by War

count

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Age Group
Veterans
35 to 542,077
65 to 74689
75+672
18 to 34593
55 to 64567

Castle Rock Veterans by Age

count

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Name
Veterans
% of Total
White4,0638.65%
Hispanic4688.15%
2+ Races2919.21%
Other Race937.84%
Black7412.54%
Asian564.19%
Native American2110.45%

Castle Rock Veterans by Race

Castle Rock Veterans by Education

Less Than 9th Grade

High School Graduate

Some College

Bachelors or Greater

2.99%

Veteran Poverty Rate

20.83%

Veteran Disability Rate

Castle Rock Veterans by Education

LaborForceParticipation

73.5%

Labor Force Participation

70.1%

Employment Rate

4.2%

Unemployment Rate

Castle Rock Employment by Age

LaborForceParticipation

Castle Rock Employment by Race

LaborForceParticipation

Castle Rock 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

37.84%

Born in Castle Rock

94.72%

Native Born

5.28%

Foreign Born

2.58%

Non Citizen

2.69%

Naturalized

Place of Birth

94.72% of Castle Rock residents were born in the United States, with 37.84% having been born in Colorado. 2.58% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Latin America.

Castle Rock Place of Birth

Note: data after 2022 is projected based on recent change

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Year
Population
Growth
Growth Rate
202996,4732,5102.67%
202893,9632,5102.74%
202791,4532,5092.82%
202688,9442,5102.9%
202586,4342,5102.99%
202483,9242,5093.08%
202381,4151,2661.58%
202280,1493,5044.57%
202176,6452,7593.73%
202073,8866,1489.08%
201967,7382,7334.2%
201865,0052,6874.31%
201762,3182,1243.53%
201660,1941,6252.77%
201558,5692,5704.59%
201455,9992,4934.66%
201353,5061,9143.71%
201251,5921,4972.99%
201150,0951,3022.67%
201048,79300%
200020,22411,516132.25%
19908,7084,787122.09%
19803,9212,421161.4%
19701,50030025%
19601,20050071.43%
195070010016.67%
1940600-95,873-99.38%
showing: 27 rows

Castle Rock Population by Year