Castle Rock, Colorado Population 2020

70,687

Castle Rock is a city located in Colorado. With a 2020 population of 70,687, it is the 16th largest city in Colorado and the 525th largest city in the United States. Castle Rock is currently growing at a rate of 4.32% annually and its population has increased by 46.56% since the most recent census, which recorded a population of 48,231 in 2010. Spanning over 34 miles, Castle Rock has a population density of 2,061 people per square mile.

The average household income in Castle Rock is $122,417 with a poverty rate of 4.34%. The median rental costs in recent years comes to $1,460 per month, and the median house value is $391,100. The median age in Castle Rock is 35.2 years, 34.3 years for males, and 36 years for females. For every 100 females there are 99.3 males.

Castle Rock Demographics

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

  • White: 92.00%
  • Two or more races: 2.67%
  • Other race: 2.16%
  • Asian: 1.52%
  • Black or African American: 1.17%
  • Native American: 0.36%
  • Native Hawaiian or Pacific Islander: 0.11%
The current population of Castle Rock, Colorado is 70,687, based on our projections of the latest US Census estimates. The US Census estimates the 2018 population at 64,827.The last official US Census in 2010 recorded the population at 48,231.

Castle Rock, Colorado Population 2020

Population by Race

Race Population Percentage
White54,90792.00%
Two or More Races1,5942.67%
Some Other Race1,2922.16%
Asian9081.52%
Black or African American6991.17%
American Indian and Alaska Native2170.36%
Native Hawaiian and Other Pacific Islander630.11%

Castle Rock Population Pyramid 2020

Castle Rock Median Age

35.2


Total

34.3


Male

36


Female

Castle Rock Adults

There are 42,083 adults, (5,670 of whom are seniors) in Castle Rock.

Castle Rock Age Dependency

63.9

Age Dependency Ratio

15.6

Old Age Dependency Ratio

48.3

Child Dependency Ratio

Castle Rock Sex Ratio

Female

29,943

50.17%

Male

29,737

49.83%

Castle Rock Households and Families

Castle Rock Renter vs Owner Occupied by Household Type

Castle Rock Household Types

Type Owner Renter
Married87.8%12.2%
All77.3%22.7%
Male59.9%40.1%
Female59%41%
Non Family56.3%43.7%

77.3%

Rate of Home Ownership

Type Count Average Size Owned
All20,5112.8877.3
Married13,4523.487.8
Non Family4,5551.3156.3
Female1,5262.959
Male9783.0359.9

3.27

Average Family Size

2.88

Average Household Size

4.4%

Unmarried (Opposite Sex)

0.4%

Unmarried (Same Sex)

Castle Rock Education

Education Attained Count Percentage
Less Than 9th Grade2840.76%
9th to 12th Grade6341.69%
High School Graduate5,31514.15%
Some College8,96023.86%
Associates Degree3,94710.51%
Bachelors Degree12,65033.69%
Graduate Degree5,76215.34%

Castle Rock Educational Attainment by Race

Name Total High School Bachelors
White32,16631,64116,116
Hispanic3,5383,1951,450
Other Race881772335
Asian682659350
Multiple Races593582296
Black418391161
Native American142132
Islander474728

The highest rate of high school graduation is among islander people with a rate of 100.00%.

The highest rate of bachelors degrees is among islander people with a rate of 59.57%.

Name Average Male Female
Overall$57,614$71,681$44,252
Less Than High School$29,583$31,583$15,313
High School Grad$35,789$45,660$29,291
Some College$49,768$63,297$37,001
Bachelors Degree$66,523$86,269$49,650
Graduate Degree$77,578$105,553$62,695

$57,614

Average Earnings

$71,681

Average Male

$44,252

Average Female

Castle Rock Language

Castle Rock Language by Age

Castle Rock Language

93.08% of Castle Rock residents speak only English, while 6.92% speak other languages. The non-English language spoken by the largest group is Spanish, which is spoken by 4.75% of the population.

Castle Rock Poverty

Castle Rock Poverty by Race

Name Total In Poverty Poverty Rate
White49,6241,7703.57%
Hispanic6,2885859.30%
Black67314120.95%
Asian894515.70%
Multiple1,565473.00%
Other1,189161.35%
Native180158.33%
Islander6311.59%

4.34%

Overall Poverty Rate

3.82%

Male Poverty Rate

4.85%

Female Poverty Rate

Poverty in Castle Rock

The race most likely to be in poverty in Castle Rock is Black, with 20.95% below the poverty level.

The race least likely to be in poverty in Castle Rock is Other, with 1.35% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 1.05%. Among those working part-time, it was 5.38%, and for those that did not work, the poverty rate was 8.92%.

Name Poverty
Less Than High School17.79%
High School8.42%
Bachelors or Greater2.38%
Some College2.31%
Name Poverty
Female Unemployed8.33%
Male Unemployed5.10%
Female Employed2.75%
Male Employed2.24%

Castle Rock Income

Castle Rock Income by Household Type

Name Median Mean
Households$104,642$122,417
Families$120,036$136,891
Married Families$126,653-
Non Families$52,399$66,434

Castle Rock Marital Status

Castle Rock Marital Status

Marriage Rates

62.1%

Overall Marriage Rate

63.9%

Male Marriage Rate

60.3%

Female Marriage Rate

Castle Rock Married by Age and Sex

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

Castle Rock Veterans

4,114

Number of Veterans

3,467

Male Veterans

647

Female Veterans

War Veterans
First Gulf War1,507
Second Gulf War1,393
Vietnam1,056
Korea223
World War II71
Name Veterans % of Total
White3,7889.75%
Hispanic2435.67%
2 or More14321.83%
Black8716.96%
Other555.28%
Asian223.05%
Indian1913.38%

$Castle Rock Veterans by Education

1.47%

Veteran Poverty Rate

16.02%

Veteran Disability Rate

Castle Rock Employment Status

74.9%

Labor Force Participation

72.3%

Employment Rate

3%

Unemployment Rate

Castle Rock Place of Birth

Origin of Non-Citizens

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

Origin of Naturalized Citizens

38.98%

Born in Colorado

95.35%

Native Born

4.65%

Foreign Born

2.07%

Non Citizen

Place of Birth

95.35% of Castle Rock residents were born in the United States, with 38.98% having been born in Colorado. 2.07% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Latin America.

Year Population Growth Annual Growth Rate
202070,6872,9304.32%
201967,7572,9304.52%
201864,8272,7024.35%
201762,1252,9304.95%
201659,1952,1023.68%
201557,0931,9303.50%
201455,1632,5054.76%
201352,6581,6413.22%
201251,0171,3282.67%
201149,6891,0992.26%
201048,59028,3669.16%
200020,22411,5168.79%
19908,7084,7878.31%
19803,9212,42110.09%
19701,5003002.26%
19601,2005005.54%
19507001001.55%
19406000.00%