Castle Rock demographics profile

StatisticCastle RockColoradoNational
Population density (sq mi)1,5745091
Median age34.636.437.7
Male/Female ratio1.0:11.0:11.0:1
Married (15yrs & older)68%56%55%
Families w/ Kids under 1857%45%43%
Speak English94%83%79%
Speak Spanish4%12%13%
Castle Rock, CO has a population of 53,789 and is the 747th largest city in the United States. The population density is 1,574 per sq mi which is 3060% higher than the Colorado average and 1637% higher than the national average. The median age in Castle Rock is 35 which is approximately 5% lower than the Colorado average of 36. In Castle Rock, 68% of the population over 15 years of age are married, 94% speak English and 4% speak Spanish. 39% of Castle Rock residents were born in Colorado, 55% were born out of state, 2% were born outside of the United States and 5% were foreign born.
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Did you know?

  • The population density in Castle Rock is 3060% higher than Colorado.
  • The median age in Castle Rock is 5% lower than Colorado.
  • In Castle Rock 91.68% of the population is White.
  • In Castle Rock 1.39% of the population is Black or African American.
  • In Castle Rock 1.62% of the population is Asian.

Compare Castle Rock, CO Demographics To Other Cities

Castle Rock population breakdown by race

RaceCastle RockColoradoNational
Black or African American1.39%4.09%12.63%
American Indian0.43%0.94%0.82%
Native Hawaiian0.18%0.14%0.18%
Mixed race3.17%3.43%3.06%
Other race1.53%4.18%4.75%
In Castle Rock, 10.0% of people are of Hispanic or Latino origin.
Please note: Hispanics may be of any race, so also are included in any/all of the applicable race categories above.

Languages spoken

Place of birth by citizenship

Household income distribution

Source of income

Castle Rock age breakdown

Marital status

Age of children in married couples

Source: The Castle Rock, CO demographics data displayed above is derived from the 2016 United States Census Bureau American Community Survey (ACS).
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