Castle Rock Flag

Castle Rock

County:
Douglas County
County Seat:
Yes
Area (mi²):
34.742
State:
Colorado

Castle Rock is a town located in Douglas County, Colorado. Castle Rock has a 2026 population of 87,875. It is also the county seat of Douglas County. Castle Rock is currently growing at a rate of 2.72% annually and its population has increased by 18.93% since the most recent census, which recorded a population of 73,888 in 2020.

The median household income in Castle Rock is $145,197 with a poverty rate of 3.81%. The median age in Castle Rock is 36.5 years: 36.5 years for males, and 36.4 years for females. For every 100 females there are 98.0 males.

87.9K
Total Population
2,529
Density (mi²)
2.3K 2.72%
Growth

Castle Rock Population

Castle Rock Population

Data after 2023 is projected based on recent change

Year ↓
Population
Growth
Annual Change
202687,8752,3312.72%
202585,5442,3312.8%
202483,2131,5591.91%
202381,6541,4191.77%
202280,2353,5784.67%
202176,6573,4994.78%
202073,8886,1509.08%
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%
201048,7935621.17%
200020,22411,516132.25%
19908,7084,787122.09%
19803,9212,421161.4%
19701,50030025%
19601,20050071.43%
195070010016.67%
194060000%

Median Age

Overall: 36.5 years
Female: 36.4 years
Male: 36.5 years

Castle Rock Adults

There are 58,503 adults, (9,035 of whom are seniors) in Castle Rock.

Sex Ratio

Female: 39,960 (50.5%)
Male: 39,163 (49.5%)

Demographics

The racial composition of Castle Rock includes 81.19% White, and smaller percentages for other race, Asian, Black or African American, Native American, Native Hawaiian or Pacific Islander and multiracial populations.

Population by Race

Race
Population ↓
Percentage (of total)
White64,23781.19%
Two or more races9,39211.87%
Other race2,3682.99%
Asian2,0362.57%
Black or African American6510.82%
Native American3500.44%
Native Hawaiian or Pacific Islander890.11%
Race
Population ↓
Percentage (of total)
Two or more races4,4125.58%
White2,6753.38%
Other race1,8242.31%
Native American2440.31%
Black or African American510.06%
Asian280.04%
Race
Population ↓
Percentage (of total)
White61,56277.81%
Two or more races4,9806.29%
Asian2,0082.54%
Black or African American6000.76%
Other race5440.69%
Native American1060.13%
Native Hawaiian or Pacific Islander890.11%

Castle Rock Marital Status

Economics and Income Statistics

Castle Rock 's average per capita income is $81,556. Household income levels show a median of $145,197. The poverty rate stands at 3.81%.

Families: A family includes the owner or renter of the home along with everyone related to them - whether through birth, marriage, or adoption. This includes relatives like spouses, children, parents, siblings, grandparents, and any other family members.
Households: A household includes all the people who occupy a housing unit (such as a house or apartment) as their usual place of residence.
Non Families: A nonfamily household is either someone living alone or when the owner/renter lives with people they aren't related to, like roommates.
Name
Median ↓
Mean
Married Families$176,240-
Families$162,895$194,168
Households$145,197$171,148
Non Families$75,709$92,640

$81,556

Average Income

$145,197

Median Household Income

3.81%

Poverty Rate

Nearby Cities

Sources

  1. US Census State Population Estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
  2. US Census County Population Estimates - Most recent county estimates from the Census Bureau's Population Estimates Program
  3. American Community Survey (2009 - 2013)
  4. Census QuickFacts
  5. Historical Populations of States and Counties (1790 - 1990)