Castle Rock, CO Census Data
Key demographic and economic indicators for Castle Rock, Colorado from the 2023 American Community Survey (ACS) 5-year estimates.
Updated: 2026-03-23 · Source: U.S. Census Bureau, ACS 2023
Population
76,614
49.2% male · 50.8% female
Median Age
35.8
2.9 below the national average (38.7 yrs)
Median Household Income
$143,031
64,493.0 above the national average ($78,538)
Bachelor's Degree or Higher
54.9%
19.9 above the national average (35.0%)
HS diploma or higher: 97.4%
Poverty Rate
3.8%
8.6 below the national average (12.4%)
Uninsured: 4.9%
Broadband Access
98.1%
8.4 above the national average (89.7%)
Median Home Value
$621,700
Median rent: $1,946 · 79% owner-occupied
Unemployment Rate
4.5%
Labor force participation: 70.8%
Demographics
Race & Ethnicity
Age Distribution
Commute to Work
Castle Rock, CO Frequently Asked Questions
What is the population of Castle Rock, CO?
The population of Castle Rock, CO is 76,614 according to the 2023 American Community Survey 5-year estimates. The median age is 35.8 years.
What is the median household income in Castle Rock?
The median household income in Castle Rock, CO is $143,031, above the national average of $78,538. Per capita income is $64,394.
What is the poverty rate in Castle Rock?
The poverty rate in Castle Rock, CO is 3.8%, compared to the national average of 12.4%. About 4.9% of residents lack health insurance.
What percentage of Castle Rock residents have a college degree?
54.9% of adults (25+) in Castle Rock hold a bachelor's degree or higher, and 97.4% have at least a high school diploma. The national average for bachelor's degree holders is 35.0%.
What is the median home value in Castle Rock?
The median home value in Castle Rock, CO is $621,700. Median rent is $1,946 per month, with 79% of housing units owner-occupied.
What is the racial makeup of Castle Rock?
Castle Rock's population is 83.5% White, 0.9% Black, 11.3% Hispanic or Latino, and 2.2% Asian (source: 2023 ACS).