Castle Rock, CO
Population 76,614 · Colorado
About Castle Rock, CO
Castle Rock is a mid-sized city in Colorado with a population of 76,614 residents. The median household income is $143,031 per year, which is above the national average. The median age in Castle Rock is 35.8 years.
Housing in Castle Rock has a median home value of $621,700 and median monthly rent of $1,946. Of the 27,824 total housing units, the majority are owner-occupied, with 21,200 owner-occupied and 5,717 renter-occupied units.
The unemployment rate in Castle Rock is 4.5% and the poverty rate is 3.8%. 54.9% of residents hold a bachelor's degree or higher. The average commute time is 29.2 minutes.
How Castle Rock Ranks in Colorado
Cost of Living in Castle Rock, CO
Compared to national averages, Castle Rock has a median household income of $143,031 (90% above the national median of $75,149). Home values average $621,700, which is 154% above the national median. Monthly rent at $1,946 is 67% above the US average of $1,163. Within Colorado, Castle Rock's income is 62% above the state average of $88,514, and home values are 36% above the state median of $457,127.
Why Live in Castle Rock, CO?
Castle Rock offers a strong local economy with a median household income of $143,031, well above the national average, and a well-educated community where 54.9% of residents hold a bachelor’s degree or higher, and a low poverty rate of 3.8%, better than the national average.
Potential considerations include a competitive housing market where the typical home costs $621,700. However, as a mid-sized city, Castle Rock provides access to a wide range of amenities and services.
Castle Rock has a population of 76,614 with a median age of 35.8 years. Compare Castle Rock with other cities to see how it stacks up, or explore all cities in Colorado.
Similar Cities Near Castle Rock
Cities in Colorado with a similar population size.
| City | Population | Median Income | Home Value | |
|---|---|---|---|---|
| Loveland | 77,350 | $82,592 | $453,100 | Compare |
| Broomfield | 75,110 | $121,025 | $631,600 | Compare |
| Grand Junction | 67,027 | $66,676 | $358,300 | Compare |
| Commerce City | 64,640 | $106,756 | $463,200 | Compare |
| Parker | 60,115 | $129,342 | $613,200 | Compare |
| Longmont | 98,958 | $89,724 | $541,400 | Compare |
| Highlands Ranch | 101,437 | $155,847 | $672,600 | Compare |
| Boulder | 106,274 | $85,364 | $982,600 | Compare |
Demographics
Racial & Ethnic Composition
Economy & Education
Housing
Other Cities in Colorado
Data source: US Census Bureau ACS 5-Year Estimates. Last updated: 2026-04-05.
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Frequently Asked Questions about Castle Rock
What is the population of Castle Rock, CO?
The population of Castle Rock, CO is 76,614 according to the latest Census data.
What is the median household income in Castle Rock?
The median household income in Castle Rock, CO is $143,031 per year.
What is the median home value in Castle Rock?
The median home value in Castle Rock, CO is $621,700.
What is the average rent in Castle Rock?
The median monthly rent in Castle Rock, CO is $1,946.
What is the unemployment rate in Castle Rock?
The unemployment rate in Castle Rock, CO is 4.5%.