Castle Rock, CO
Population 76,614 · Colorado
About Castle Rock, CO
Castle Rock is a mid-sized city located in Colorado with a population of 76,614 residents according to the latest US Census Bureau American Community Survey data. The median household income is $143,031 per year, which is 90% above the national median of $75,149. The median age of 35.8 years is notably younger the US median age of 38.9 years, indicating a younger, often more dynamic population base.
Housing Market Overview
The housing market in Castle Rock features a median home value of $621,700, which is 154% above the national median of $244,900. This places Castle Rock in a higher-cost housing market, where property demand often outpaces supply. Median monthly rent is $1,946, 67% above the national average of $1,163/month. Of the 27,824 total housing units, 79% are owner-occupied (21,200 units) and 21% are renter-occupied (5,717 units). The high homeownership rate suggests a stable, established residential community.
Economy & Employment
The local economy in Castle Rock shows an unemployment rate of 4.5%, which is near the national rate of 3.7%. The poverty rate stands at 3.8%, below the national average of 12.4%, reflecting generally favorable economic conditions. Workers in Castle Rock have an average one-way commute time of 29.2 minutes.
Education & Demographics
54.9% of Castle Rock residents aged 25 and older hold a bachelor's degree or higher, compared to the national average of 33.7%. This significantly higher educational attainment rate often correlates with access to knowledge-economy jobs and higher household incomes. The community's demographic composition includes 6.3% White, 1.9% Hispanic or Latino, 0.8% Black or African American, and 4.0% Asian residents, with 5.4% of the population being foreign-born.
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.
Compare Castle Rock With Other Cities
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 US Census Bureau American Community Survey estimates. This makes it a mid-sized city in Colorado.
What is the median household income in Castle Rock?
The median household income in Castle Rock, CO is $143,031 per year, which is 90% above the national median of $75,149.
What is the median home value in Castle Rock?
The median home value in Castle Rock, CO is $621,700, which is 154% above the national median of $244,900. The majority of housing units are owner-occupied.
What is the average rent in Castle Rock?
The median monthly rent in Castle Rock, CO is $1,946, which is 67% above the national average of $1,163/month.
What is the unemployment rate in Castle Rock?
The unemployment rate in Castle Rock, CO is 4.5%, compared to the national average of 3.7%. Job seekers may want to research the dominant industries in the area.
Is Castle Rock, CO a good place to live?
Castle Rock offers above-average incomes, a competitive housing market, and growing employment opportunities. With a population of 76,614 and a median age of 35.8, the city appeals to a broad range of residents.
How educated is Castle Rock, CO?
54.9% of residents in Castle Rock aged 25 and older hold a bachelor's degree or higher, compared to the national average of 33.7%. This above-average educational attainment often reflects a knowledge-based local economy.
What is the cost of living in Castle Rock?
Key cost-of-living indicators for Castle Rock, CO: median home value is $621,700 (154% above national), median rent is $1,946/month, and median household income is $143,031. The home-value-to-income ratio is 4.3x, a moderate figure by national standards.
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%. This below-average poverty rate reflects generally favorable economic conditions in the community.
How diverse is Castle Rock, CO?
Castle Rock's population is 6.3% White, 1.9% Hispanic or Latino, 0.8% Black or African American, 4.0% Asian, and 0.8% two or more races. 5.4% of residents are foreign-born.