Cost of living in Castle Rock, CO — Housing, Rent & Index

The median home value in Castle Rock, CO is $676,277 as of 2026-04. That places Castle Rock above the US average for housing cost, with a cost index of approximately 191 versus a national baseline of 100.

Over the past 12 months, the median home value in Castle Rock has fallen 2.2%, and over the past five years it has averaged +3.3% annual growth. The current price sits -7.5% from its 5-year peak in 2022-06.

Renters pay a median of $2,258 per month in Castle Rock. Rents have changed -0.4% over the last year and averaged +3.6% per year over five years.

Beyond housing, day-to-day costs in Castle Rock are shaped by state and local taxes, utility rates, transportation, and groceries. This page focuses on the housing component, which is the largest single line in most household budgets and the easiest to compare across cities using consistent national data.