What to know before you move: cost, market timing, who it fits.
If you're considering a move to Castle Rock, CO, the most important variables are the local housing market, the cost structure (taxes, insurance, utilities), and how well the city fits your day-to-day life. This page summarizes the housing market read; pair it with the cost of living page for the full picture.
Castle Rock is a city in Douglas County, Colorado, with an estimated population of 83,213. It anchors the Denver-Aurora-Lakewood metro area. The population has grown 3.3% per year on average between 2020 and 2024 — among the faster-growing communities in the state. The median home value in Castle Rock is $676,277 as of 2026-04, down 2.2% over the last 12 months. Over the last five years, home values have averaged +3.3% annual growth (-7.5% from the 5-year peak). Rents in Castle Rock average $2,258 per month, roughly flat year-over-year (-0.4%). The composite momentum score is 56 of 100 (Stable). Conditions are neither hot nor cold, so the local fit matters more than market timing.
Sideways market (-2.2% YoY). No urgency to time the macro trend — focus on the home and neighborhood.
Reasons people move here
- People are voting with their feet: population growing 3.3% per year since 2020 — that's faster than ~80% of US cities.
- The data is the data: Castle Rock has at least 5 years of Zillow tracking, full Census identification, and is included in the 2-criteria momentum score on this page.
Things to know first
- Cooling: -2.2% over the trailing year — momentum has stalled.
- Local nuance: city-level data smooths over neighborhood differences. School zones, HOA rules, and street-level character matter — visit before deciding.
More about Castle Rock
Sources: Zillow ZHVI (home values), Zillow ZORI (rents), US Census ACS + place population. Updated when source agencies publish revisions.