Property Intelligence Report — Castle Rock, Colorado

Castle Rock has experienced explosive growth over the past decade, and the numbers tell the story. With a population that's cracked 360,000, this is no longer a sleepy suburb—it's a genuine mid-sized city with the infrastructure and amenities to match. The median household income of $139,010 places it firmly in the upper-middle class, and you'll see that reflected in both the community's composition and the homes themselves, where the median value sits around $635,100. Nearly 78 percent of residents own their homes, which speaks to the stability and investment-mindedness of the area.

The demographic profile skews educated and professional, with 57 percent holding a bachelor's degree or higher. You're looking at a community of families and established professionals, not transient renters. One practical consideration for buyers: Castle Rock sits in EPA Radon Zone 1, meaning elevated radon levels are common in the area. Any property purchase should include radon testing and mitigation if needed—it's a manageable issue, but it's a conversation worth having with your inspector and realtor. Earthquake risk is genuinely minimal, so you won't lose sleep over seismic activity. Overall, Castle Rock offers the appeal of suburban stability with the resources of a growing city, though you'll pay accordingly for that combination.