Castle Rock, CO vs Thornton, CO

Thornton is moderately more affordable than Castle Rock, with a 11.8% lower cost of living index. Castle Rock scores 147 compared to 131 for Thornton, where the US average is 100. This difference means residents of Castle Rock can expect to pay noticeably more for everyday expenses, housing, and services.

On the housing front, median rent in Castle Rock is $1,946/month compared to $1,810/month in Thornton — a 8% difference. Home values follow the same pattern: Thornton is more affordable at $482,200 median vs $621,700.

Median household income in Castle Rock is $143,031 compared to $100,985 in Thornton (+41.6%). While Castle Rock is more expensive, its higher salaries more than compensate — residents there may actually end up with more disposable income. Looking at affordability, residents of Castle Rock spend roughly 16.3% of their income on rent, less than the 21.5% in Thornton.