Castle Rock town, Colorado Demographics & Population 2026

Population Overview

Castle Rock town is a mid-sized community located in Colorado. The total population is 76,614. It ranks as the 16th most populous out of 471 cities and towns in Colorado.

Age Demographics

The median age in Castle Rock town is 35.8 years. This is 5% lower than the state median of 37.5 years.

Economy, Income & Housing

The median household income in Castle Rock town is $143,031. This is 55% higher than the state median of $92,470. Compared to the national median of $78,538, household income here is 82% higher. The poverty rate stands at 3.8%. This is 60% lower than the state poverty rate of 9.4%. This exceptionally low poverty rate indicates strong economic prosperity across the community. The unemployment rate is 4.5%. The median home value is $621,700. Housing costs are 24% higher than the state median of $502,200. The home-value-to-income ratio is 4.3x. 78.8% of occupied housing units are owner-occupied. This homeownership rate is 19% higher than the state average of 66.3%.

Race & Ethnicity

The largest racial or ethnic group in Castle Rock town is White (non-Hispanic), making up 79.4% of the population. Hispanic or Latino residents account for 11.3%. The Black or African American population (0.8%) is well below the state average of 3.8%.

Education

54.9% of residents aged 25 and older hold a bachelor's degree or higher. This is 23% higher than the state rate of 44.7%. Nationally, 35.0% of adults hold at least a bachelor's degree. The high school graduation rate (or equivalent) is 97.4%. Notably, 18.1% of adults hold a graduate or professional degree, indicating a highly educated workforce.

Data Sources & Methodology

All demographic data for Castle Rock town, Colorado is sourced from the U.S. Census Bureau's American Community Survey (ACS) 5-Year Estimates (2019-2023). The ACS collects data from approximately 3.5 million households annually, providing reliable estimates for communities of all sizes. Comparisons are made against Colorado state averages and national averages calculated from the same dataset. Rankings reflect the city's position among all 471 Census-designated places in Colorado. For official data, visit data.census.gov.