Castle Rock reaches 83,815 residents in the latest Census estimate
The Census Bureau estimates that Castle Rock, Colorado, had 83,815 residents on July 1, 2025. That represents 14.6% growth from the revised April 2020 estimates base. These are municipal figures, not the population of the surrounding metropolitan area.
The Census Bureau estimates that Castle Rock, Colorado, had 83,815 residents on July 1, 2025. That represents 14.6% growth from the revised April 2020 estimates base. These are municipal figures, not the population of the surrounding metropolitan area.
The same Census profile reports median household income of $145,197, based on the 2020–2024 American Community Survey and expressed in 2024 dollars. Income and population come from different statistical programs and reference periods; they should not be treated as measurements taken on the same day.
For residents, the useful next question is how local services respond to change. School planning, road capacity, recreation and development proposals deserve attention, but population growth alone does not prove that a particular facility is overcrowded or that a project is necessary. Those questions require local records.
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These figures provide a baseline for following Castle Rock's next chapter. They are historical estimates available at launch, not an October 2026 headcount or a projection of future growth.
Sources and further information
Prepared with AI assistance. Source information checked October 17, 2026; schedules and availability may change.
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