Castle Rock, CO Population

Overview

71,037

Total Population

35.7

Median age

50.37%

Female population %

98.5:100

Gender ratio (M:F)

40-44 years

Largest age group

48.9

Total dependency ratio

White

Largest racial group

7,844

Hispanic population

Sources: U.S. Census Bureau, American Community Survey (ACS) 2021

TABLE OF CONTENTS

Age

Castle Rock's population is young compared to the rest of the country:

The median age in Castle Rock is 35.7, compared to 38.8 nationwide, according to the American Community Survey 2017 - 2021 5 Year estimates.
Castle Rock's population under 18 was 28.04%, compared to the 22.51% nationwide.
Castle Rock's elderly or the senior population (over 65 age) was 10.10% as compared to 16.04% nationwide.
Of the total population in Castle Rock, 22.72% were under the age of 15, 17.99% aged 15 to 29, 49.19% aged 30 to 64, 9.09% aged 65 to 84, and 1.01% were 85 years of age and older.

There are 527 more females than males in Castle Rock:

The female percentage in the USA is 50.50% while the male percentage is 49.50%, compared to 50.37% females and 49.63% males in Castle Rock, CO.
The Castle Rock, CO gender ratio is 98.5:100 i.e. 98.5 men to 100 women (0.985).
For male population, the largest age group is 45-49 years with a population of 3,012.
For the female population, the largest age group is 30-34 years with a population of 3,147.

Castle Rock's population has become increasingly diverse:

Racial distribution of Castle Rock population: 88.17% are White, 0.69% are Black or African American, 0.31% are American Indian and Alaska Native, 2.05% are Asian, 0.16% are Native Hawaiian and other Pacific Islander, 2.51% are some other race and 6.12% are multiracial.
Castle Rock's racial breakdown clearly shows that there is an absolute majority of White population in the town.
By ethnicity, 7,844 is Hispanic or Latino (of any race), and 63,193 (88.96% of the total population) is Non-Hispanic.
The largest racial group in Castle Rock is White with a population of 62,63 (88.17% of the total population).

Castle Rock's population has not reached its peak yet and is showing a trend of further growth:

The peak population was 80,191 in the year 2022
From 2000 to 2010, Castle Rock's population increased by 27,893 (133.46%), as compared to the national growth of 9.63%.
From 2010 to 2020, Castle Rock's population increased by 25,088 (51.42%), according to Census Bureau's Population Estimates Program. For the same period, the rate of growth for the United States was 7.17%.
Between the year 2000 and 2022, Castle Rock's population was lowest in year 2000 at 20,900.