Overview
8,307
Total Population
41.5
Median age
51.91%
Female population %
92.6:100
Gender ratio (M:F)
40-44 years
Largest age group
51.1
Total dependency ratio
White
Largest racial group
24
Hispanic population
Sources: U.S. Census Bureau, American Community Survey (ACS) 2021
TABLE OF CONTENTS
Age
Castle Shannon's population is old compared to the rest of the country:
- The median age in Castle Shannon is 41.5, compared to 38.8 nationwide, according to the American Community Survey 2017 - 2021 5 Year estimates.
- Castle Shannon's population under 18 was 15.79%, compared to the 22.51% nationwide.
- Castle Shannon's elderly or the senior population (over 65 age) was 18.79% as compared to 16.04% nationwide.
- Of the total population in Castle Shannon, 15.05% were under the age of 15, 16.90% aged 15 to 29, 49.26% aged 30 to 64, 17.21% aged 65 to 84, and 1.58% were 85 years of age and older.

Read more about Castle Shannon, PA population by age ➔
Gender
There are 317 more females than males in Castle Shannon:
- The female percentage in the USA is 50.50% while the male percentage is 49.50%, compared to 51.91% females and 48.09% males in Castle Shannon, PA.
- The Castle Shannon, PA gender ratio is 92.6:100 i.e. 92.6 men to 100 women (0.926).
- For male population, the largest age group is 40-44 years with a population of 450.
- For the female population, the largest age group is 25-29 years with a population of 521.

Read more about Castle Shannon, PA population by gender ➔
Race / Ethnicity
Castle Shannon's population has become increasingly diverse:
- Racial distribution of Castle Shannon population: 85.12% are White, 3.65% are Black or African American, 4.44% are Asian, 0.18% are some other race and 6.61% are multiracial.
- Castle Shannon's racial breakdown clearly shows that there is an absolute majority of White population in the borough.
- By ethnicity, 24 is Hispanic or Latino (of any race), and 8,067 (97.11% of the total population) is Non-Hispanic.
- The largest racial group in Castle Shannon is White with a population of 7,071 (85.12% of the total population).

Read more about Castle Shannon, PA population by race ➔
Year by year
Castle Shannon's population has already reached its peak and is showing a trend of decline:
- The peak population was 8,571 in the year 2000
- From 2000 to 2010, Castle Shannon's population decreased by 254 (2.96%), as compared to the national growth of 9.63%.
- From 2010 to 2020, Castle Shannon's population decreased by 29 (0.35%), 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 Shannon's population was lowest in year 2009 at 8,090.

Read more about Castle Shannon, PA population by year ➔
References
- U.S. Census Bureau American Community Survey (ACS) 2017-2021 5-Year Estimates
- U.S. Census Bureau Population Estimates Population Estimates Program (PEP)