South Carolina Population By Age Group and Age Cohort in 2021 (ACS-5Yrs)

Updated on February 28, 2025.

Based on the US Census ACS-5Yrs estimates, in 2021, among the 5.08M South Carolina population, the 55-59yrs age group constituted the highest percentage of the total population (6.74%), followed by the 60-64yrs age group (6.72%), and the 25-29yrs age group (6.61%).

In the case of age cohorts, Adults (18-64yrs) constituted the highest percentage of the total population (60.40%), followed by Children (0-17yrs) (21.85%), and Seniors (65yrs and Over) (17.75%).

The first and second charts below shows the percentage of the population by age group and age cohort respectively. The table below also shows the number and percentages for each age group and age cohort.

You can see similar information for other states, and the United States.

South Carolina Percentages of Population By Age Group in 2021
55-59yrs
6.74%
60-64yrs
6.72%
25-29yrs
6.61%
15-19yrs
6.52%
10-14yrs
6.41%
30-34yrs
6.40%
50-54yrs
6.39%
20-24yrs
6.36%
35-39yrs
6.27%
45-49yrs
6.17%
South Carolina Percentages of Population By Age Cohort in 2021
Adults (18-64yrs)
60.40%
Children (0-17yrs)
21.85%
Seniors (65yrs and Over)
17.75%
South Carolina Population By Age Group in 2021
Age Group
Number of People
% of Total
55-59yrs 342,145 6.74
60-64yrs 341,401 6.72
25-29yrs 335,728 6.61
15-19yrs 330,915 6.52
10-14yrs 325,370 6.41
30-34yrs 324,872 6.40
50-54yrs 324,587 6.39
20-24yrs 322,989 6.36
35-39yrs 318,581 6.27
45-49yrs 313,498 6.17
5-9yrs 306,986 6.04
65-69yrs 306,131 6.03
40-44yrs 304,862 6.00
Under 5yrs 285,472 5.62
70-74yrs 255,167 5.02
75-79yrs 159,540 3.14
80-84yrs 94,610 1.86
85yrs and Over 86,049 1.69
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South Carolina Population By Age Cohort in 2021
Age Cohort
Number of People
% of Total
Adults (18-64yrs) 3,067,603 60.40
Children (0-17yrs) 1,109,803 21.85
Seniors (65yrs and Over) 901,497 17.75
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