Carroll County, MD 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 172.15K Carroll County, MD population, the 55-59yrs age group constituted the highest percentage of the total population (8.03%), followed by the 50-54yrs age group (7.91%), and the 60-64yrs age group (7.19%).

In the case of age cohorts, Adults (18-64yrs) constituted the highest percentage of the total population (61.22%), followed by Children (0-17yrs) (21.94%), and Seniors (65yrs and Over) (16.84%).

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 Maryland counties, and for Maryland.

Carroll County, MD Percentages of Population By Age Group in 2021
55-59yrs
50-54yrs
60-64yrs
15-19yrs
45-49yrs
35-39yrs
10-14yrs
30-34yrs
5-9yrs
20-24yrs
Carroll County, MD Percentages of Population By Age Cohort in 2021
Adults (18-64yrs)
Children (0-17yrs)
Seniors (65yrs and Over)
Carroll County, MD Population By Age Group in 2021
0 of 0
Age Group Number of People % of Total
55-59yrs 13817 8.03
50-54yrs 13619 7.91
60-64yrs 12384 7.19
15-19yrs 11772 6.84
45-49yrs 11192 6.50
35-39yrs 11182 6.50
10-14yrs 11088 6.44
30-34yrs 10149 5.90
5-9yrs 10087 5.86
20-24yrs 10002 5.81
65-69yrs 9624 5.59
40-44yrs 9477 5.51
Under 5yrs 9290 5.40
25-29yrs 9104 5.29
70-74yrs 7615 4.42
75-79yrs 4775 2.77
85yrs and Over 3584 2.08
80-84yrs 3387 1.97
Carroll County, MD Population By Age Cohort in 2021
0 of 0
Age Cohort Number of People % of Total
Adults (18-64yrs) 105396 61.22
Children (0-17yrs) 37767 21.94
Seniors (65yrs and Over) 28985 16.84