Dorchester 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 32.49K Dorchester County, MD population, the 55-59yrs age group constituted the highest percentage of the total population (8.43%), followed by the 60-64yrs age group (7.12%), and the 70-74yrs age group (6.78%).

In the case of age cohorts, Adults (18-64yrs) constituted the highest percentage of the total population (57.24%), followed by Seniors (65yrs and Over) (21.61%), and Children (0-17yrs) (21.15%).

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.

Dorchester County, MD Percentages of Population By Age Group in 2021
55-59yrs
60-64yrs
70-74yrs
50-54yrs
10-14yrs
15-19yrs
30-34yrs
65-69yrs
25-29yrs
45-49yrs
Dorchester County, MD Percentages of Population By Age Cohort in 2021
Adults (18-64yrs)
Seniors (65yrs and Over)
Children (0-17yrs)
Dorchester County, MD Population By Age Group in 2021
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Age Group Number of People % of Total
55-59yrs 2739 8.43
60-64yrs 2313 7.12
70-74yrs 2203 6.78
50-54yrs 2132 6.56
10-14yrs 2113 6.50
15-19yrs 1966 6.05
30-34yrs 1917 5.90
65-69yrs 1915 5.90
25-29yrs 1865 5.74
45-49yrs 1854 5.71
40-44yrs 1753 5.40
20-24yrs 1744 5.37
Under 5yrs 1726 5.31
35-39yrs 1675 5.16
5-9yrs 1669 5.14
75-79yrs 1340 4.13
80-84yrs 993 3.06
85yrs and Over 569 1.75
Dorchester County, MD Population By Age Cohort in 2021
0 of 0
Age Cohort Number of People % of Total
Adults (18-64yrs) 18594 57.24
Seniors (65yrs and Over) 7020 21.61
Children (0-17yrs) 6872 21.15