Baltimore city, 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 592.21K Baltimore city, MD population, the 25-29yrs age group constituted the highest percentage of the total population (9.51%), followed by the 30-34yrs age group (9.25%), and the 35-39yrs age group (7.50%).

In the case of age cohorts, Adults (18-64yrs) constituted the highest percentage of the total population (65.35%), followed by Children (0-17yrs) (20.53%), and Seniors (65yrs and Over) (14.12%).

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.

Baltimore city, MD Percentages of Population By Age Group in 2021
25-29yrs
30-34yrs
35-39yrs
20-24yrs
55-59yrs
60-64yrs
Under 5yrs
50-54yrs
15-19yrs
10-14yrs
Baltimore city, MD Percentages of Population By Age Cohort in 2021
Adults (18-64yrs)
Children (0-17yrs)
Seniors (65yrs and Over)
Baltimore city, MD Population By Age Group in 2021
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Age Group Number of People % of Total
25-29yrs 56338 9.51
30-34yrs 54756 9.25
35-39yrs 44433 7.50
20-24yrs 39074 6.60
55-59yrs 37922 6.40
60-64yrs 37705 6.37
Under 5yrs 36513 6.17
50-54yrs 35303 5.96
15-19yrs 35077 5.92
10-14yrs 34006 5.74
40-44yrs 32724 5.53
5-9yrs 32613 5.51
45-49yrs 32116 5.42
65-69yrs 29797 5.03
70-74yrs 21508 3.63
75-79yrs 13579 2.29
85yrs and Over 9646 1.63
80-84yrs 9101 1.54
Baltimore city, MD Population By Age Cohort in 2021
0 of 0
Age Cohort Number of People % of Total
Adults (18-64yrs) 387024 65.35
Children (0-17yrs) 121556 20.53
Seniors (65yrs and Over) 83631 14.12