Washington city, DC Population By Age Group and Age Cohort in 2021 (ACS-5Yrs)

Updated on July 5, 2024.

Based on the US Census ACS-5Yrs estimates, in 2021, among the 683.15K Washington city, DC population, the 30-34yrs age group constituted the highest percentage of the population (11.47%), followed by the 25-29yrs age group (11.32%), and the 35-39yrs age group (8.91%).

In the case of age cohorts, Adults (18-64yrs) constituted the highest percentage of the total population (69.52%), followed by Children (0-17yrs) (18.30%), and Seniors (65yrs and Over) (12.18%).

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 also see similar information for other District of Columbia cities and places, and for District of Columbia.

Data Source: US Census Bureau.
Washington city, DC Percentages of Population By Age Group in 2021
30-34yrs
25-29yrs
35-39yrs
20-24yrs
40-44yrs
Under 5yrs
45-49yrs
15-19yrs
50-54yrs
55-59yrs
Washington city, DC Percentages of Population By Age Cohort in 2021
Adults (18-64yrs)
Children (0-17yrs)
Seniors (65yrs and Over)
Washington city, DC Population By Age Group in 2021
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Age Group Number of People % of Total
30-34yrs 78357 11.47
25-29yrs 77357 11.32
35-39yrs 60851 8.91
20-24yrs 49311 7.22
40-44yrs 45947 6.73
Under 5yrs 42958 6.29
45-49yrs 37731 5.52
15-19yrs 36641 5.36
50-54yrs 35870 5.25
55-59yrs 35195 5.15
5-9yrs 35069 5.13
60-64yrs 33219 4.86
10-14yrs 31449 4.60
65-69yrs 26924 3.94
70-74yrs 22048 3.23
75-79yrs 14718 2.15
85yrs and Over 10259 1.50
80-84yrs 9250 1.35
Washington city, DC Population By Age Cohort in 2021
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Age Cohort Number of People % of Total
Adults (18-64yrs) 474933 69.52
Children (0-17yrs) 125022 18.30
Seniors (65yrs and Over) 83199 12.18