Anne Arundel 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 584.06K Anne Arundel County, MD population, the 30-34yrs age group constituted the highest percentage of the total population (7.30%), followed by the 55-59yrs age group (7.07%), and the 50-54yrs age group (6.92%).

In the case of age cohorts, Adults (18-64yrs) constituted the highest percentage of the total population (62.76%), followed by Children (0-17yrs) (22.46%), and Seniors (65yrs and Over) (14.77%).

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.

Data Source: US Census - ACS 5-Year Estimates.

Anne Arundel County, MD Percentages of Population By Age Group in 2021

30-34yrs

55-59yrs

50-54yrs

35-39yrs

40-44yrs

25-29yrs

10-14yrs

45-49yrs

60-64yrs

20-24yrs

Anne Arundel County, MD Percentages of Population By Age Cohort in 2021

Adults (18-64yrs)

Children (0-17yrs)

Seniors (65yrs and Over)

Anne Arundel County, MD Population By Age Group in 2021

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Age Group	Number of People	% of Total
30-34yrs	42615	7.30
55-59yrs	41307	7.07
50-54yrs	40388	6.92
35-39yrs	40238	6.89
40-44yrs	39377	6.74
25-29yrs	38853	6.65
10-14yrs	38054	6.52
45-49yrs	37173	6.37
60-64yrs	36962	6.33
20-24yrs	36374	6.23
5-9yrs	36207	6.20
Under 5yrs	35281	6.04
15-19yrs	34946	5.98
65-69yrs	27169	4.65
70-74yrs	25269	4.33
75-79yrs	15219	2.61
85yrs and Over	9562	1.64
80-84yrs	9070	1.55

Anne Arundel County, MD Population By Age Cohort in 2021

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Age Cohort	Number of People	% of Total
Adults (18-64yrs)	366579	62.76
Children (0-17yrs)	131196	22.46
Seniors (65yrs and Over)	86289	14.77