Smith County, TN 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 19.82K Smith County, TN population, the 55-59yrs age group constituted the highest percentage of the total population (8.28%), followed by the 10-14yrs age group (7.77%), and the 50-54yrs age group (7.41%).

In the case of age cohorts, Adults (18-64yrs) constituted the highest percentage of the total population (60.95%), followed by Children (0-17yrs) (22.62%), and Seniors (65yrs and Over) (16.43%).

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 Tennessee counties, and for Tennessee.

Smith County, TN Percentages of Population By Age Group in 2021
55-59yrs
10-14yrs
50-54yrs
60-64yrs
45-49yrs
35-39yrs
30-34yrs
15-19yrs
25-29yrs
65-69yrs
Smith County, TN Percentages of Population By Age Cohort in 2021
Adults (18-64yrs)
Children (0-17yrs)
Seniors (65yrs and Over)
Smith County, TN Population By Age Group in 2021
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Age Group Number of People % of Total
55-59yrs 1641 8.28
10-14yrs 1539 7.77
50-54yrs 1468 7.41
60-64yrs 1371 6.92
45-49yrs 1344 6.78
35-39yrs 1289 6.50
30-34yrs 1270 6.41
15-19yrs 1250 6.31
25-29yrs 1202 6.07
65-69yrs 1124 5.67
Under 5yrs 1120 5.65
20-24yrs 1073 5.41
5-9yrs 1010 5.10
40-44yrs 987 4.98
70-74yrs 906 4.57
75-79yrs 530 2.67
80-84yrs 406 2.05
85yrs and Over 290 1.46
Smith County, TN Population By Age Cohort in 2021
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Age Cohort Number of People % of Total
Adults (18-64yrs) 12080 60.95
Children (0-17yrs) 4484 22.62
Seniors (65yrs and Over) 3256 16.43