Jefferson city, SD 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 667 Jefferson city, SD population, the 25-29yrs age group constituted the highest percentage of the population (12.44%), followed by the 5-9yrs age group (10.20%), and the 15-19yrs age group (10.05%).

In the case of age cohorts, Adults (18-64yrs) constituted the highest percentage of the total population (54.12%), followed by Children (0-17yrs) (27.44%), and Seniors (65yrs and Over) (18.44%).

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 South Dakota cities and places, and for South Dakota.

Data Source: US Census Bureau.

Jefferson city, SD Percentages of Population By Age Group in 2021

25-29yrs

5-9yrs

15-19yrs

65-69yrs

30-34yrs

45-49yrs

70-74yrs

10-14yrs

50-54yrs

55-59yrs

Jefferson city, SD Percentages of Population By Age Cohort in 2021

Adults (18-64yrs)

Children (0-17yrs)

Seniors (65yrs and Over)

Jefferson city, SD Population By Age Group in 2021

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Age Group	Number of People	% of Total
25-29yrs	83	12.44
5-9yrs	68	10.20
15-19yrs	67	10.05
65-69yrs	63	9.45
30-34yrs	56	8.40
45-49yrs	46	6.90
70-74yrs	44	6.60
10-14yrs	43	6.45
50-54yrs	43	6.45
55-59yrs	37	5.55
35-39yrs	36	5.40
40-44yrs	19	2.85
20-24yrs	17	2.55
60-64yrs	16	2.40
Under 5yrs	13	1.95
80-84yrs	9	1.35
85yrs and Over	4	0.60
75-79yrs	3	0.45

Jefferson city, SD Population By Age Cohort in 2021

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Age Cohort	Number of People	% of Total
Adults (18-64yrs)	361	54.12
Children (0-17yrs)	183	27.44
Seniors (65yrs and Over)	123	18.44