Eureka 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 895 Eureka city, SD population, the 85yrs and Over age group constituted the highest percentage of the population (11.73%), followed by the 75-79yrs age group (8.72%), and the 5-9yrs age group (8.60%).

In the case of age cohorts, Adults (18-64yrs) constituted the highest percentage of the total population (44.80%), followed by Seniors (65yrs and Over) (38.88%), and Children (0-17yrs) (16.31%).

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.
Eureka city, SD Percentages of Population By Age Group in 2021
85yrs and Over
75-79yrs
5-9yrs
55-59yrs
65-69yrs
15-19yrs
20-24yrs
70-74yrs
80-84yrs
30-34yrs
Eureka city, SD Percentages of Population By Age Cohort in 2021
Adults (18-64yrs)
Seniors (65yrs and Over)
Children (0-17yrs)
Eureka city, SD Population By Age Group in 2021
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Age Group Number of People % of Total
85yrs and Over 105 11.73
75-79yrs 78 8.72
5-9yrs 77 8.60
55-59yrs 76 8.49
65-69yrs 62 6.93
15-19yrs 58 6.48
20-24yrs 53 5.92
70-74yrs 52 5.81
80-84yrs 51 5.70
30-34yrs 50 5.59
25-29yrs 47 5.25
50-54yrs 46 5.14
60-64yrs 36 4.02
10-14yrs 25 2.79
35-39yrs 24 2.68
Under 5yrs 23 2.57
40-44yrs 21 2.35
45-49yrs 11 1.23
Eureka city, SD Population By Age Cohort in 2021
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Age Cohort Number of People % of Total
Adults (18-64yrs) 401 44.80
Seniors (65yrs and Over) 348 38.88
Children (0-17yrs) 146 16.31