Ziebach County, South Dakota Age & Gender Statistics (2024)

Total Population

2,377

Median Age

36.7

Male Median

38.3

Female Median

36.1

Ziebach County, South Dakota Population Growth

Population trends in
Figure 1: Annual population growth trend for (2010–2024).

Ziebach County, South Dakota Demographic Trend

Since 2010, the population of has changed by -14.0%%.

-14.0%% Growth

Ziebach County, South Dakota Age & Gender Pyramid

Population pyramid for

Figure 2: Population distribution by age and gender for 2024.


Ziebach County, South Dakota Historical Population Data

YearMedian AgePopulation
202436.72,377
202336.62,410
202234.32,455
202134.52,479
202034.02,767
201933.12,791
201831.62,814
201730.52,837
201628.32,818
201527.52,833
201426.12,837
201326.02,821
201226.32,796
201125.62,780
201025.72,765

Ziebach County, South Dakota Age Group Breakdown (2024)

Age CohortPercentage
Under 57.9%
5–1717.4%
18–2412.9%
25–349.6%
35–5427.2%
55–6413.3%
65+11.7%

Dependency Ratios for Ziebach County, South Dakota

Total Dependency Ratio:
58.7
Youth Dependency:
40.1
Old-Age Dependency:
18.6

The dependency ratio measures dependents (ages 0-17 and 65+) per 100 working-age individuals (ages 18-64).



Age & Gender FAQs for Ziebach County, South Dakota

The median age in Ziebach County, South Dakota is 36.7 years.

According to latest Census data, the total population of Ziebach County, South Dakota is 2,377.

In Ziebach County, South Dakota, seniors (ages 65+) make up 11.7% of the population, while children under 18 represent 17.4%.

Based on historical data since 2010, the population in Ziebach County, South Dakota is aging.
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