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

Total Population

4,344

Median Age

42.5

Male Median

40.6

Female Median

45.1

Marshall County, South Dakota Population Growth

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

Marshall County, South Dakota Demographic Trend

Since 2010, the population of has changed by -5.9%%.

-5.9%% Growth

Marshall County, South Dakota Age & Gender Pyramid

Population pyramid for

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


Marshall County, South Dakota Historical Population Data

YearMedian AgePopulation
202442.54,344
202342.84,355
202243.74,363
202142.44,373
202043.14,881
201939.84,891
201839.74,895
201741.34,759
201641.84,743
201542.64,701
201442.74,668
201342.54,657
201243.04,631
201142.84,614
201043.14,618

Marshall County, South Dakota Age Group Breakdown (2024)

Age CohortPercentage
Under 56.9%
5–1717.4%
18–247.8%
25–349.2%
35–5420.6%
55–6414.9%
65+23.2%

Dependency Ratios for Marshall County, South Dakota

Total Dependency Ratio:
90.7
Youth Dependency:
46.4
Old-Age Dependency:
44.3

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



Age & Gender FAQs for Marshall County, South Dakota

The median age in Marshall County, South Dakota is 42.5 years.

According to latest Census data, the total population of Marshall County, South Dakota is 4,344.

In Marshall County, South Dakota, seniors (ages 65+) make up 23.2% of the population, while children under 18 represent 17.4%.

Based on historical data since 2010, the population in Marshall County, South Dakota has remained stable.
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