Shelby County, Iowa Age & Gender Statistics (2024)

Total Population

11,778

Median Age

44.3

Male Median

42.6

Female Median

45.5

Shelby County, Iowa Population Growth

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

Shelby County, Iowa Demographic Trend

Since 2010, the population of has changed by -4.5%%.

-4.5%% Growth

Shelby County, Iowa Age & Gender Pyramid

Population pyramid for

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


Shelby County, Iowa Historical Population Data

YearMedian AgePopulation
202444.311,778
202345.111,757
202245.511,737
202145.311,750
202046.511,544
201946.411,606
201846.111,694
201746.911,772
201647.011,944
201546.611,992
201446.512,034
201346.212,088
201245.812,158
201145.312,242
201044.712,328

Shelby County, Iowa Age Group Breakdown (2024)

Age CohortPercentage
Under 55.6%
5–1717.4%
18–247.6%
25–349.6%
35–5421.8%
55–6415.0%
65+23.1%

Dependency Ratios for Shelby County, Iowa

Total Dependency Ratio:
85.3
Youth Dependency:
42.5
Old-Age Dependency:
42.9

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



Age & Gender FAQs for Shelby County, Iowa

The median age in Shelby County, Iowa is 44.3 years.

According to latest Census data, the total population of Shelby County, Iowa is 11,778.

In Shelby County, Iowa, seniors (ages 65+) make up 23.1% of the population, while children under 18 represent 17.4%.

Based on historical data since 2010, the population in Shelby County, Iowa has remained stable.
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