Jasper County, Iowa Age & Gender Statistics (2024)

Total Population

37,954

Median Age

41.3

Male Median

39.9

Female Median

43.0

Jasper County, Iowa Population Growth

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

Jasper County, Iowa Demographic Trend

Since 2010, the population of has changed by +2.4%%.

+2.4%% Growth

Jasper County, Iowa Age & Gender Pyramid

Population pyramid for

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


Jasper County, Iowa Historical Population Data

YearMedian AgePopulation
202441.337,954
202341.437,864
202241.037,808
202140.937,686
202041.837,032
201942.136,971
201842.336,891
201742.636,789
201642.636,715
201542.236,726
201442.036,715
201342.136,710
201241.736,823
201141.736,902
201041.437,050

Jasper County, Iowa Age Group Breakdown (2024)

Age CohortPercentage
Under 55.2%
5–1716.9%
18–247.6%
25–3411.7%
35–5425.5%
55–6413.5%
65+19.8%

Dependency Ratios for Jasper County, Iowa

Total Dependency Ratio:
71.8
Youth Dependency:
37.8
Old-Age Dependency:
33.9

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



Age & Gender FAQs for Jasper County, Iowa

The median age in Jasper County, Iowa is 41.3 years.

According to latest Census data, the total population of Jasper County, Iowa is 37,954.

In Jasper County, Iowa, seniors (ages 65+) make up 19.8% of the population, while children under 18 represent 16.9%.

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