Hamilton County, Iowa Age & Gender Statistics (2024)

Total Population

14,886

Median Age

41.7

Male Median

40.1

Female Median

44.0

Hamilton County, Iowa Population Growth

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

Hamilton County, Iowa Demographic Trend

Since 2010, the population of has changed by -6.2%%.

-6.2%% Growth

Hamilton County, Iowa Age & Gender Pyramid

Population pyramid for

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


Hamilton County, Iowa Historical Population Data

YearMedian AgePopulation
202441.714,886
202342.214,893
202241.914,979
202142.015,073
202042.614,905
201942.614,997
201842.415,110
201742.615,201
201643.015,227
201542.415,297
201442.315,363
201342.015,486
201242.115,614
201141.415,755
201040.915,874

Hamilton County, Iowa Age Group Breakdown (2024)

Age CohortPercentage
Under 55.2%
5–1718.7%
18–246.7%
25–3410.2%
35–5423.8%
55–6414.2%
65+21.2%

Dependency Ratios for Hamilton County, Iowa

Total Dependency Ratio:
81.9
Youth Dependency:
43.4
Old-Age Dependency:
38.6

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



Age & Gender FAQs for Hamilton County, Iowa

The median age in Hamilton County, Iowa is 41.7 years.

According to latest Census data, the total population of Hamilton County, Iowa is 14,886.

In Hamilton County, Iowa, seniors (ages 65+) make up 21.2% of the population, while children under 18 represent 18.7%.

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