Union County, Iowa Age & Gender Statistics (2024)

Total Population

11,993

Median Age

40.5

Male Median

39.4

Female Median

41.8

Union County, Iowa Population Growth

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

Union County, Iowa Demographic Trend

Since 2010, the population of has changed by -3.4%%.

-3.4%% Growth

Union County, Iowa Age & Gender Pyramid

Population pyramid for

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


Union County, Iowa Historical Population Data

YearMedian AgePopulation
202440.511,993
202340.612,038
202240.012,107
202139.712,193
202040.612,303
201940.312,358
201839.912,453
201740.112,497
201640.312,539
201540.612,575
201441.112,554
201341.312,547
201241.512,525
201141.512,471
201041.412,409

Union County, Iowa Age Group Breakdown (2024)

Age CohortPercentage
Under 55.3%
5–1717.2%
18–249.2%
25–3410.8%
35–5423.7%
55–6413.1%
65+20.8%

Dependency Ratios for Union County, Iowa

Total Dependency Ratio:
76.2
Youth Dependency:
39.6
Old-Age Dependency:
36.6

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



Age & Gender FAQs for Union County, Iowa

The median age in Union County, Iowa is 40.5 years.

According to latest Census data, the total population of Union County, Iowa is 11,993.

In Union County, Iowa, seniors (ages 65+) make up 20.8% of the population, while children under 18 represent 17.2%.

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