Carroll County, Iowa Age & Gender Statistics (2024)

Total Population

20,594

Median Age

41.1

Male Median

39.3

Female Median

43.2

Carroll County, Iowa Population Growth

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

Carroll County, Iowa Demographic Trend

Since 2010, the population of has changed by -1.0%%.

-1.0%% Growth

Carroll County, Iowa Age & Gender Pyramid

Population pyramid for

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


Carroll County, Iowa Historical Population Data

YearMedian AgePopulation
202441.120,594
202341.820,677
202242.420,728
202142.020,756
202042.520,150
201942.020,281
201841.720,344
201741.720,428
201642.020,555
201542.320,629
201441.920,702
201342.220,732
201242.520,751
201142.520,809
201042.220,805

Carroll County, Iowa Age Group Breakdown (2024)

Age CohortPercentage
Under 55.9%
5–1718.4%
18–247.5%
25–3411.3%
35–5421.7%
55–6414.0%
65+21.2%

Dependency Ratios for Carroll County, Iowa

Total Dependency Ratio:
83.7
Youth Dependency:
44.8
Old-Age Dependency:
38.9

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



Age & Gender FAQs for Carroll County, Iowa

The median age in Carroll County, Iowa is 41.1 years.

According to latest Census data, the total population of Carroll County, Iowa is 20,594.

In Carroll County, Iowa, seniors (ages 65+) make up 21.2% of the population, while children under 18 represent 18.4%.

Based on historical data since 2010, the population in Carroll County, Iowa has remained stable.
Back to Overview