Whiteside County, Illinois Age & Gender Statistics (2024)

Total Population

54,947

Median Age

43.0

Male Median

41.5

Female Median

44.5

Whiteside County, Illinois Population Growth

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

Whiteside County, Illinois Demographic Trend

Since 2010, the population of has changed by -6.5%%.

-6.5%% Growth

Whiteside County, Illinois Age & Gender Pyramid

Population pyramid for

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


Whiteside County, Illinois Historical Population Data

YearMedian AgePopulation
202443.054,947
202343.455,192
202243.555,569
202143.655,932
202043.655,583
201943.456,016
201843.256,396
201742.956,823
201642.857,155
201542.757,525
201442.457,680
201342.158,150
201242.058,400
201141.658,622
201041.258,750

Whiteside County, Illinois Age Group Breakdown (2024)

Age CohortPercentage
Under 55.5%
5–1716.5%
18–247.7%
25–3411.2%
35–5423.4%
55–6414.1%
65+21.8%

Dependency Ratios for Whiteside County, Illinois

Total Dependency Ratio:
77.7
Youth Dependency:
39.0
Old-Age Dependency:
38.7

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



Age & Gender FAQs for Whiteside County, Illinois

The median age in Whiteside County, Illinois is 43.0 years.

According to latest Census data, the total population of Whiteside County, Illinois is 54,947.

In Whiteside County, Illinois, seniors (ages 65+) make up 21.8% of the population, while children under 18 represent 16.5%.

Based on historical data since 2010, the population in Whiteside County, Illinois is aging.
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