Effingham County, Illinois Age & Gender Statistics (2024)

Total Population

34,522

Median Age

40.0

Male Median

39.4

Female Median

40.7

Effingham County, Illinois Population Growth

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

Effingham County, Illinois Demographic Trend

Since 2010, the population of has changed by +0.8%%.

+0.8%% Growth

Effingham County, Illinois Age & Gender Pyramid

Population pyramid for

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


Effingham County, Illinois Historical Population Data

YearMedian AgePopulation
202440.034,522
202339.534,505
202239.334,594
202139.234,576
202039.534,151
201939.434,137
201839.134,174
201739.134,164
201639.234,356
201538.934,332
201439.234,280
201339.634,274
201239.534,258
201139.034,229
201038.734,232

Effingham County, Illinois Age Group Breakdown (2024)

Age CohortPercentage
Under 56.2%
5–1717.7%
18–247.0%
25–3412.6%
35–5423.7%
55–6413.9%
65+18.8%

Dependency Ratios for Effingham County, Illinois

Total Dependency Ratio:
74.7
Youth Dependency:
41.8
Old-Age Dependency:
32.9

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



Age & Gender FAQs for Effingham County, Illinois

The median age in Effingham County, Illinois is 40.0 years.

According to latest Census data, the total population of Effingham County, Illinois is 34,522.

In Effingham County, Illinois, seniors (ages 65+) make up 18.8% of the population, while children under 18 represent 17.7%.

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