Clay County, Missouri Age & Gender Statistics (2024)

Total Population

258,122

Median Age

37.9

Male Median

37.0

Female Median

38.8

Clay County, Missouri Population Growth

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

Clay County, Missouri Demographic Trend

Since 2010, the population of has changed by +20.0%%.

+20.0%% Growth

Clay County, Missouri Age & Gender Pyramid

Population pyramid for

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


Clay County, Missouri Historical Population Data

YearMedian AgePopulation
202437.9258,122
202337.6255,566
202237.5253,085
202137.4250,134
202037.2246,480
201937.1242,516
201837.1239,164
201736.8236,068
201636.8233,135
201536.6230,361
201436.5227,984
201336.3225,116
201236.4222,048
201136.1218,767
201036.0215,015

Clay County, Missouri Age Group Breakdown (2024)

Age CohortPercentage
Under 55.9%
5–1717.6%
18–247.8%
25–3414.2%
35–5427.1%
55–6412.0%
65+15.3%

Dependency Ratios for Clay County, Missouri

Total Dependency Ratio:
63.4
Youth Dependency:
38.5
Old-Age Dependency:
25.0

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



Age & Gender FAQs for Clay County, Missouri

The median age in Clay County, Missouri is 37.9 years.

According to latest Census data, the total population of Clay County, Missouri is 258,122.

In Clay County, Missouri, seniors (ages 65+) make up 15.3% of the population, while children under 18 represent 17.6%.

Based on historical data since 2010, the population in Clay County, Missouri is aging.
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