Miami County, Kansas Age & Gender Statistics (2024)

Total Population

34,938

Median Age

41.7

Male Median

41.8

Female Median

41.7

Miami County, Kansas Population Growth

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

Miami County, Kansas Demographic Trend

Since 2010, the population of has changed by +8.8%%.

+8.8%% Growth

Miami County, Kansas Age & Gender Pyramid

Population pyramid for

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


Miami County, Kansas Historical Population Data

YearMedian AgePopulation
202441.734,938
202341.834,625
202242.534,312
202142.533,968
202042.933,740
201942.133,417
201841.933,127
201741.732,976
201640.832,787
201540.432,688
201440.332,765
201340.232,682
201240.132,546
201139.832,419
201039.732,116

Miami County, Kansas Age Group Breakdown (2024)

Age CohortPercentage
Under 55.2%
5–1718.4%
18–248.4%
25–3410.2%
35–5425.1%
55–6414.7%
65+18.1%

Dependency Ratios for Miami County, Kansas

Total Dependency Ratio:
71.4
Youth Dependency:
40.4
Old-Age Dependency:
31.0

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



Age & Gender FAQs for Miami County, Kansas

The median age in Miami County, Kansas is 41.7 years.

According to latest Census data, the total population of Miami County, Kansas is 34,938.

In Miami County, Kansas, seniors (ages 65+) make up 18.1% of the population, while children under 18 represent 18.4%.

Based on historical data since 2010, the population in Miami County, Kansas is aging.
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