Riley County, Kansas Age & Gender Distribution (2024)
Population distribution by age and gender for Riley County, Kansas
Riley County, Kansas Age & Gender Statistics (2024)
Total Population
71,946
Median Age
25.5
Male Median
25.1
Female Median
26.4
Riley County, Kansas Population Growth

Riley County, Kansas Demographic Trend
Since 2010, the population of has changed by +4.2%%.
+4.2%% Growth
Riley County, Kansas Age & Gender Pyramid

Figure 2: Population distribution by age and gender for 2024.
Riley County, Kansas Historical Population Data
| Year | Median Age | Population |
|---|---|---|
| 2024 | 25.5 | 71,946 |
| 2023 | 25.2 | 71,710 |
| 2022 | 24.9 | 72,105 |
| 2021 | 25.5 | 72,602 |
| 2020 | 25.4 | 74,059 |
| 2019 | 25.1 | 75,056 |
| 2018 | 25.1 | 75,296 |
| 2017 | 24.9 | 75,696 |
| 2016 | 24.9 | 75,026 |
| 2015 | 24.7 | 75,022 |
| 2014 | 24.6 | 74,478 |
| 2013 | 24.5 | 73,243 |
| 2012 | 24.3 | 71,927 |
| 2011 | 24.3 | 70,249 |
| 2010 | 24.1 | 69,035 |
Riley County, Kansas Age Group Breakdown (2024)
| Age Cohort | Percentage |
|---|---|
| Under 5 | 4.8% |
| 5–17 | 11.3% |
| 18–24 | 32.6% |
| 25–34 | 16.3% |
| 35–54 | 17.7% |
| 55–64 | 7.3% |
| 65+ | 10.0% |
Dependency Ratios for Riley County, Kansas
- Total Dependency Ratio:
- 35.4
- Youth Dependency:
- 21.8
- Old-Age Dependency:
- 13.6
The dependency ratio measures dependents (ages 0-17 and 65+) per 100 working-age individuals (ages 18-64).
Age & Gender FAQs for Riley County, Kansas
The median age in Riley County, Kansas is 25.5 years.
According to latest Census data, the total population of Riley County, Kansas is 71,946.
In Riley County, Kansas, seniors (ages 65+) make up 10.0% of the population, while children under 18 represent 11.3%.
Based on historical data since 2010, the population in Riley County, Kansas has remained stable.