Kittitas County, Washington Age & Gender Distribution (2024)
Population distribution by age and gender for Kittitas County, Washington
Kittitas County, Washington Age & Gender Statistics (2024)
Total Population
47,172
Median Age
35.8
Male Median
35.7
Female Median
36.0
Kittitas County, Washington Population Growth

Kittitas County, Washington Demographic Trend
Since 2010, the population of has changed by +18.3%%.
+18.3%% Growth
Kittitas County, Washington Age & Gender Pyramid

Figure 2: Population distribution by age and gender for 2024.
Kittitas County, Washington Historical Population Data
| Year | Median Age | Population |
|---|---|---|
| 2024 | 35.8 | 47,172 |
| 2023 | 37.9 | 44,736 |
| 2022 | 36.4 | 44,424 |
| 2021 | 34.3 | 44,147 |
| 2020 | 33.7 | 47,097 |
| 2019 | 33.8 | 45,897 |
| 2018 | 33.1 | 44,825 |
| 2017 | 33.3 | 43,726 |
| 2016 | 33.7 | 42,785 |
| 2015 | 33.0 | 42,204 |
| 2014 | 32.7 | 41,705 |
| 2013 | 32.7 | 41,291 |
| 2012 | 32.4 | 40,954 |
| 2011 | 32.1 | 40,461 |
| 2010 | 32.2 | 39,869 |
Kittitas County, Washington Age Group Breakdown (2024)
| Age Cohort | Percentage |
|---|---|
| Under 5 | 4.1% |
| 5–17 | 12.5% |
| 18–24 | 20.0% |
| 25–34 | 12.3% |
| 35–54 | 21.3% |
| 55–64 | 12.7% |
| 65+ | 17.0% |
Dependency Ratios for Kittitas County, Washington
- Total Dependency Ratio:
- 50.9
- Youth Dependency:
- 25.2
- Old-Age Dependency:
- 25.7
The dependency ratio measures dependents (ages 0-17 and 65+) per 100 working-age individuals (ages 18-64).
Age & Gender FAQs for Kittitas County, Washington
The median age in Kittitas County, Washington is 35.8 years.
According to latest Census data, the total population of Kittitas County, Washington is 47,172.
In Kittitas County, Washington, seniors (ages 65+) make up 17.0% of the population, while children under 18 represent 12.5%.
Based on historical data since 2010, the population in Kittitas County, Washington is aging.