Jefferson County, Washington Age & Gender Distribution (2024)
Population distribution by age and gender for Jefferson County, Washington
Jefferson County, Washington Age & Gender Statistics (2024)
Total Population
33,577
Median Age
59.8
Male Median
57.9
Female Median
61.1
Jefferson County, Washington Population Growth
Jefferson County, Washington Demographic Trend
Since 2010, the population of has changed by +13.5%%.
+13.5%% Growth
Jefferson County, Washington Age & Gender Pyramid
Figure 2: Population distribution by age and gender for 2024.
Jefferson County, Washington Historical Population Data
| Year | Median Age | Population |
|---|---|---|
| 2024 | 59.8 | 33,577 |
| 2023 | 59.5 | 33,313 |
| 2022 | 59.4 | 33,006 |
| 2021 | 59.3 | 32,590 |
| 2020 | 59.0 | 31,825 |
| 2019 | 58.3 | 31,285 |
| 2018 | 57.9 | 30,856 |
| 2017 | 57.1 | 30,524 |
| 2016 | 56.2 | 30,333 |
| 2015 | 55.6 | 30,083 |
| 2014 | 55.0 | 29,978 |
| 2013 | 54.3 | 29,882 |
| 2012 | 53.8 | 29,802 |
| 2011 | 53.2 | 29,709 |
| 2010 | 52.7 | 29,574 |
Jefferson County, Washington Age Group Breakdown (2024)
| Age Cohort | Percentage |
|---|---|
| Under 5 | 2.4% |
| 5–17 | 8.8% |
| 18–24 | 3.8% |
| 25–34 | 7.7% |
| 35–54 | 20.2% |
| 55–64 | 16.3% |
| 65+ | 40.7% |
Dependency Ratios for Jefferson County, Washington
- Total Dependency Ratio:
- 107.8
- Youth Dependency:
- 23.2
- Old-Age Dependency:
- 84.6
The dependency ratio measures dependents (ages 0-17 and 65+) per 100 working-age individuals (ages 18-64).
Age & Gender FAQs for Jefferson County, Washington
The median age in Jefferson County, Washington is 59.8 years.
According to latest Census data, the total population of Jefferson County, Washington is 33,577.
In Jefferson County, Washington, seniors (ages 65+) make up 40.7% of the population, while children under 18 represent 8.8%.
Based on historical data since 2010, the population in Jefferson County, Washington is aging.