King County, Washington Age & Gender Distribution (2024)
Population distribution by age and gender for King County, Washington
King County, Washington Age & Gender Statistics (2024)
Total Population
2,287,171
Median Age
37.4
Male Median
36.8
Female Median
38.0
King County, Washington Population Growth
King County, Washington Demographic Trend
Since 2010, the population of has changed by +21.7%%.
+21.7%% Growth
King County, Washington Age & Gender Pyramid
Figure 2: Population distribution by age and gender for 2024.
King County, Washington Historical Population Data
| Year | Median Age | Population |
|---|---|---|
| 2024 | 37.4 | 2,287,171 |
| 2023 | 37.3 | 2,262,713 |
| 2022 | 37.2 | 2,254,371 |
| 2021 | 37.1 | 2,240,876 |
| 2020 | 37.0 | 2,225,064 |
| 2019 | 37.0 | 2,195,502 |
| 2018 | 37.1 | 2,163,257 |
| 2017 | 37.2 | 2,118,119 |
| 2016 | 37.2 | 2,079,550 |
| 2015 | 37.2 | 2,045,756 |
| 2014 | 37.2 | 2,008,997 |
| 2013 | 37.1 | 1,974,567 |
| 2012 | 37.1 | 1,940,777 |
| 2011 | 37.0 | 1,908,379 |
| 2010 | 36.9 | 1,879,189 |
King County, Washington Age Group Breakdown (2024)
| Age Cohort | Percentage |
|---|---|
| Under 5 | 5.2% |
| 5–17 | 14.3% |
| 18–24 | 8.0% |
| 25–34 | 18.3% |
| 35–54 | 28.9% |
| 55–64 | 11.3% |
| 65+ | 14.0% |
Dependency Ratios for King County, Washington
- Total Dependency Ratio:
- 50.4
- Youth Dependency:
- 29.3
- Old-Age Dependency:
- 21.1
The dependency ratio measures dependents (ages 0-17 and 65+) per 100 working-age individuals (ages 18-64).
Age & Gender FAQs for King County, Washington
The median age in King County, Washington is 37.4 years.
According to latest Census data, the total population of King County, Washington is 2,287,171.
In King County, Washington, seniors (ages 65+) make up 14.0% of the population, while children under 18 represent 14.3%.
Based on historical data since 2010, the population in King County, Washington has remained stable.