Washington County, Oregon Age & Gender Distribution (2024)
Population distribution by age and gender for Washington County, Oregon
Washington County, Oregon Age & Gender Statistics (2024)
Total Population
603,947
Median Age
38.1
Male Median
37.3
Female Median
38.9
Washington County, Oregon Population Growth
Washington County, Oregon Demographic Trend
Since 2010, the population of has changed by +16.9%%.
+16.9%% Growth
Washington County, Oregon Age & Gender Pyramid
Figure 2: Population distribution by age and gender for 2024.
Washington County, Oregon Historical Population Data
| Year | Median Age | Population |
|---|---|---|
| 2024 | 38.1 | 603,947 |
| 2023 | 37.8 | 600,266 |
| 2022 | 37.5 | 599,541 |
| 2021 | 37.3 | 596,969 |
| 2020 | 36.9 | 595,761 |
| 2019 | 36.7 | 589,481 |
| 2018 | 36.5 | 581,821 |
| 2017 | 36.4 | 572,071 |
| 2016 | 36.2 | 564,088 |
| 2015 | 36.1 | 556,210 |
| 2014 | 35.9 | 547,451 |
| 2013 | 35.6 | 539,608 |
| 2012 | 35.4 | 531,818 |
| 2011 | 35.1 | 524,275 |
| 2010 | 34.9 | 516,665 |
Washington County, Oregon Age Group Breakdown (2024)
| Age Cohort | Percentage |
|---|---|
| Under 5 | 5.3% |
| 5–17 | 16.3% |
| 18–24 | 7.9% |
| 25–34 | 15.6% |
| 35–54 | 28.9% |
| 55–64 | 11.2% |
| 65+ | 14.8% |
Dependency Ratios for Washington County, Oregon
- Total Dependency Ratio:
- 57.1
- Youth Dependency:
- 33.9
- Old-Age Dependency:
- 23.2
The dependency ratio measures dependents (ages 0-17 and 65+) per 100 working-age individuals (ages 18-64).
Age & Gender FAQs for Washington County, Oregon
The median age in Washington County, Oregon is 38.1 years.
According to latest Census data, the total population of Washington County, Oregon is 603,947.
In Washington County, Oregon, seniors (ages 65+) make up 14.8% of the population, while children under 18 represent 16.3%.
Based on historical data since 2010, the population in Washington County, Oregon is aging.