Spokane County, Washington Age & Gender Distribution (2024)
Population distribution by age and gender for Spokane County, Washington
Spokane County, Washington Age & Gender Statistics (2024)
Total Population
549,056
Median Age
38.5
Male Median
37.7
Female Median
39.4
Spokane County, Washington Population Growth

Spokane County, Washington Demographic Trend
Since 2010, the population of has changed by +19.0%%.
+19.0%% Growth
Spokane County, Washington Age & Gender Pyramid

Figure 2: Population distribution by age and gender for 2024.
Spokane County, Washington Historical Population Data
| Year | Median Age | Population |
|---|---|---|
| 2024 | 38.5 | 549,056 |
| 2023 | 38.2 | 544,323 |
| 2022 | 38.0 | 538,711 |
| 2021 | 37.9 | 531,477 |
| 2020 | 37.8 | 513,402 |
| 2019 | 37.6 | 505,505 |
| 2018 | 37.5 | 497,875 |
| 2017 | 37.4 | 490,764 |
| 2016 | 37.3 | 485,859 |
| 2015 | 37.2 | 480,832 |
| 2014 | 37.1 | 476,950 |
| 2013 | 36.9 | 473,832 |
| 2012 | 36.8 | 470,375 |
| 2011 | 36.8 | 466,497 |
| 2010 | 36.6 | 461,262 |
Spokane County, Washington Age Group Breakdown (2024)
| Age Cohort | Percentage |
|---|---|
| Under 5 | 5.5% |
| 5–17 | 16.0% |
| 18–24 | 8.9% |
| 25–34 | 14.8% |
| 35–54 | 25.1% |
| 55–64 | 12.2% |
| 65+ | 17.4% |
Dependency Ratios for Spokane County, Washington
- Total Dependency Ratio:
- 63.8
- Youth Dependency:
- 35.3
- Old-Age Dependency:
- 28.5
The dependency ratio measures dependents (ages 0-17 and 65+) per 100 working-age individuals (ages 18-64).
Age & Gender FAQs for Spokane County, Washington
The median age in Spokane County, Washington is 38.5 years.
According to latest Census data, the total population of Spokane County, Washington is 549,056.
In Spokane County, Washington, seniors (ages 65+) make up 17.4% of the population, while children under 18 represent 16.0%.
Based on historical data since 2010, the population in Spokane County, Washington is aging.