Washington County, Minnesota Age & Gender Distribution (2024)
Population distribution by age and gender for Washington County, Minnesota
Washington County, Minnesota Age & Gender Statistics (2024)
Total Population
276,238
Median Age
39.8
Male Median
39.0
Female Median
40.5
Washington County, Minnesota Population Growth

Washington County, Minnesota Demographic Trend
Since 2010, the population of has changed by +18.8%%.
+18.8%% Growth
Washington County, Minnesota Age & Gender Pyramid

Figure 2: Population distribution by age and gender for 2024.
Washington County, Minnesota Historical Population Data
| Year | Median Age | Population |
|---|---|---|
| 2024 | 39.8 | 276,238 |
| 2023 | 39.9 | 272,298 |
| 2022 | 39.8 | 268,651 |
| 2021 | 39.6 | 264,818 |
| 2020 | 39.5 | 259,072 |
| 2019 | 39.5 | 255,938 |
| 2018 | 39.3 | 253,317 |
| 2017 | 39.2 | 250,979 |
| 2016 | 39.0 | 248,745 |
| 2015 | 38.9 | 246,670 |
| 2014 | 38.7 | 244,103 |
| 2013 | 38.5 | 241,315 |
| 2012 | 38.2 | 238,721 |
| 2011 | 38.1 | 235,802 |
| 2010 | 37.6 | 232,536 |
Washington County, Minnesota Age Group Breakdown (2024)
| Age Cohort | Percentage |
|---|---|
| Under 5 | 5.6% |
| 5–17 | 18.4% |
| 18–24 | 7.7% |
| 25–34 | 11.4% |
| 35–54 | 26.8% |
| 55–64 | 13.5% |
| 65+ | 16.6% |
Dependency Ratios for Washington County, Minnesota
- Total Dependency Ratio:
- 68.4
- Youth Dependency:
- 40.3
- Old-Age Dependency:
- 28.0
The dependency ratio measures dependents (ages 0-17 and 65+) per 100 working-age individuals (ages 18-64).
Age & Gender FAQs for Washington County, Minnesota
The median age in Washington County, Minnesota is 39.8 years.
According to latest Census data, the total population of Washington County, Minnesota is 276,238.
In Washington County, Minnesota, seniors (ages 65+) make up 16.6% of the population, while children under 18 represent 18.4%.
Based on historical data since 2010, the population in Washington County, Minnesota is aging.