Washington County's estimated 2026 population is 290,796 with a growth rate of 1.36% in the past year according to the most recent United States census data. Washington County is the 5th largest county in Minnesota. The 2010 population was 238,933 and has seen a growth of 21.71% since that time.
Data after 2023 is projected based on recent change
Overall: 39.8 years
Female: 40.5 years
Male: 39 years
There are 210,044 adults, (45,973 of whom are seniors) in Washington County.
Female: 138,820 (50.3%)
Male: 137,418 (49.7%)
The racial composition of Washington County includes 78.13% White, 7.71% Asian, 5.56% Black or African American, and smaller percentages for other race, Native American, Native Hawaiian or Pacific Islander and multiracial populations.
Race | Population | Percentage (of total) |
|---|---|---|
| White | 215,812 | 78.13% |
| Asian | 21,295 | 7.71% |
| Two or more races | 16,945 | 6.13% |
| Black or African American | 15,355 | 5.56% |
| Other race | 6,035 | 2.18% |
| Native American | 689 | 0.25% |
| Native Hawaiian or Pacific Islander | 107 | 0.04% |
Washington County's average per capita income is $70,179. Household income levels show a median of $115,345. The poverty rate stands at 5.12%.
Name | Median | Mean |
|---|---|---|
| Married Families | $153,701 | $189,786 |
| Families | $135,522 | $170,687 |
| Households | $115,345 | $148,415 |
| Non Families | $65,375 | $89,315 |
Average Income
Median Household Income
Poverty Rate