Washington County's 2026 population is estimated at 210,614, reflecting a 0.04% growth rate over the past year (World Population Review estimate based on U.S. Census Bureau data). Washington County is the 18th largest county in Pennsylvania. The 2010 population was 207,944 and has grown 1.28% since 2010.
Data after 2023 is projected based on recent change
Overall: 44.2 years
Female: 45.5 years
Male: 42.7 years
There are 168,972 adults, (46,167 of whom are seniors) in Washington County.
Female: 106,148 (50.5%)
Male: 103,894 (49.5%)
The racial composition of Washington County includes 90.08% White, 3.18% Black or African American, and smaller percentages for Asian, other race, Native American, Native Hawaiian or Pacific Islander and multiracial populations.
| Race | Population ↓ | Percentage (of total) |
|---|---|---|
| White | 189,198 | 90.08% |
| Two or more races | 9,698 | 4.62% |
| Black or African American | 6,683 | 3.18% |
| Asian | 2,711 | 1.29% |
| Other race | 1,562 | 0.74% |
| Native American | 178 | 0.08% |
| Native Hawaiian or Pacific Islander | 12 | 0.01% |
Washington County 's average per capita income is $54,389. Household income levels show a median of $78,958. The poverty rate stands at 9.61%.
| Name | Median ↓ | Mean |
|---|---|---|
| Married Families | $119,504 | $145,722 |
| Families | $103,392 | $129,869 |
| Households | $78,958 | $105,512 |
| Non Families | $43,631 | $59,042 |
Average Income
Median Household Income
Poverty Rate