Washington County's 2026 population is estimated at 54,181, reflecting a 0.27% growth rate over the past year (World Population Review estimate based on U.S. Census Bureau data). Washington County is the 15th largest county in Oklahoma. The 2010 population was 51,071 and has grown 6.09% since 2010.
Overall: 39.2 years
Female: 40.8 years
Male: 37.8 years
There are 40,506 adults, (10,803 of whom are seniors) in Washington County.
Female: 27,114 (50.8%)
Male: 26,212 (49.2%)
The racial composition of Washington County includes 72.17% White, 8.53% Native American, and smaller percentages for Black or African American, Asian, other race, Native Hawaiian or Pacific Islander and multiracial populations.
| Race | Population ↓ | Percentage (of total) |
|---|---|---|
| White | 38,484 | 72.17% |
| Two or more races | 6,849 | 12.84% |
| Native American | 4,548 | 8.53% |
| Black or African American | 1,289 | 2.42% |
| Asian | 1,078 | 2.02% |
| Other race | 1,067 | 2% |
| Native Hawaiian or Pacific Islander | 11 | 0.02% |
Washington County 's average per capita income is $43,093. Household income levels show a median of $60,162. The poverty rate stands at 16.06%.
| Name | Median ↓ | Mean |
|---|---|---|
| Married Families | $100,159 | $125,203 |
| Families | $80,125 | $106,068 |
| Households | $60,162 | $87,082 |
| Non Families | $34,583 | $47,986 |
Average Income
Median Household Income
Poverty Rate