Washington County's estimated 2026 population is 11,674 with a growth rate of 0.79% in the past year according to the most recent United States census data. Washington County is the 29th largest county in Idaho. The 2010 population was 10,177 and has seen a growth of 14.71% since that time.
Data after 2023 is projected based on recent change
Overall: 45 years
Female: 45.7 years
Male: 43.9 years
There are 8,668 adults, (2,964 of whom are seniors) in Washington County.
Female: 5,572 (50%)
Male: 5,570 (50%)
The racial composition of Washington County includes 79.49% White, 7.57% other race, and smaller percentages for Native American, Asian, Black or African American, Native Hawaiian or Pacific Islander and multiracial populations.
Race | Population | Percentage (of total) |
|---|---|---|
| White | 8,857 | 79.49% |
| Two or more races | 1,117 | 10.03% |
| Other race | 843 | 7.57% |
| Native American | 189 | 1.7% |
| Asian | 86 | 0.77% |
| Black or African American | 33 | 0.3% |
| Native Hawaiian or Pacific Islander | 17 | 0.15% |
Washington County's average per capita income is $40,903. Household income levels show a median of $54,000. The poverty rate stands at 15.28%.
Name | Median | Mean |
|---|---|---|
| Married Families | $73,963 | - |
| Families | $67,318 | $91,359 |
| Households | $54,000 | $77,135 |
| Non Families | $32,455 | $40,311 |
Average Income
Median Household Income
Poverty Rate
