Walla Walla County's 2026 population is estimated at 62,626, reflecting a 0.45% growth rate over the past year (World Population Review estimate based on U.S. Census Bureau data). Walla Walla County is the 21st largest county in Washington. The 2010 population was 58,915 and has grown 6.3% since 2010.
Data after 2023 is projected based on recent change
Overall: 38.5 years
Female: 39.6 years
Male: 37.8 years
There are 49,374 adults, (12,409 of whom are seniors) in Walla Walla County.
Female: 30,615 (49.3%)
Male: 31,546 (50.7%)
The racial composition of Walla Walla County includes 72.47% White, 8.49% other race, and smaller percentages for Asian, Black or African American, Native American, Native Hawaiian or Pacific Islander and multiracial populations.
| Race | Population ↓ | Percentage (of total) |
|---|---|---|
| White | 45,047 | 72.47% |
| Two or more races | 8,747 | 14.07% |
| Other race | 5,279 | 8.49% |
| Asian | 1,151 | 1.85% |
| Black or African American | 1,032 | 1.66% |
| Native American | 756 | 1.22% |
| Native Hawaiian or Pacific Islander | 149 | 0.24% |
Walla Walla County 's average per capita income is $50,479. Household income levels show a median of $74,202. The poverty rate stands at 12.06%.
| Name | Median ↓ | Mean |
|---|---|---|
| Married Families | $107,144 | - |
| Families | $96,998 | $121,547 |
| Households | $74,202 | $98,236 |
| Non Families | $41,515 | $55,247 |
Average Income
Median Household Income
Poverty Rate