Whitman County's estimated 2026 population is 49,397 with a growth rate of 1.02% in the past year according to the most recent United States census data. Whitman County is the 22nd largest county in Washington. The 2010 population was 44,795 and has seen a growth of 10.27% since that time.
Data after 2023 is projected based on recent change
The racial composition of Whitman County includes 76.71% White, 7.43% Asian, and smaller percentages for other race, Black or African American, Native American, Native Hawaiian or Pacific Islander and multiracial populations.
White (76.71%)
Two or more races (10.63%)
Asian (7.43%)
Other race (2.68%)
Black or African American (1.63%)
Native American (0.74%)
Native Hawaiian or Pacific Islander (0.18%)
Race | Population | Percentage (of total) |
|---|---|---|
| White | 36,086 | 76.71% |
| Two or more races | 5,000 | 10.63% |
| Asian | 3,496 | 7.43% |
| Other race | 1,262 | 2.68% |
| Black or African American | 766 | 1.63% |
| Native American | 346 | 0.74% |
| Native Hawaiian or Pacific Islander | 86 | 0.18% |
Married
Widowed
Divorced
Separated
Never Married
Whitman County's average per capita income is $47,263. Household income levels show a median of $52,893. The poverty rate stands at 23.69%.
Name | Median | Mean |
|---|---|---|
| Married Families | $99,567 | - |
| Families | $91,032 | $111,903 |
| Households | $52,893 | $78,956 |
| Non Families | $26,629 | $44,361 |
Average Income
Median Household Income
Poverty Rate