Kittitas County's estimated 2026 population is 48,826 with a growth rate of 0.67% in the past year according to the most recent United States census data. Kittitas County is the 24th largest county in Washington. The 2010 population was 40,992 and has seen a growth of 19.11% since that time.
Data after 2023 is projected based on recent change
The racial composition of Kittitas County includes 82.36% White, 5.19% other race, and smaller percentages for Asian, Black or African American, Native American, Native Hawaiian or Pacific Islander and multiracial populations.
White (82.36%)
Two or more races (9.02%)
Other race (5.19%)
Asian (1.77%)
Black or African American (1.06%)
Native American (0.5%)
Native Hawaiian or Pacific Islander (0.11%)
Race | Population | Percentage (of total) |
|---|---|---|
| White | 36,844 | 82.36% |
| Two or more races | 4,033 | 9.02% |
| Other race | 2,324 | 5.19% |
| Asian | 790 | 1.77% |
| Black or African American | 475 | 1.06% |
| Native American | 222 | 0.5% |
| Native Hawaiian or Pacific Islander | 48 | 0.11% |
Married
Widowed
Divorced
Separated
Never Married
Kittitas County's average per capita income is $53,038. Household income levels show a median of $69,928. The poverty rate stands at 14.31%.
Name | Median | Mean |
|---|---|---|
| Married Families | $108,492 | $130,667 |
| Families | $99,709 | $119,246 |
| Households | $69,928 | $95,281 |
| Non Families | $38,036 | $56,996 |
Average Income
Median Household Income
Poverty Rate