King County's estimated 2025 population is 2,283,518 with a growth rate of 0.27% in the past year according to the most recent United States census data. King County is the 1st largest county in Washington. The 2010 population was 1,938,431 and has seen a growth of 17.8% since that time.
Data after 2023 is projected based on recent change
The racial composition of King County includes 56.74% White, 19.87% Asian, 6.52% Black or African American, 4.86% other race, and smaller percentages for Native Hawaiian or Pacific Islander, Native American and multiracial populations.
White
Asian
Two or more races
Black or African American
Other race
Native Hawaiian or Pacific Islander
Native American
Race | Population | Percentage (of total) |
|---|---|---|
| White | 1,283,809 | 56.74% |
| Asian | 449,705 | 19.87% |
| Two or more races | 240,012 | 10.61% |
| Black or African American | 147,642 | 6.52% |
| Other race | 109,978 | 4.86% |
| Native Hawaiian or Pacific Islander | 16,955 | 0.75% |
| Native American | 14,612 | 0.65% |
Married
Widowed
Divorced
Separated
Never Married
King County's average per capita income is $75,581. Household income levels show a median of $122,148. The poverty rate stands at 8.38%.
Name | Median | Mean |
|---|---|---|
| Married Families | $180,058 | $232,802 |
| Families | $154,490 | $207,630 |
| Households | $122,148 | $170,405 |
| Non Families | $80,037 | $112,739 |
Average Income
Median Household Income
Poverty Rate