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.
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