Island County's estimated 2026 population is 85,332 with a growth rate of -0.38% in the past year according to the most recent United States census data. Island County is the 16th largest county in Washington. The 2010 population was 78,700 and has seen a growth of 8.43% since that time.
Data after 2023 is projected based on recent change
Overall: 44.8 years
Female: 47.6 years
Male: 42.6 years
There are 71,787 adults, (23,259 of whom are seniors) in Island County.
Female: 43,160 (49.7%)
Male: 43,676 (50.3%)
The racial composition of Island County includes 77.66% White, 4.94% Asian, and smaller percentages for other race, Black or African American, Native American, Native Hawaiian or Pacific Islander and multiracial populations.
Race | Population | Percentage (of total) |
|---|---|---|
| White | 67,437 | 77.66% |
| Two or more races | 9,802 | 11.29% |
| Asian | 4,291 | 4.94% |
| Other race | 2,100 | 2.42% |
| Black or African American | 1,969 | 2.27% |
| Native American | 874 | 1.01% |
| Native Hawaiian or Pacific Islander | 363 | 0.42% |
Island County's average per capita income is $55,672. Household income levels show a median of $90,551. The poverty rate stands at 7.7%.
Name | Median | Mean |
|---|---|---|
| Married Families | $115,286 | - |
| Families | $108,026 | $129,938 |
| Households | $90,551 | $113,035 |
| Non Families | $53,933 | $72,550 |
Average Income
Median Household Income
Poverty Rate