Island County, Washington
Located in Washington, Island County has a population of 86,836 residents and a median age of 44.8 years, making it the #680 most populous county out of 3,222 nationwide. In terms of economic indicators, the county has a poverty rate of 7.7%. The median home value is $593,300, and the median household income is $90,551, which is 20% above the national median.
Demographics
Island County has a population of 86,836, making it the #680 most populous county in the US. The median age is 44.8 years, which is 15.2% above the national median.
Population Trend
Rankings →Year-over-Year Population Growth
Age & Sex Distribution
Race & Ethnicity
Nativity
Geographic Mobility (Past Year)
Economy
The median household income in Island County is $90,551, ranking #288 out of 3,222 counties — 20.5% above the national median. The poverty rate is 7.7% and unemployment stands at 3.6%.
Median Household Income Trend
Rankings →Income Distribution
Industry of Employment
Occupation
Housing
The median home value in Island County is $593,300 (+110.5% vs national). Renters pay a median of $1,662/mo and the homeownership rate is 74.7%.
Median Home Value Trend
Rankings →Household Type
Education
In Island County, 36.6% of adults age 25+ hold a bachelor's degree or higher, which is 8.7% above the national average, ranking #395 out of 3,222 counties.
Bachelor's Degree or Higher Trend
Rankings →Health & Wellbeing
Life expectancy in Island County is 80.8 years. 13.3% of adults report poor or fair health and 6.7% lack health insurance. Data from County Health Rankings (2025).
Life Expectancy Trend
Substance Use
10.9% of adults in Island County smoke , 33.7% are obese , and 22.7% report excessive drinking. The drug overdose death rate is 16.9 per 100,000.
Adult Smoking Trend
Safety
The homicide rate in Island County is 1.9 per 100,000 and the suicide rate is 17.2 per 100,000. Motor vehicle deaths occur at a rate of 8.6 per 100,000.
Homicide Rate Trend
Families & Children
10.4% of children in Island County live in poverty and the infant mortality rate is 4.3 per 1,000 live births. The teen birth rate is 7.0 per 1,000 females age 15–19.
Infant Mortality Trend
Civic & Transportation
Voter turnout in Island County is 80.6%. The mean commute time is 28.6 min, which is 3.8% above the national average.
Voter Turnout Trend
Mean Commute Time Trend
Rankings →Elections
In the 2024 presidential election, Island County voted Democratic with a margin of 16.5%. The vote was 56.8% Dem / 40.3% Rep. Compared to 2020, the margin shifted +4.5 toward Democrats .
Vote Share Over Time
About Island County, Washington
Island County, Washington has a total population of 86,836, making it the 680th most populous county in the United States. The median age in Island County is 44.8 years, which is 15.2% above the national median of 38.9 years.
The median household income in Island County is $90,551, which ranks #288 of 3,222 counties nationwide. This is 20.5% above the national median of $75,149. The poverty rate is 7.7%, lower than the national rate of 12.6%. The unemployment rate stands at 3.6%.
The median home value in Island County is $593,300, 110.5% above the national median. Renters in Island County pay a median gross rent of $1,662 per month. The homeownership rate is 74.7%, compared to the national rate of 64.4%.
In Island County, 36.6% of residents aged 25 and older hold a bachelor's degree or higher, 8.7% above the national average of 33.7%. Health insurance coverage stands at 95.5% of the population. The average commute time for workers is 28.6 min.
Island County is a diverse community. The largest racial or ethnic group is White (non-Hispanic) at 75.4% of the population, followed by Hispanic or Latino (8.7%) and Two or More Races (7.5%).
All data for Island County, Washington comes from the U.S. Census Bureau's American Community Survey (ACS) 5-Year Estimates. These figures are estimates based on survey sampling and are subject to margin of error. For the most detailed and up-to-date data, visit the Census Bureau's official data portal.