From a total population of 78,951, Island County has a median age of 43.7. The average age of males, in Island County, is 41.4 while the average age of females is 46.4. When you compare this to median age of Washington, Island County is 6.3 years older.
The median income of individuals, in Island County, is $31,563 while the average household income is $59,107. When comparing the median income of people living in Island County to the rest of Washington, the average income in Island County is $330 more.