From a total population of 15,847, San Juan County has a median age of 53.8. The average age of males, in San Juan County, is 53.5 while the average age of females is 54.1. When you compare this to median age of Washington, San Juan County is 16.4 years older.
The median income of individuals, in San Juan County, is $38,556 while the average household income is $54,331. When comparing the median income of people living in San Juan County to the rest of Washington, the average income in San Juan County is $7,323 more.