From a total population of 100,486, Yamhill County has a median age of 38. The average age of males, in Yamhill County, is 36.9 while the average age of females is 39. When you compare this to median age of Oregon, Yamhill County is 0.9 years younger.
The median income of individuals, in Yamhill County, is $24,018 while the average household income is $53,864. When comparing the median income of people living in Yamhill County to the rest of Oregon, the average income in Yamhill County is $3,155 less.