From a total population of 37,754, Madison County has a median age of 23. The average age of males, in Madison County, is 23.8 while the average age of females is 22. When you compare this to median age of Idaho, Madison County is 12.2 years younger.
The median income of individuals, in Madison County, is $15,406 while the average household income is $32,052. When comparing the median income of people living in Madison County to the rest of Idaho, the average income in Madison County is $7,681 less.