From a total population of 4,284, Custer County has a median age of 49.4. The average age of males, in Custer County, is 49.1 while the average age of females is 50.2. When you compare this to median age of Idaho, Custer County is 14.2 years older.
The median income of individuals, in Custer County, is $22,537 while the average household income is $39,432. When comparing the median income of people living in Custer County to the rest of Idaho, the average income in Custer County is $550 less.