From a total population of 12,034, Shelby County has a median age of 46.5. The average age of males, in Shelby County, is 45.4 while the average age of females is 47.1. When you compare this to median age of Iowa, Shelby County is 8.5 years older.
The median income of individuals, in Shelby County, is $27,178 while the average household income is $49,599. When comparing the median income of people living in Shelby County to the rest of Iowa, the average income in Shelby County is $443 less.