From a total population of 16,552, Piatt County has a median age of 43. The average age of males, in Piatt County, is 41.8 while the average age of females is 44.3. When you compare this to median age of Illinois, Piatt County is 6.0 years older.
The median income of individuals, in Piatt County, is $31,750 while the average household income is $63,002. When comparing the median income of people living in Piatt County to the rest of Illinois, the average income in Piatt County is $1,731 more.