From a total population of 57,680, Whiteside County has a median age of 42.4. The average age of males, in Whiteside County, is 41.2 while the average age of females is 43.7. When you compare this to median age of Illinois, Whiteside County is 5.4 years older.
The median income of individuals, in Whiteside County, is $24,815 while the average household income is $48,343. When comparing the median income of people living in Whiteside County to the rest of Illinois, the average income in Whiteside County is $5,204 less.