From a total population of 7,254, Knoxville has a median age of 37.8. The average age of males, in Knoxville, is 35.2 while the average age of females is 40.1. When you compare this to median age of Iowa, Knoxville is 0.2 years younger.
The median income of individuals, in Knoxville, is $22,369 while the average household income is $41,723. When comparing the median income of people living in Knoxville to the rest of Iowa, the average income in Knoxville is $5,252 less.