From a total population of 11,069, Oskaloosa has a median age of 36.9. The average age of males, in Oskaloosa, is 34.8 while the average age of females is 38.4. When you compare this to median age of Iowa, Oskaloosa is 1.1 years younger.
The median income of individuals, in Oskaloosa, is $21,907 while the average household income is $39,385. When comparing the median income of people living in Oskaloosa to the rest of Iowa, the average income in Oskaloosa is $5,714 less.