From a total population of 24,342, Ottumwa has a median age of 37.5. The average age of males, in Ottumwa, is 36.4 while the average age of females is 38.6. When you compare this to median age of Iowa, Ottumwa is 0.5 years younger.
The median income of individuals, in Ottumwa, is $20,694 while the average household income is $38,095. When comparing the median income of people living in Ottumwa to the rest of Iowa, the average income in Ottumwa is $6,927 less.