From a total population of 66,662, Waterloo has a median age of 35.8. The average age of males, in Waterloo, is 34.7 while the average age of females is 37.6. When you compare this to median age of Iowa, Waterloo is 2.2 years younger.
The median income of individuals, in Waterloo, is $22,628 while the average household income is $41,461. When comparing the median income of people living in Waterloo to the rest of Iowa, the average income in Waterloo is $4,993 less.