From a total population of 39,183, Waterville has a median age of 37. The average age of males, in Waterville, is 36 while the average age of females is 38.3. When you compare this to median age of Washington, Waterville is 0.4 years younger.
The median income of individuals, in Waterville, is $23,116 while the average household income is $53,235. When comparing the median income of people living in Waterville to the rest of Washington, the average income in Waterville is $8,117 less.