From a total population of 17,774, Willmar has a median age of 35.2. The average age of males, in Willmar, is 32.4 while the average age of females is 39.8. When you compare this to median age of Minnesota, Willmar is 2.4 years younger.
The median income of individuals, in Willmar, is $22,874 while the average household income is $42,033. When comparing the median income of people living in Willmar to the rest of Minnesota, the average income in Willmar is $8,768 less.