From a total population of 21,589, Round Lake has a median age of 36.8. The average age of males, in Round Lake, is 36.1 while the average age of females is 37.4. When you compare this to median age of Minnesota, Round Lake is 0.8 years younger.
The median income of individuals, in Round Lake, is $23,068 while the average household income is $50,340. When comparing the median income of people living in Round Lake to the rest of Minnesota, the average income in Round Lake is $8,574 less.