From a total population of 21,129, South Milwaukee has a median age of 40.5. The average age of males, in South Milwaukee, is 41 while the average age of females is 39.7. When you compare this to median age of Wisconsin, South Milwaukee is 1.7 years older.
The median income of individuals, in South Milwaukee, is $25,559 while the average household income is $51,499. When comparing the median income of people living in South Milwaukee to the rest of Wisconsin, the average income in South Milwaukee is $2,348 less.