From a total population of 682,108, Rockdale has a median age of 36.2. The average age of males, in Rockdale, is 35.3 while the average age of females is 37.1. When you compare this to median age of Illinois, Rockdale is 0.8 years younger.
The median income of individuals, in Rockdale, is $30,791 while the average household income is $76,142. When comparing the median income of people living in Rockdale to the rest of Illinois, the average income in Rockdale is $772 more.