From a total population of 33,936, Northbrook has a median age of 47.8. The average age of males, in Northbrook, is 46.3 while the average age of females is 48.8. When you compare this to median age of Illinois, Northbrook is 10.8 years older.
The median income of individuals, in Northbrook, is $58,154 while the average household income is $115,085. When comparing the median income of people living in Northbrook to the rest of Illinois, the average income in Northbrook is $28,135 more.