From a total population of 31,181, Galesburg has a median age of 40. The average age of males, in Galesburg, is 38 while the average age of females is 43.1. When you compare this to median age of Illinois, Galesburg is 3.0 years older.
The median income of individuals, in Galesburg, is $20,025 while the average household income is $33,369. When comparing the median income of people living in Galesburg to the rest of Illinois, the average income in Galesburg is $9,994 less.