From a total population of 5,450, Spring Valley has a median age of 39.8. The average age of males, in Spring Valley, is 34.7 while the average age of females is 44.4. When you compare this to median age of Illinois, Spring Valley is 2.8 years older.
The median income of individuals, in Spring Valley, is $25,556 while the average household income is $45,000. When comparing the median income of people living in Spring Valley to the rest of Illinois, the average income in Spring Valley is $4,463 less.