From a total population of 4,708, Saint Clair has a median age of 37.6. The average age of males, in Saint Clair, is 33.6 while the average age of females is 40.2. When you compare this to median age of Missouri, Saint Clair is 0.5 years younger.
The median income of individuals, in Saint Clair, is $18,174 while the average household income is $34,792. When comparing the median income of people living in Saint Clair to the rest of Missouri, the average income in Saint Clair is $7,832 less.