From a total population of 4,389, Smithville has a median age of 42.8. The average age of males, in Smithville, is 40.5 while the average age of females is 43.7. When you compare this to median age of Tennessee, Smithville is 4.5 years older.
The median income of individuals, in Smithville, is $21,023 while the average household income is $29,769. When comparing the median income of people living in Smithville to the rest of Tennessee, the average income in Smithville is $3,788 less.