From a total population of 4,458, Smithville has a median age of 40.6. The average age of males, in Smithville, is 42.3 while the average age of females is 39.6. When you compare this to median age of Texas, Smithville is 6.7 years older.
The median income of individuals, in Smithville, is $20,709 while the average household income is $35,887. When comparing the median income of people living in Smithville to the rest of Texas, the average income in Smithville is $5,804 less.