From a total population of 9,535, Smithfield has a median age of 27. The average age of males, in Smithfield, is 27 while the average age of females is 26.9. When you compare this to median age of Utah, Smithfield is 2.9 years younger.
The median income of individuals, in Smithfield, is $18,971 while the average household income is $57,697. When comparing the median income of people living in Smithfield to the rest of Utah, the average income in Smithfield is $5,341 less.