From a total population of 36,109, Duncanville has a median age of 36.9. The average age of males, in Duncanville, is 33.6 while the average age of females is 38.9. When you compare this to median age of Texas, Duncanville is 3.0 years older.
The median income of individuals, in Duncanville, is $23,907 while the average household income is $55,100. When comparing the median income of people living in Duncanville to the rest of Texas, the average income in Duncanville is $2,606 less.