From a total population of 5,412, Holtville has a median age of 26.9. The average age of males, in Holtville, is 26.4 while the average age of females is 33. When you compare this to median age of California, Holtville is 8.7 years younger.
The median income of individuals, in Holtville, is $14,247 while the average household income is $29,628. When comparing the median income of people living in Holtville to the rest of California, the average income in Holtville is $15,659 less.