The poverty rate for children also differs by age, with the youngest children most likely to live under the official poverty line. (see Figure 4) Children under the age of 5 have a poverty rate of 15.5 percent, compared with 14.9 percent for children between ages 6 and 11 and 12.9 percent for those between ages 12 and 17. Those differences are due, in part, to the higher expenses associated with younger children, such as child care, and because parents tend to earn less earlier in their careers, when their children are younger.