Some 21 percent of Illinois children — about 616,000 — were living in poverty in 2013 compared with 17 percent in 2008, according to the Annie E. Casey Foundation, a child advocacy group. Those numbers, the most recent available, closely resemble the national figures, which also show the poverty rates for black and American Indian children were more than double the rate for non-Hispanic whites. In Chicago, about 34 percent of children were living in poverty in 2013.