On average about 23 percent of children under 18 lived below the poverty level between 2005 and 2009.
Figure 2. Total Population by Age and Poverty Level, (2005 – 2009 Estimate)

Source: B17001.& B17020A-I POVERTY STATUS IN THE PAST 12 MONTHS BY SEX BY AGE2005 – 2009. American Community Survey 5-Year Estimations, US Census Bureau.