When entire families lack health insurance, children may be eligible for insurance through the State Children's Health Insurance Program. Little is known, however, about the characteristics of families with uninsured children and at least 1 insured parent. In an analysis of nationally representative survey data collected in 2002 through 2005, DeVoe and colleagues assessed predictors of uninsurance among children with at least 1 insured parent. The authors found that approximately 3% of US children were uninsured and had an insured parent. Factors associated with child uninsurance include having low- or middle-household income, being of Hispanic origin, having parents who did not complete high school, and living in a single-parent household.