In FY 2007, the national child support program served 17 million children and collected $25 billion in child support, yet little is known about the underlying demographic and economic characteristics of the individuals served. To remedy this lack of information, Courtland Consulting and the Urban Institute, under contract with the federal Office of Child Support Enforcement, surveyed nine state child support programs about their caseloads. We found that state child support programs are able to provide considerable amounts of information about their clients, but key characteristics proved difficult to obtain, such as the poverty status of the families served.