This report is the first of a four-part series related to use of paid child care and labor force participation of mothers. The report details who uses paid child care, what percent of household income is spent on child care for those families who pay for it, and what characteristics are associated with families who pay for child care (e.g., maternal labor force participation, reported expenditures for child care, household income, level of education, and age of children in paid care) across states. (author abstract)