Rising maternal employment, welfare reform, and increased preschool enrollment contribute to accelerating family demand for child care in California, and federal and state governments have responded by doubling support for child care and preschool programs between 1996 and 1999. However, there is little information available on how child care supply is distributed throughout the state and how demand will increase due to welfare reform. The Part one report presents preliminary information on 32 early indicators of child care supply and demand for all zip codes statewide to inform local and state planning and budgeting efforts. The report's introductory section defines demand and supply, discusses limitations of the data, and cautions planners in their use. The bulk of the report is comprised of the child care indicators, organized into five tables: (1) basic capacity of child-care providers by zip code, including number of centers, number of family child-care homes (FCCH), and number of licensed exempt providers; (2) characteristics of centers and FCCHs, including percentage open on weekends, evenings, or overnight and percentage with at least one Spanish-speaking staff member; (3) capacity levels standardized for child population by zip code, including capacity for preschoolers, school-age children, and children from welfare-supported families; (4) counts of all children and children in welfare-supported families, including counts of infants, preschoolers, and school-age children; and (5) families, mean household income, and maternal employment by zip code. Appended is a table delineating code values for each county. Part two also includes county-level aggregates, counts on single parents supported by the state welfare program and their job-related income, and size of the child-care workforce. It features income, and TANBF participants by zip code. (KB)