The Personal Responsibility and Work Opportunity Reconciliation Act (PRWORA) of 1996 unified the four major federal level subsidized child care streams into the Child Care and Development Fund (CCDF). In order to receive CCDF funds, every state must conduct a market rate survey to analyze whether child care subsidies adequately allow child care subsidy recipients equal choice and access among child care providers. One of the requirements laid out by the PRWORA is that each state must conduct a market rate analysis biennially. However, each state is allowed to decide the design and method of the analysis. Though some states do create and conduct a survey, the market rate analysis in Illinois utilizes the Child Care Resource and Referral (CCR&R) administrative data. The administrative data is collected by local CCR&R agencies and maintained by the Illinois Network of Child Care Resource and Referral Agencies (INCCRRA). INCCRRA's provider database from December 31, 2011 was used for these analyses. The Illinois Department of Human Services (IDHS) assistance rates are based upon the daily full-time price of child care for a given market. Inclusion in the market-rate analysis was limited to licensed providers accepting children on a full-time, part-time or both full-time and part-time basis, those currently providing care, those who provide year round or school year care, those who gave referral information, and those with valid child care rate data. The December 31, 2011 database contained records for 13,168 providers who were listed as both active and licensed to provide care. Of those, 8280 of these providers met all of the criteria for inclusion in the market rate survey sample. Separate samples were drawn from the 8280 providers for providers serving children 6 weeks to 5 years old, providers serving children 6 to 12 years old in before and after school programs, and providers serving children 6 to 12 years old in summer care programs. The sample of providers caring for children 6 weeks to 5 years of age included 5808 providers: 1359 licensed child care center centers, 4092 licensed family child care providers, and 357 licensed group family home providers. The sample of providers caring for children 6 to 12 years old in before and after school programs included 2602 providers: 654 licensed center child care providers, 1731 licensed family child care providers, and 217 licensed group family home providers. The sample of providers caring for children 6 to 12 years old in summer programs included 975 providers: 344 licensed child care center providers, 590 licensed family child care providers, and 41 licensed group family home providers. (author abstract)