This report contains data on state library agencies in the 50 states and the District of Columbia for state fiscal year (FY) 2005.The data were collected through the State Library Agencies (StLA) Survey, the product of a cooperative effort between the Chief Officers of State Library Agencies (COSLA), the U.S. National Commission on Libraries and Information Science (NCLIS), the National Center for Education Statistics (NCES), and the U.S. Census Bureau. This cooperative effort makes possible the 100 percent response rate achieved for this survey. The frame or source of the list of respondents for this survey is based on the list that COSLA maintains of state library agencies. The FY 2005 survey is the twelfth in the StLA series. This report presents selected findings and background information about the survey. The body of this report is composed of tables providing an overview of state library agencies during the 2005 fiscal year. Appended are: (1) Technical Notes; and (2) Survey Instrument and Instructions. (Contains 11 tables and 6 footnotes.) [For "State Library Agencies, Fiscal Year 2004. E.D. TAB," see ED486464.]