The national Public Libraries Survey data for 2011 is now available on the Institute of Museum and Library Services (IMLS) web site: http://www.imls.gov/research/pls_data_files.aspx. The data files are available in csv, xls, flat (ascii) and SAS formats. The FY 2011 PLS report will be released in the early fall 2013.
Massive spreadsheets not your cup of tea? IMLS also has a “Compare Public Libraries” tool that “allows users to compare one library (the library of interest) with similar libraries (the comparison group).” Compare Public Libraries tool: https://harvester.census.gov/imls/compare/index.asp.