CRL's Academic Library Trends & Statistics -- Survey data from the latest ACRL edition.
American Library Association -- Office for Research and Statistics
Bowker Annual: Library and Book Trade Almanac -- The industry standard for tracking annual changes is book prices. Ref Z731 .A47
Institute of Museum and Library Services - Public Libraries Survey and the State Library Agencies Survey
National Center for Educational Statistics, Library Statistics Program -- Strong coverage of academic and school library collections, expenditures, services, and staffing survey results.
Public Library Data Service statistical report -- Ref Z731 .P94x (1988 - 2009)
ALA-APA Library Salary Database --ELECTRONIC
Various Reports --PRINT Includes librarians and library technicians.
American Association of Law Libraries (AALL) Ref Z682.3 .B54 -- PRINT
Association of Research Libraries (ARL) Ref Z682.3 .A88x --
Special Libraries Association (SLA) Ref Z682.3 .S58x --
Professional associations often provide statistics via their web sites. Try our "guide to library associations" or search the Encyclopedia of Associations for more options.
Professional and trade associations offer unique insider perspectives on the world of their membership with industry reports and member surveys you will not find elsewhere. Here is a representative list:
Specialized Library Associations
State & Locally-Based
Special Demographic or Technology Focus
Information Science and International