U.S. Government agencies

• U.S. Bureau of the Census
• Listing of all government agencies that collect statistics (www.fedstats.gov)
• National Center for Education Statistics

International statistical agencies (all have English versions)

• Statistics Canada
• UK Office for National Statistics
• Institut National de la Statistique et des Etudes Economiques (INSEE, France)
• Statistics Norway
• Statistics Sweden
• Australian Bureau of Statistics
• World Health Organization
• Food and Agriculture Organization of the United Nations

Private sector survey organizations

• The Gallup Organization
• Nielsen Media Research (the Nielsen television ratings)
• National Opinion Research Center

Professional organizations

• Survey Research Methods Section of the American Statistical Association
• Statistical Society of Canada Survey Research Section
• International Association of Survey Statisticians
• American Association for Public Opinion Research

Sample Survey Software from the University of Virginia  (developed by Dr. T. Chang)