This resource, created by the University of Michigan Library Document Center, is an invaluable tool for tracking down freely available statistics on the web. Although the resources listed are mostly focused on the United States, the site also provides links to international statistical sources. The site is organized into broad categories including: Agriculture, Health, Cost of Living, Foreign Governments, etc… There is also a search function.

Updated August 20, 2012:

This resource, created by the University of Michigan Library Document Center, is an invaluable tool for tracking down freely available statistics on the web. Although the resources listed are mostly focused on the United States, the site also provides links to international statistical sources. The site is organized into broad categories including: Agriculture, Health, Cost of Living, Foreign Governments, etc… There is also a search function.

Updated August 20, 2012:

The link to the University of Michigan Library Document Center appears to no longer exist, but here is an alternate source that has freely available U.S. government documents.