Try these collections of statistics for history, business and sociology.

Historical Statistics of the United States: Millennial Edition

Standard source for data on all aspects of American history including population, work and welfare, economic structure and performance, economic sectors, and governance and international relations.

Key Business Ratios

Public and private company industry benchmarks.

Social Explorer

Provides U.S. demographic data back to 1790 through data reports and interactive demographic maps that can be viewed, queried, and manipulated on the site.