Keyword search in the RULA catalogue for historical statistics
Library of Congress Subject heading search using the name of a country or region and the word statistics
Example great britain statistics
Consult the RULA Geospatial Map and Data website.
Statistical Abstract of the United States (1878-2012)(United States Census Bureau)
Covers social, political, and economic orgainzation of the United States. Public access.
United States Census Bureau
Data about the American people and the economy. Public access.
NHGIS National Historical Geographic Information System
Free, aggregate U.S. census data and GIS-compatible boundary files for 1790-2012
U.S. Census and Demographic Information (This research guide by Catherine Morse at the University of Michigan Library includes a section on historical census data in addition to more general tips on using the U.S. Census)
United Nations iLibrary The free version allows reading online but does not allow pdf downloads. Many statistical resources are included such as UNECE Countries in Figures, and, World Statistics Pocketbook.