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- Bureau of the Census -- official site to the Bureau with numerous links to contemporary, recent and projected census and demographic data.
- Census Atlas of the United States
-- provides the complete content, in PDF format, of the Atlas, a
large-format publication about 300 pages long and containing almost 800
maps. Data from decennial censuses prior to 2000 support nearly 150
maps and figures, providing context and an historical perspective for
many of the topics presented.
- Census of Population and Housing
-- data presented here ranges from our most recent census to the
historical decennial census conducted throughout the decades. Some of
the data were scanned as an effort to make historical census
information available to the public.
- Historical Census Browser -- a site produced by University of Virginia, Geospatial and Statistical Data Center, that
draws data and terminology directly from historical volumes of the U.S. Census of Population
Historical Census Publications
-- created by the University of Michigan Library, this site provides,
among other things, access to the Census Question Data Base which
offers the exact wording of Census questions since 1790, arranged by
year. The site also include useful links to other sources of historical
National Historical Geographic Information System -- provides, free of charge, aggregate census data and GIS compatible
boundary files for the United States between 1790 and 2000. NHGIS
includes state and county statistical data from 1790-2000; census tract
statistical data from 1910-2000; historic state and county boundary
files (1790-2000) and census tract boundary files (1910-2000); all
summary data (at all summary levels, including census blocks) from
1970-2000; and, County Business Patterns data from 1970-2000.
- United States Census Demographic Maps -- made available by Social Explorer, the site provides
a free collection of historical census data maps and reports on the United States from 1940 to 2000.