employed in seven classes of occupation number of schools and number of scholars number of white persons over 20 who could not read and write number of pensioners for Revolutionary or military service Data availability No microdata from the 1840 population census are available, but aggregate data for small areas, together with compatible cartographic boundary files, can be downloaded from the National Historical Geographic Information System. A compendium of data from the sixth census, organized by States, counties, and principal towns is available on the web site of the Census Bureau. State rankings City rankings References External links "1840 census: False count on insanity showed slavery was good for Blacks" by Peter Whoriskey, The Washington Post, October 17 2020 Compendium of the Enumeration of the Inhabitants and Statistics of the United States . . . from the Returns of the Sixth Census .... (Washington, D.C., 1841) Overview of the 1840 Census on www.census.gov. 1840 U.S. Federal Census Online Records and Indexes on www.cyndislist.com (21 Links) Includes links to sites with any or all of the following: digitized images, indexes, transcriptions, extractions, abstracts, and partial or whole copies of census materials. United States Census, 1840 United States census United States