U.S. Census of 1840
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The United States census of 1840 was the sixth census of the United States. Conducted by the Census Office on June 1, 1840, it determined the resident population of the United States to be 17,069,453 – an increase of 32.7 percent over the 12,866,020 persons enumerated during the 1830 census. The total population included 2,487,355 slaves. In 1840, the center of population was about 260 miles (418 km) west of Washington, near Weston, Virginia (now in West Virginia). This was the first census in which: * A state recorded a population of over two million (
New York New York most commonly refers to: * New York City, the most populous city in the United States, located in the state of New York * New York (state), a state in the northeastern United States New York may also refer to: Film and television * '' ...
) * A city recorded a population of over 300,000 (
New York New York most commonly refers to: * New York City, the most populous city in the United States, located in the state of New York * New York (state), a state in the northeastern United States New York may also refer to: Film and television * '' ...
) * Multiple cities recorded populations of over 100,000 (New York,
Baltimore Baltimore ( , locally: or ) is the most populous city in the U.S. state of Maryland, fourth most populous city in the Mid-Atlantic, and the 30th most populous city in the United States with a population of 585,708 in 2020. Baltimore was d ...
, and New Orleans)


Controversy over statistics for mental illness among Northern blacks

The 1840 census was the first that attempted to count Americans who were "insane" or "idiotic". Published results of the census indicated that alarming numbers of black persons living in non-slaveholding States were mentally ill, in striking contrast to the corresponding figures for slaveholding States. Pro-slavery advocates trumpeted the results as evidence of the beneficial effects of slavery, and the probable consequences of emancipation., and sources there cited. Anti-slavery advocates contended, on the contrary, that the published returns were riddled with errors, as detailed in an 1844 report by Edward Jarvis of Massachusetts in the American Journal of the Medical Sciences, later published separately as a pamphlet, and in a memorial from the American Statistical Association to Congress, praying that measures be taken to correct the errors. The memorial was submitted to the House of Representatives by John Quincy Adams, who contended that it demonstrated "a multitude of gross and important errors" in the published returns. In response to the House's request for an inquiry, Secretary of State
John C. Calhoun John Caldwell Calhoun (; March 18, 1782March 31, 1850) was an American statesman and political theorist from South Carolina who held many important positions including being the seventh vice president of the United States from 1825 to 1832. He ...
reported that a careful examination of the statistics by the supervisor of the census had fully sustained their correctness. Calhoun engaged William A. Weaver, the superintendent of the 1840 census, to review the figures and check them against related data from the 1830 census. ''Ibid.'' Weaver reported that he had examined "each specification of error" and concluded that the memorialists had themselves erred in their claims. While there doubtless had been minor errors, he said, there had been no glaring methodological mistakes as charged. ''See'' William Edwin Hemphill, ed.
''The Papers of John C. Calhoun: 1845''
Columbia: Univ. of South Carolina Press, 1993, vol. 21, p. 156.
The returns were not revised.


Census questions

The 1840 census asked these questions: Note that several pages on U.S. federal web sites incorrectly assert that the 1840 census questionnaire closely followed that from the 1830 census, which did not include questions concerning mental illness. * Name of head of family * Address * Number of free white males and females ** in five-year age groups to age 20 ** in 10-year age groups from 20 to 100 ** 100 years and older * number of slaves and free colored persons in six age groups * number of deaf and dumb, by race * number of blind, by race * number of insane and idiotic in public or private charge, by race * number of persons in each family 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 Microdata can mean: * Microdata (statistics), a statistical term for individual response data in surveys and censuses * Microdata (HTML), a specification for semantic markup in HTML * Microdata Corporation Microdata Corporation was an American ...
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 availabl
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)


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. {{Authority control United States Census, 1840 United States census United States