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==Riservatezza del dichiarante==
Lo scopo principale del censimento è quello di dividere i numeri delle case per la popolazione. Inoltre, i dati raccolti vengono utilizzati in forma aggregata per fini statistici<ref>{{cita web|url=http://www.thisnation.com/question/022.html|titolo=What is the purpose of the Census? What is the data used for?|lingua=en|accesso=}}</ref>.
By law (92 Stat. 915, Public Law 95-416, enacted on October 5, 1978), individual census records are sealed for 72 years,<ref>{{cite web|url=http://www.census.gov/history/www/genealogy/decennial_census_records/the_72_year_rule_1.html |title=The "72-Year Rule" | publisher=U.S. Census Bureau}}</ref> a number chosen in 1952<ref>{{cite web|url=http://www.npr.org/2012/04/02/149575704/the-1940-census-72-year-old-secrets-revealed |title=The 1940 Census: 72-Year-Old Secrets Revealed}}</ref> as slightly higher than the average female life expectancy, 71.6.<ref>{{cite web|url=http://demog.berkeley.edu/~andrew/1918/figure2.html |title=Life expectancy in the USA, 1900-98}}</ref> The individual census data most recently released to the public is the 1940 census, released on April 2, 2012. Aggregate census data are released when available.
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