==State rankings====Notes====External links==*Official 1940 census website*1940 Census Records from the U.S. National Archives and Records Administration*1940 Federal Population Census Videos, training videos for enumerators at the U.S. National Archives*Selected Historical Decennial Census Population and Housing Counts from the U.S. Census Bureau*Snow, Michael S. (opinion) "Why the huge interest in the 1940 Census?
== پیوند به بیرون ==* 1940 Census Records from the U.S. دفتر ملی بایگانی و مدارک آمریکا* 1940 Federal Population Census Videos, training videos for enumerators at the U.S. National Archives* Selected Historical Decennial Census Population and Housing Counts from the U.S. Census Bureau* Snow, Michael S. (opinion) "Why the huge interest in the 1940 Census?