1920 United States census

The 1920 census collected the following information: • Age • Marital status • If foreign born, year of immigration to the U.S., whether naturalized and, if so, year of naturalization • School attendance • Literacy • State of residence • If foreign-born, the mother tongue • Ability to speak English • Occupation, industry, and class of worker • Whether home owned or rented, and, if owned, whether free or mortgaged Full documentation for the 1920 census, including census forms and enumerator instructions, is available from the Integrated Public Use Microdata Series. ==State rankings==

==Locations of 50 most populous cities==

The original census enumeration sheets were microfilmed by the Census Bureau in the 1940s, after which the original sheets were destroyed. The microfilmed census is available in rolls from the National Archives and Records Administration. Several organizations also host images of the microfilmed census online, and digital indices. Microdata from the 1920 census are freely available through the Integrated Public Use Microdata Series. Aggregate data for small areas, together with electronic boundary files, can be downloaded from the National Historical Geographic Information System. ==Notes==