The United States Census enumerated Whites and Blacks since 1790, Asians and Native Americans since 1860 (though all Native Americans in the U.S. were not enumerated until 1890), "some other race" since 1950, and "two or more races" since 2000.[2] Hispanics (as well as the Non-Hispanic White population) were enumerated since 1940 (with the exception of 1950 and 1960), but some estimates for the Hispanic (and Non-Hispanic White) population were made for certain years before 1940 (as well as for 1950 and 1960).
Reference 1: White, Black, American Indian, Eskimo, and Aleut, Asian and Pacific Islander, Other race, Two or more races, Hispanic (of any race) and Non-Hispanic White.
Reference 2: 1910, 1920, 1930, 1940, 1950, 1960, 1970, 1980, 1990, 2000 and 2010.
Source: http://en.wikipedia.org/wiki/Racial_and_ethnic_demographics_of_the_United_States
Reference 2: 1910, 1920, 1930, 1940, 1950, 1960, 1970, 1980, 1990, 2000 and 2010.
Source: http://en.wikipedia.org/wiki/Racial_and_ethnic_demographics_of_the_United_States
