Column 12 on the 1930 census form asked for "color or race." The 1930 census enumerators were given these instructions: "Write 'W' for White; 'Neg' for Negro; 'Mex for Mexican; 'In' for Indian; 'Ch' for Chinese; 'Jp' for Japanese; 'Fil' for Filipino; 'Hin' for Hindu; 'Kor' for Korean. For a person of any other race, write the race in full." The table below gives the total numbers for each of these categories.
Fifteenth Census of the United States: 1930; Population Volume II: General Report/Statistical Subjects, Washington: US Government Printing Office, 1933, Page 25.
The 1930 Federal Population Census, Catalog of National Archives Microfilm, Washington: National Archives Trust Fund Board, 2002, Page xiii.