West South Central. Mountain. and Pacific States. This number represents an increase of fivetenths of 1 percent over the number enumerated in 1930. which was 332.397. The Indian population enumerated by the Census Bureau is somewhat smaller than that reported by the Office of Indian Affairs on the basis of their registration records. Because of differences in definitions used by the two agencies and differences in methods of collecting the statistics. it is quite probable that many persons classified as Indian by the Office of Indian Affairs are returned by census enumerators as Negro or white. The Asiatic racesChinese. Japanese. Fillpino.