This two-part report provides data from the 1980 Census Supplementary Questionnaire for American Indians, Eskimos, and Aleuts for the United States, census regions, standard federal administrative regions, divisions, selected states, American Indian reservations, historic areas of Oklahoma, and tribal governments and selected tribes in Oklahoma historic areas. Data on tribal enrollment, race, age, and sex are given by tribe, identified reservation, census regions, divisions, selected states, standard federal administrative regions, and historic areas of Oklahoma. Summary data are provided by reservation and by Oklahoma historic area counties and tribal governments for family, social, health, labor force, income, poverty, and housing characteristics. Detailed data by reservation are provided for education, household, and family, migration, labor force, occupation, class of worker, and industry, income, poverty and health characteristics, and benefits received in 1979 and for occupancy, utilization, structural, plumbing, and equipment characteristics of housing units. Detailed data by tribal governments and counties in the historic areas of Oklahoma are provided for household and family, educational, labor force, income, poverty, health, occupation, class of worker, and industry characteristics and for occupancy, utilization, structural, plumbing, and equipment characteristics of housing units. Pre- and post-allocation data and percentages are given for race, sex, age, family, housing, educational, and labor force characteristics. Explanations of area classification list, enumeration/processing procedures, and data accuracy are appended. A map of Oklahoma historic areas and a facsimile questionnaire are included. (LFL)