The estimates in this report are the product of research conducted over the past decade. They represent an extension of the Administrative Records method, the newest of the estimating techniques used at the U.S. Census Bureau for producing population estimates. Two chapters are devoted to a detailed discussion of the methodology used to derive the estimates that are presented in the remaining chapters. One chapter is devoted to trends in the Black population, one to trends in the "other races" population, and one to trends in the Hispanic population, all for the period 1980 to 1985. Fifty-one tables provide detailed statistical information. Highlights of the report include the following: The Black population in the United States experienced an 8.3 percent growth rate between 1980 and 1985. The "other races" population increased 36.1 percent in that time span, due largely to international immigration. The Hispanic population increased by 22.9 percent over the same period. The South continues to have both the greatest number of Blacks and the greatest proportion of total population that is Black. The "other races" population constitutes a much greater share of the total population in the West than in other parts of the country. California and Texas contain almost 55 percent of the Hispanics in the country. More than 10 percent of the nation's Black population lives in the New York City metropolitan area. By 1985, greater Los Angeles had become the first U.S. metropolitan area to have an "other races" population in excess of one million. Over one-half of the Hispanic population in 1985 lived in seven metropolitan areas, with Los Angeles having by far the largest concentration. This document presents primary data for use by teachers in developing lesson plans or by students working on individual or group projects. (JB)