Data are presented from the 1986 Fall Enrollment survey, a component of the new Integrated Postsecondary Education Data System (IPEDS), which supercedes the Higher Education General Information Survey (HEGIS). Data are included for responding postsecondary institutions, including a universe survey of 5,901 4-year, 2-year, and less than 2-year (public), institutions and a sample survey of 1,001 less than 2-year (private) institutions. The overall response rate was 78.7 percent. Three fall enrollment survey forms were used for data collection. Data were collected from all four- and two-year schools by attendance status, level of enrollment, and race/ethnicity and sex of student. In addition, the 4-year schools were requested to provide enrollment by selected fields of study. Information is included on status of data, response rates, imputation, data editing, sample design, sampling errors, non-sampling errors, and students included and excluded from the report. A glossary of key terms is provided. Table categories are as follows: all postsecondary institutions, fall 1986; all postsecondary institutions by race/ethnicity, fall 1986; all institutions of higher education, fall 1986; all institutions of higher education by race/ethnicity, fall 1986; and response rates. Contains 19 tables. (SM)