As part of a comprehensive environmental scan prepared by Prince George's Community College (PGCC) in Maryland, this report focuses on trends in PGCC's market share, student recruitment and retention, and enrollments. The first section offers a market share analysis, examining the full-time, part-time, and new full-time undergraduate market shares of selected schools from fall 1982 to 1985; and highlighting new full-time Black undergraduate market shares. After analyzing sources of fall 1985 students, the report uses the component yield method to project fall headcount and credit hour for fall 1986 and 1987. The next section offers findings from a statewide community college study of student retention in fall 1980, 1981, and 1982, contrasting retention at PGCC with state norms and analyzing minority student retention patterns. Finally, data displays are presented, covering: (1) market shares in terms of community college share of state enrollment, trends in full- and part-time market shares, full and part-time enrollment of county residents, enrollment of new full-time freshmen, and first-time, full-time enrollment of black students; (2) sources of students, analyzed in terms of residence and load, actual and projected enrollment of county high school graduates, and component yield method forecasts for 1986-87; and (3) findings from the statewide student retention study including data on 1980, 1981, and 1982 cohorts. (LAL)