A study was undertaken at the City College of San Francisco (CCSF), in California, to examine the decline in credit and noncredit enrollments from 1991-94 and determine possible reasons for the decline. Over the period, credit enrollment declined 32,406 in fall 1991 to 25,709 in fall 1994, while noncredit enrollment declined from 34,589 to 27,200. Credit enrollment declined for all age groups, with the 50 and older age group experiencing the largest percentage drop at 33.7%, and for all ethnic categories, with white students experiencing the highest drop at 34.3%. Noncredit enrollment declined for all age groups except the 50 and older age group, with the highest percentage drop in the 19 and under age group at 42.6%. Noncredit enrollment declined in all but two ethnic categories, American Indian/Alaskan and Other, Non-White), with Filipino students experiencing the largest percentage drop at 43%. In addition, first time student credit enrollment dropped 32.6%. Factors contributing to the enrollment decline include the following: (1) the location of noncredit classes affected enrollment due to migration of immigrants to different parts of the city; (2) drops in Asian and Hispanic noncredit enrollments may be due to current immigration policies; (3) the San Francisco population is older and may take fewer credit courses; and (4) a drop in the unemployment rate may have contributed to fewer enrollments. Data tables are appended. (TGI)