In 1996, of 68,473 persons aged ≥13 years reported with AIDS, 7459 (11%) were aged ≥50 years; this proportion has remained stable since 1991. Of those aged ≥50 years, 48% were aged 50-54 years, 26% were aged 55-59 years, 14% were aged 60-64 years, and 12% were aged ≥65 years. Males accounted for 84% of cases, and blacks accounted for the highest proportion (43%) by race/ethnicity. Although men who have sex with men (MSM) accounted for the highest proportion of cases by exposure category (36%), compared with persons aged 13-49 years, a higher proportion of cases among persons aged ≥50 years were reported without risk information (26%). For both age groups, the highest proportions of cases were in the South (35% and 37%, respectively) and Northeast (32% and 30%, respectively).