Background: Considerable attention is rightly paid to preventable deaths in adults with intellectual disabilities. The pattern of these deaths and the implications for services have been less considered. Method: This paper forms part of a larger cross-sectional study of deaths in a defined population of adults with intellectual disabilities. Data from VOICES-SF were obtained from intellectual disability service providers for each death within their supported population over 18 months, 149 decedents in all. Results: Only 34.2% of deaths were anticipated, death was often sudden or followed a short illness. Four dying trajectories were identified, and categorized by length of illness, service use, care outcomes, symptom control and cause of death. Conclusions: Recognition that most deaths in this group were unanticipated implies a need for better preparation for less expected dying and better anticipation. A descriptive epidemiology of dying among people with intellectual disabilities is needed.