Cancer survivors’ and caregivers’ social networks provide support for managing stress and navigating daily life. Larger, more diverse networks typically confer more stress-buffering connections and resources. Aging, chronic illness, and caregiving are associated with diminishing network size and heterogeneity, yet how these factors relate to perceived support is not well-studied in this population. The objective of this project is to examine the association of survivor and caregiver age, network size, and member heterogeneity (age, relationships) with perceived support.