Objective: the aim of this study was to identify factors associated with family functionality of non-institutionalized long-lived subjects, who were residents in Goiânia (GO), Brazil. Method: this was a population-based epidemiological study with cross-sectional outline. Evaluation scales of the functional and cognitive capacities were used. Family dynamics was measured using the Adaptation, Partnership, Growth, Affection, and Resolve (APGAR) instrument by making home interviews with 131 long-lived individuals. Results: there was prevalence of the female gender, average of age of 83.87 years old, widowhood condition, and residence in a big family, primary schooling, and self-perception of regular health. A great amount showed independence for self-care and partial dependence for daily life instrumental activities. Family functionality prevailed with score average of 9.06 points. Conclusion: in conclusion, family functionality in long-lived subjects is associated with self-perception of poor/bad health, osteoporosis, and fall. Results allowed characterizing long-lived subjects' family functionality with the aim of valuing and prioritizing family as a caregiver.