Objective: To identify and analyze significant factors influencing length of stay (LOS) in public residential care facilities in Indonesia, to support deinstitutionalization efforts and optimize care resources. Methodology: An analytical observational design was applied, involving 215 respondents diagnosed with schizophrenia (F.20 and subtypes) residing in public residential care institutions. Data on demographic characteristics, clinical conditions, and family support were collected through medical record reviews and structured interviews. LOS was categorized into ≤12 months and >12 months. Bivariate analysis was conducted using Chi-square and Fisher’s exact tests, followed by binary logistic regression to identify independent predictors (p≤0.25 included; α=0.05). Results: Bivariate analysis identified gender, age, mar ital status, and employment status as potential predictors. However, multivariate analysis revealed that only marital status was significantly associated with LOS (p=0.044). Married individuals were more likely to experience prolonged institutionalization, with an odds ratio (OR) of 0.05 (95% CI: 0.003–0.92). Age, gender, and employment status were not statistically significant (p>0.05). Conclusion: Marital status emerged as a key factor influencing institutional LOS among people with schizophrenia. These findings underscore the importance of integrating family readiness and psychosocial support into discharge planning to facilitate deinstitutionalization and community reintegration. © 2026, Pakistan Medical Association. All rights reserved.