Background: Depression among family caregivers is becoming an increasingly important issue due to a growing elderly population. This study aimed to examine the association of living with a patient with dementia and family caregivers’ depressive symptoms, among Korean adults. Methods: This study used the data of 371,287 participants after excluding those who indicated having dementia themselves from the Korea Community Health Survey of 2018–2019. Depressive symptoms were measured using the Patient Health Questionnaire-9.