This dementia epidemiology fact sheet 2022 is aimed at providing an overview of the epidemiology of dementia in Korea using representative government-led data. This review summarizes the prevalence and incidence of this condition using various types of data. The prevalence and incidence of dementia have increased and are predicted to continue to do so. This information will be utilized by public health officials, healthcare professionals, and policymakers to develop strategies for dementia rehabilitation and prevention.