Purpose: The aim of this study was to clarify the actual condition of elders with dementia who were registered in the Seoul Dementia Management Project. Methods: Data were collected from 5,312 elderly patients with dementia. Demographic included characteristics, comorbidity, and healthy lifestyle habits; data from the Seoul Dementia Management Project. Results: First, demographic characteristics were as follows; mean age at the time of definite diagnosis was 78.0 yr. There were slightly more women (69.3%), and 4.55 yr was the average length of education with 41.4% being illiterate or uneducated patients. Second, there were several comorbidities including hypertension (61.7%), diabetes mellitus (31.8%), hypercholesterolemia (10.2%), heart disease (11.1%), obesity (4.2%), and stroke (21.4%). Third, alcoholic history was found in 11.8% of the patients, and smoking in 9.8%. Regular exercise was done by only 29.1% of the patients with dementia. Finally, significant differences between men and women were found for the following; age, education, medical security, hypertension, diabetes mellitus, stroke, alcoholic consumption, smoking, and regular exercise. Conclusion: Authors expect that the present data will be used for establishment of dementia associated projects and policies.