Aim: In this study, it was aimed to investigate infectious disease frequency, most admission compliant, consultation type, the outpatient and hospitalization rates in geriatric patients who admitted to emergency department. Material and Method: Identification study was applied with computer based patient registration scan in 65 years or older patients who admitted to emergency department between 01.01.2011-31.12.2011. Results: Data of 115185 patients were evaluated for one year period. Geriatric patients were consist with amount of 1467 (12.7%) of total admission. Diagnosed patients number was 310 (21.2%) in this age group according to the ICD -10 coding on infectious diseases. One hundred and sixty eight (5.4%) of 310 patients were hospitalized. Eighty nine of these patients were hospitalized at infectious disease and clinical microbiology clinic, seventy nine patients were hospitalized at other clinics. Discussion: It is known that elders are at higher risk for infections and diseases are more common due to the cellular immune deficiency. Therefore, immediate treatment should be applied with rapid diagnose in elderly infections.