Objective : Homeless patients probably have epidemiologic features that are different from those of general population. However, there have been no published articles about clinical characteristics of neurosurgical homeless patients. The authors tried to assess the clinical characteristics and treatment outcome of homeless neurosurgical patients. Methods : We retrospectively reviewed the medical records and radiological films of 76 homeless patients and 72 non-homeless patients following head trauma who were admitted to our neurosurgical department between June 2001 and June 2005. We compared two groups of the patients with the demographics, the clinical and laboratory characteristics. Also, 3D-day mortality was determined according to Glasgow Coma Scale (GCS) score. Results : Age of homeless patients was younger than that of non-homeless patients. Homeless patients had previous craniotomy evidences in skull x-rays more frequently (10.5% vs. 1.4%). Acute subdural hematoma was the most common type of head injury in the two groups. Moderate and severe head injury, based on GCS score on admission was more frequent in homeless patients (64% vs. 39%). Fifty percent of homeless patients underwent operation for traumatic head injury. However, 3D-day mortality according to GCS score was not significantly higher in homeless patients. Conclusion : Most homeless neurological patients were relatively young men. Also, moderate or severe brain injuries were observed more frequently. However, mortality rate of homeless patients in neurosurgical field is not significantly higher in the present study.