Introduction: Head trauma constitutes a major part of public health problem worldwide particularly among the young population. Computerized tomography is the recommended first line imaging modality to identify injuries associated with head trauma. On previous studies magnitude of head injury was studied based on clinical diagnosis and associations were seen with male gender, young age and lower Glasgow Coma Scale (GCS) status. Road traffic accidents and assault were the two commonest causes with variation across studies. But little is known about magnitude of head injury using computerized tomography and how clinical characteristics and other factors affect magnitude of traumatic head injury using CT imaging. Materials and Methods: This cross-sectional study with prospective data collection involved 324 patients with head injury imaged with computerized tomography at FHSH from Miazia to Nehassie 2014 E.C. CT findings and clinical information were collected using well-structured questioner. The data were entered, cleaned and checked using SPSS version 23. The recorded data were analyzed using descriptive analysis and logistic regression. Results: Majority [71%, 95% CI (66-76)] had CT positive findings with 57.8% had more than one findings. Skull fracture was the commonest finding seen in 156(48.1%) followed by contusion seen in 118(36.4%). Males were involved in 78.7% of the cases, making male to female ratio of 3.8:1. The age range 20-40years was the most frequently affected group, (74.4%). Assault was the mechanism of injury in 188 (58%), RTA in 94(29%), and fall accident in 42(13 %) of injuries. Age range 20-40[AOR=3.3; 95%CI (2.27- 4.87)], male gender [AOR = 3.86; 95%CI (1.12-13.19)], rural residence [AOR = 3.14; 95%CI (1.13-8.72)], history of loss of consciousness [AOR = 10; 95%CI (3.16-32.1)], vomiting [AOR = 13.93; 95% CI (1.8-107)] and alcohol consumption [AOR = 5.81; 95%CI(1.03-32.6)] were significantly associated with positive CT scan findings. Conclusion: This study has found that most head injuries have positive CT findings. Young male patients, those who came from rural area and those having history of loss of consciousness and vomiting are at increased risk of head injuries with positive CT findings. Therefore computerized tomography service for evaluation of traumatic head injury patients should be available in health care centers and decisive measures should be taken to decrease head injury as it mainly affects productive human force. Key Words: Traumatic Head Injury, Mechanism of Injury, fracture, computerized tomography, assault