Objective: The aim of this study was to investigate admissions to a psychiatry outpatient clinic in an urban area through one year period and analyze sociodemographic characteristics, diagnosis, and treatment protocols of individual patients with an emphasis on age and gender. Material and Method: Patients who applied to University of Health Sciences, Ankara Numune, Education and Research Hospital Kolej Psychiatry outpatient clinic between February 2016 and February 2017 were included in the study. The patient files were retrospectively reviewed in terms of sociodemographic characteristics, diagnoses, treatment protocols and the number of admissions within one year. Results: Retrospective evaluation of hospital records yielded 1247 patients. Among these patients, 66.5% were female and 85.2% were under 65 years old. The most common diagnoses were depressive and anxiety disorders with a percentage of 42% and 40.3%, respectively. Anxiety disorders (66.4%, 33.6%, p<0.001, respectively), depressive disorders (72.7%, 27.3%, p<0.001, respectively) and somatic symptom disorders (90.9%, 9.1%, p=0.007, respectively) were significantly more frequent in females compared to male gender. On the other hand, all psychiatric diagnoses except normal psychiatric examination were significantly higher in patients <65 years old compared to patients ≥65 years of age. There was a positive and moderate correlation between age and number of comorbid conditions (r=0.57, p<0.001) and positive and weak correlation between age and number of psychiatric medications (r=0.07, p=0.006). However, there was no correlation between age and number of control visits. Conclusion: Depressive and anxiety disorders were the most common diagnoses both in adult and elderly patient populations among patients who admitted to a district outpatient clinic of a tertiary hospital within one year period. Female gender admissions were more prevalent than males.