Background: Hospital based reports do not reflect prevalence of psychiatric morbidity in the community. Even the lack of knowledge and stigma associated with mental disorders cause hindrance to avail hospital services. Community based survey in a well defined sample is the right and appropriate approach for proper estimation of prevalence of such illnesses. Aims: To estimate the prevalence of psychiatric illnesses in the community and to study the socio demographic co-relates of the positive cases. Methods: 10% of participants from the pool of three thousand (3,000) respondents recruited for World Mental Health (WMH) Survey were selected, by using systemic random sampling method and psychopathology was tested by using the translated Assamese version of Schedule for Clinical Assessment in Neuropsychiatry (SCAN). Results: The prevalence of psychiatric morbidity in the community was found to be 13.18%, with Alcohol Use Disorder being the most common psychiatric morbidity. Conclusion: Alcohol Use Disorders are the commonest psychiatric morbidity (4.39%) in the study population followed by Depression (3.38%), Anxiety (1.69%) and Psychosis (1.69%). The figures reflect only the point prevalence of the diseases.