Interstitial lung disease (ILD) is a group of heterogenous lung disease caused by inflammation and fibrosis of alveolar walls.Due to variety of clinical presentations, lack of awareness, misdiagnosis and under-reporting, it is difficult to estimate the true prevalence of ILD in our country. But as the complexity of lung disease is increasing after covid pandemic now it is important to detect true prevalence. Patients & Method:This is cross-sectional study where the clinical history, lab findings data of the subjects were assessed retrospectively during period from 2019 to 2021. All data were collected from past medical records and the study was approved by Institutional ethics Committee, IMS & SUM Hospital,BBSR. Result & Discussion: IPF was the most common ILD followed by RA-ILD and Dyspnea is the most common symptom.Female prevalence rate is more compared to male. In HRCT finding UIP pattern is common followed by NSIP pattern. Conclusion :ILD is a progressive, irreversible and heterogenous disease, early detection and prevention holds utmost importancealso there were pre-existing or newly developed co-morbidities that hampered the course of the disease. Our study data may aid in early and prompt diagnosis based on the prevalence data.