Background: Overweight and obesity are significant public health issues in developed and developing countries, not only for adults but also increasingly for children. The issue of body weight as a risk factor for chronic diseases such as diabetes, heart disease, stroke and cancer has increased dramatically over the last decade in India. For this reason this kind of research was important to promote the healthy life of populations. Mrthodology: The present investigation retrospectively studied the prevalence of BMI level in youth populations of various areas of Perambalur district, Tamilnadu, India during the period February 2018 to April 2018. Body mass index (BMI) was determined by the standard procedures. Results: A total of 363 participants were included in this study. In these population 63.82% were females and 36.19% were males. The frequency of BMI distribution was normal range (18.5 to less than 25.0) were 80%, underweight (less than 18.5) were 12.1% overweight (25.0 to less than 30.0) were 5.5%, class I obesity (30.0 to 35.0) were 2.4%, respectively. Conclusion: Based on the results, it was concluded with the prevalence of normal level of BMI was high among the youth populations of Perambalur district, Tamilnadu, India. It demonstrate the healthiness of the young populations.