Globally, in 2010 the number of overweight children under age of 5 is estimated to be over 42 million. Close to 35 million of these are living in developing countries. In developed countries like United States of America, the incidence is 35% in boys and 35.9% in girls. Similarly in UK it is 21.8% and 26.1% in boys and girls respectively. Examination was done in the school premises under the supervision of a senior staff. For taking anthropometric measurements non stretchable measuring tapes and electronic weighing machines (calibrated to +/- 100 grams accuracy) were used. Weight was recorded in kilograms with minimal clothing on, without shoes. The zero error was corrected before each measurement. Our study shows that prevalence of obesity and overweight among the subjects belonging to upper and lower socioeconomic classes were 18.89% and 12.60% respectively. In our study it was found that obesity/overweight was found to be significantly higher in children who consume junk food more than 7 times a week compared to those who consume less than 7 times a week.