Background: Polycystic ovary syndrome (PCOS) is a hormonal disorder affecting reproductive age group women characterized by irregular periods, acne, excess facial and body hairs, male-pattern baldness, acanthosis, mental disturbances include depression, anxiety, disturbed sleep and infertility. Many a times the PCOS was diagnosed when there is a difficulty to get pregnant. Materials and methods: Cross sectional study was conducted to assess the PCOS and its risk among adolescent girls. Results: Study results show that 167 (45.9%) of them in the age group 18 years, more or less similar percentage of them were from arts and science background, highest 208 (57.1%) of the attained menarche at the age of 12 to 13 years, 340 (93.4%) of there were Hindus, 314 (86.2%) of the were non-vegetarian, 150 (41.2%) of them had monthly family income Rs. 10000-15000, 224 (61.5%) of them were live in Urban area, 59 (16.2%) of them got previous information about PCOS. Clinical characteristics of adolescent girls depicts that 32 (8.7%) of them had personal health problems, 13(3.5%) had PCOS, 4 (1.09%) had thyroid problem, 10 (2.7%) had asthma and wheezing, 42(11.5%) had family history of PCOS and 140 (38.5%) had family history of DM. Highest 210 (57.6%) had low risk and only 2 (0.54%) had high risk for PCOS. BMI reveals that 180 (49.4%) had normal BMI, 105 (28.8%) had underweight 59 (16.2%) had overweight and 20 (5.6%) had obesity. Positive correlation found between PCOS and PCOS risk with BMI (r = 0.526 & r = 0.342) at p < 0.05 level. significant association found between PCOS and dietary pattern (p = 0.001) and risk of PCOS and family history of PCOS (p = 0.001) at p < 0.01.