Background and Objectives: Diabetes has emerged as a major health challenge in India due to a rapid rise in the number of diabetes cases. Early identification of high risk individuals through screening and early interventions in the form of lifestyle modifications and treatment would help in the prevention of diabetes and its complications. This study was done to assess the risk of type 2 diabetes mellitus (T2DM) in an urban slum population using the Indian Diabetes Risk Score (IDRS) and to determine the factors associated with high risk score. Methods: A cross-sectional study was conducted among Department of Gen. Medicine Sri Aurobindo Medical College and Post Graduate Institute, Indore (18 Months). With the institutional ethical committees permission. A total of 100 study participants were selected randomly. A pre-designed and pre-tested structured questionnaire was used for data collection. Assessment of risk of T2DM was done using the IDRS. Results: Of the 100 study participants, 74% were at high risk (IDRS ≥60) followed by 24% at moderate risk (IDRS 30-50) and 2% at low risk (IDRS <30). 45 individuals in the age group ≥50 yr were at high risk compared to 25 in 35-49 yr age group. Most (n=25, 87.5%) of sedentary workers were at high risk compared to those employed in moderate (n=38, 75.4%) and strenuous work (n=10, 51.9%). Interpretation & Conclusions: 74.3 percent of study participants were high-risk for T2DM. High-risk IDRS scores were associated with age, occupation, abdominal obesity, general obesity, and high blood pressure.