BACKGROUND: Diabetes Mellitus is a complex chronic illness that has increased significantly around the world and is expected to affect 628 million in 2045. Undiagnosed type 2 diabetes may affect 24% - 62% of the people with diabetes; while the prevalence of prediabetes is estimated to be 470 million cases by 2030. AIM OF STUDY: To find the percentage of undiagnosed diabetes and prediabetes in a slice of people aged ≥ 45years, and relate it with age, gender, central obesity, hypertension, and family history of diabetes. METHODS: A cross sectional study that included 712 healthy individuals living in Baghdad who accepted to take part in this study and fulfilling the inclusion and exclusion criteria. RESULTS: From total 712 healthy participants, 373 (52.4%) screened negative for diabetes, 178 (25.0%) screened positive for diabetes and 161 (22.6%) had impaired fasting glucose. There was significant relation with central obesity, family history for diabetes and hypertension. CONCLUSION: It was concluded that screening for type 2 diabetes and prediabetes is reasonable, both conditions are common in people living in Baghdad and should be considered especially in people aged ≥45 years and those who are obese, have hypertension, and have a positive family history for diabetes.