Abstract: The epidemiology of diabetes mellitus was studied in and around Faisalabad, Pakistan. The age of diabetic patients ranged from 5 to 82 years. The mean (SD) values for age, age at diagnosis of diabetes and duration of diabetes were 50.798(13.449), 44.086(13.163) and 6.744(5.668) years respectively. The most frequent age, age at diagnosis and duration of diabetes was 45, 40 and 10 years respectively. Family history of diabetes was observed in 25.962% patients. There was no association among family history, age at diagnosis of diabetes and gender. Prevalence of obesity was 28% while 30% diabetic patients were lean. In obese group a high prevalence of female patients (79.310%) was observed as compared with males (20.689%). Type 2 diabetes was (98.077%) the most prevalent type and was more common in females. Preponderance of females (86.207% vs 13.793%) was found in age group of 35-44 years based on age at diagnosis of diabetes. Any kind of late diabetic complications were observed in 76% diabetic patients. Finally obese females with diabetic history in their families should be diagnosed for diabetes during 35-44 years of age. This practice may be of great help in early diagnosis and then after proper management of diabetes.