Abstract Background The prevalence of diabetes mellitus is increasing in the developing world; we assessed their prevalence among the rural area of Gazipur in Bangladesh. As no study were previously done in rural area of Bangladesh, this is our first attempt. All the record of diabetic patients in Bangladesh are kept by Diabetic Association of Bangladesh (BADAS). Objective To assay the prevalence of diabetes mellitus (registered by BADAS and not registered from BADAS) in rural areas of Gazipur. Materials and Methods In this cross-sectional survey (n = 932), we randomly selected consenting adults (18 to 73 years) from a middle-income neighborhood in Gazipur. We assessed demography, lifestyle and health status and measured blood pressure. We evaluated two primary outcomes: (1) diabetic patients registered under Diabetic Association of Bangladesh and (2) history of hypertension. Results This study included a total of 932 adults (693 males and 239 females) aged between 18 and 73 years. Majority of the participants were married (92.2%). More than half of the participants either had diabetes mellitus (51.4%) or hypertension (54.5%). Out of the diabetic patients, 38.2% were registered under Diabetic Association of Bangladesh. Conclusions The prevalence of diabetes mellitus among the rural area of Gazipur is alarmingly high. Screening services should be implemented while researchers focus on strategies to lessen the incidence and morbidity associated with these conditions.