Abstract Background: Public programs that provide access to essential medications have played an important role in the care of hypertensive and diabetic patients. However, access in small municipalities has been poorly studied. Objectives: To describe the sociodemographic profile and the medication and health service usage of patients with systemic arterial hypertension and/or diabetes mellitus in a small municipality who use the public medication access programs Health has no Price (Saúde Não Tem Preço - SNTP) and the Minas Pharmacy Network. Methods: This cross-sectional study with 341 participants was conducted in 2019. Home interviews were conducted using a standardized, semi-structured questionnaire. The data are expressed as absolute and relative frequencies, and Pearson's chi-square test was used for comparisons between proportions (α = 5%). Results: Most of the participants (70.68%) had hypertension only, 11.14% had diabetes only, and 18.18% had both. Regarding the origin of the hypertension medications, 82.67% were provided by the Minas Pharmacy Network and/or SNTP programs. Regarding oral hypoglycemic agents and insulins, 88.61% were provided by the Minas Pharmacy Network and/or SNTP. Most participants were female (63.1%), at least 65 years of age (50.30%), non-White (66.96%), resided in an urban area (67.16%), were illiterate or had a low education level (89.94%), and had a maximum income ≤ 2 times the federal minimum salary (89.19%). Overall user perception was significantly better for SNTP (p=0.010). Conclusion: The results of this study indicate that programs which provide access to essential medications are important sources of hypertension and diabetes medications in the study area, especially for people with low incomes.