Diabetes mellitus is a serious worldwide public health problem due to its high prevalence. In Chile, 1.7 million people have been diagnosed with diabetes mellitus, of which 90% are type 2 diabetes mellitus (T2DM) cases(1). It is well known that blood pressure (BP) control is essential to prevent future complications and to ensure a positive prognosis for this disease (2). Moreover, studies in Chile have shown a significant increase in systolic and diastolic blood pressure (SBP, DBP) levels in T2DM subjects compared to the non-diabetic Chilean population (3). Therefore, this study aimed to determine and compare SBP and DBP levels according to age group in T2DM patients of primary health care centres (PHCC) in Copiapó, Chile.