Normal blood pressure values for an 80 year old are systolic blood pressure at 90 to 139 mmHg and diastolic blood pressure at 60 to 89 mmHg. The normal range of blood pressure is independent of age. As age increases, blood pressure will increase slightly due to poorer elasticity of blood vessel walls, but should still be within the normal range. normal systolic blood pressure for an 80 year old should be in the range of 90~139mmHg, diastolic blood pressure should be in the range of 60~89mmHg, and pulse pressure should be in the range of 20~40mmHg. Normal blood pressure in the range of 90~119/60~79mmHg is normal blood pressure; if the systolic blood pressure of 120~139mmHg and/or diastolic blood pressure of 80~89mmHg is normal high value blood pressure. Normal high blood pressure is more likely to develop into hypertension than normal blood pressure. Elderly people in their 80s are susceptible to hypertension and it is recommended that they have their blood pressure checked on a regular basis, and if there is any abnormality, they should have their blood pressure retested and consult a doctor in a timely manner.