What is the normal blood pressure for the average 20 year old woman?

120/80 or less: Most "normal" folks your age have blood pressures in this range.

Blood pressure: Blood pressure fluctuates for a variety of reasons, even in someone twenty years old.

Blood Pressue: Most everyone, despite age, should be able to achieve a blood pressure of at leat 120/80. At your age even lower. In older people this might mean taking medication and for younger people with certain conditions.

120s/70s: Some womens' blood pressure tends to run low. However normal blood pressures are up to 130/80 and high normal is up to 139/89.