What is the average weight of a 21 year old women ?

Look at wt for ht: The average weight of the entire nation and western world has increased dramatically over the last 20 years. What might be more useful would be what a healthy weight would be. Look at the bmi (body mass index) which takes into account height and weight and gives a range of "normal" http://www.Nhlbi.Nih.Gov/guidelines/obesity/bmi/bmicalc.Htm.