It depends on a large number of factors - you socio-economic circumstances (ie your class and wealth); your race (there are wide variations even within each "race" as the huma…n population continues to diversify); your country of birth (not related to your race, obviously); the country you grew up in (again, not related to any of the above)... so many factors, in fact, that there is very little in the way of a true average. However, if I assume you are what I assume to be the most likely profile for users of most internet sites - a white guy, relatively wealthy, American-born and raised, of western European descent with parents of a height that is within the median range - then just over 5ft 6in would be "normal". But please see the many disclaimers to this above! If you are more than 8 inches above or below this amount, and fit the pattern above, then it wouldn't harm to see your GP/HMO and ask for a test of your pituitary function. Otherwise, you are most likely entirely average. .
See the Related Links for "Average height and weight charts for Americans" to the left for more information on average heights. The average weight you should be depends on so very many variables as to make listing a figure here a poor idea. The charts linked to the left may help you with your own circumstances. . (MORE)