The heights and weights given in the PHB aren't gender specific. The shorter heights and lightest weights given for humans could be "typical" values for human females; the same might also apply to eladrin and elves (who are both described as essentially having the same build as slender humans).
So, here are the stats from the Forgotten Realms wiki:
For elves - height 5'4-6'0 (163-183) and weight 130-170 (59-77) For eladrin - 5'5-6'1 (165-185) 130-180 (59-82)
In fact they don't seem as bony as typical fantasy elves. That's strange. I'm 5'6 (168) and my weight is 130 (59) and I'm a plump girl (but I like my figure, of course). Does that mean that female elves from the Realms are plump? Or there are many different types of figure?
Well, assuming the stats are for adventurers who are assumed to be in pretty good physical condition, its likely most of that weight is going to be muscle mass, which being heavier than body fat would allow them to be slimmer while still weighing more.
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