At what age does a woman generally reach menopause?

Nina asked: Does late menopause cause problems? IF yes, then what could be those? Is it okay for a women in mid-fifty to not have reached menopause, if she has no problems whatsoever?
Thanks for replying!

What is the earliest age that a woman can get menopause?

noel1426 asked: I heard that my aunt had menopause at age 35 and was wondering if this could be true.