I never really thought of it as dated, because I know 3 people with this name, and one with it as a middle name. Only one of them is older than me, and they're my friend's mom. Her name is
Kimberly, but goes by
Kim. A girl in my school has the name
Kimberlyn, which I always kind of liked. I met her a long time ago, before ever meeting anyone by the name of
Kimberly. This girl goes by
Kimberlyn,
Kim, or
Kimmy. The other girl is a year younger than me, and people call her
Kimmy, and her full name is
Kimberly. Then my friend,
Abigail, has this as a middle name.
I don't like
Kim or
Kym alone or on a boy. I actually think
Kimberly or
Kimberlyn are pretty names for girls. I don't think it's dated, and probably wouldn't use it, but wouldn't mind seeing it on a baby these days.