Like the others have said, I don't think most would care. A circumcised and an uncircumcised penis are basically the same when erect. I've heard of a few girls being freaked out by a flaccid uncircumcised penis, but that's probably because they aren't too common here. They probably wouldn't mind after they get used to it.
But I'm not going to lie here -- some girls do have preferences. Some even prefer uncircumcised, and there are others who don't. But, like you may have preferences about a girl's breasts or whatever, you probably won't let that get in the way of dating a nice, fun, person. If there are girls who don't think like this, then you probably wouldn't want to be with them, anyway.