So I found this site called
howmanyofme.com, and you type in your first name, and your last name, put that you're over 13, and it goes to the next page. On that page, it tells you how many people in the US have you first name, and how many have your last name, and how many people have both your first and last name.
You don't have to tell anyone either of your names, of course. Just post how many people have the same name as you. :]
As for me..evidently..
ïThere are 205,881 people in the U.S. with the first name Alexander.
ïThere are 213,914 people in the U.S. with the last name Cole.
ïThere are 143 people in the U.S. named Alexander Cole.
I don't know how good that is, exactly. I think it's kind of unique, though.