No need to worry about anonymity...

My given name is Elizabeth Miller. Back in the days when I had insurance through Giant HMO Inc., they always had a hell of a time finding my records asking first for my name, middle initial and zip code before they finally got down to sorting by the birthday field, so I already new there were well over 1000 people in this country with my name. But it's much better then that, you see, as long as I keep quiet about my zip code, my privacy is practically guaranteed! Mwa, ha, ha, ha, ha!

HowManyOfMe.com

There are: 5,959 people with my name in the U.S.A. How many have your name?

Hat tip: Alpha Bitch What's in a name?