It's pretty hard for any site these days (especially the big ones) to stop fake profiles and scammers from signing up, but I think I get what you're after.
The last one I haven't actually reviewed fully, but the site owners took the time to add a profile on this site.
Here's where you can meet singles in California City, California.
Our Kern County singles are in the 760 area code, and might live in these or other zip codes: 93505, or 93504 personals.
Stephen asks: "I am trying to find a 'real' adult dating site. The people on there either do not exist or are trumped up.
It seems all that I have come across do not have real/true information... I sent the company an email to complain, but they didn't reply.
And when I clicked on a picture, the city and/or state changed to someplace nearby... There has to be a legitimate adult dating site out there. "Hi Stephen, and thanks to my colleague Cory Silverberg (About.com's Guide to Sexuality) for sending you my way.
To answer your question: it depends on what you mean by legitimate.
Are you looking for an adult dating site that caters to adult encounters or casual sex, that isn't full of scammers or fake profiles?
If that's the case, I'll admit its pretty hard to find.