My guess is if they're described like that, they're hormone free. You could also check with the store you buy them from. They may know. My HFS usually has a brochure from some of the milk, dairy and meat suppliers.
I like eggs too. I think that it's been proven they don't cause cholesterol now, which was the main concern with them at one time. They are a tad fattening, but overall, it's a good fat, and they're an excellent, cheap source of protein. I say, eat up!