$19/hr for new grads is correct, and the cost of living is pretty low in Louisville. There are lots of hospitals in the area, so you'll have no problem getting a job. You can Google these for a start:
Kosair is the level 1 trauma peds hospital. Great people working there, and they are a Magnet hospital.
Norton owns Kosair, as well as a couple other hospitals (Audubon, Suburban), medical groups, and intermediate care centers. I'm partial to Norton downtown, though. The ratios there are great, because it has was built with lot of 10 bed pods. Plus, the people there are extremely likeable.
If you want to do adult level 1 trauma, check out U of L hospital. I worked there for years, and loved it before I got burned out on trauma. The ER is top notch, and extremely busy. They're the only level 1 in the region. If you're a type A personality who likes to run on adrenaline, then that's the place for you. They've got some of the smartest nurses I've ever known there, too.
There's also Jewish Hospital. They're a private hospital, though- and extremely customer service oriented. Not my cup of tea, since most of my experience has been in non-profit hospitals, but there are some nice people there.
There are more hospitals, but that should get you started on a job search. All of the above have websites that can tell you more. Good luck!