There is always a lot of discussion about growing hops. The one thing to keep in mind is the ability to determine alpha levels in a home grown hops can be somewhat time consuming and not the most reliable. So to brew that favorite throw down with any certainty of replication may be hard. Go here for one method: How To - Determine Home Grown Hop Alpha Acid Levels - AussieHomeBrewer.com
We don't have them most ideal climate but hops seem to grow just fine here. I'm sure it's like anything else. Some crops grow marginally better somewhere else and if there isn't enough demand here for the crop then there's no reason to start producing it.
We have wild hops on our farm in Salem, and I know of some wild hops near Bloomington. They've been there for years, and the ones on my farm were there whan my grandad was born in 1923.
Don't know the variety for sure, but I'd say that they are close to hallertau.
I plan to plant some cascades soon.
So I'd say that Indiana is great for hops.