Does it cost to enter park if you have out of state plates?

There is a fee for in-state and out-of-state entrants.

Yes as the person above me said even if you have a state park pass they always charge a gate fee

Yes there is a fee even for Indiana residents. I would highly recommend going to their website it should be loaded up with all kinds of more helpful information. I got one think the park is well worth more than what it costs to gain entry. My family and I had an absolutely amazing time!

Yes, there is a charge for everyone. But if you visit indiana parks often the annual pass is well worth the cost.