MN state and local county campgrounds are open. Most of the visitor and information centers are closed. Some bathrooms are open but, not all. It depends if they have enough staff around to sanitize them several times a day.
I agree with the above posters. You may find it hard to make a reservation, better try now and keep trying, you may get lucky.
All of the local campgrounds are really full. Even ones that are not used often. I suppose since no one can go to a baseball game / concerts or other indoor events like that they are saying "The Heck With It, Lets Go Camping" . I'm not really sure why but, it's been a busy camping season around here. Starting to slow down a little. As it often does after the 4th.