There are a few of us in MN. I finished my PDC back in 2007. I am in Cottage Grove. You can volunteer over at Sam Kedem's farm in Hastings in exchange for free produce!! I haven't done it yet, I volunteer at Natura Farms. I might have to try out Sam's sometime too. I have only been there once to buy some fruit trees from him. But he has fruits and vegetables and chickens. So volunteering will likely get you doing some cool things and some free food to boot.
Many who know permaculture here live in MPLS. And quite a lot in Wisconsin. I havent met anyone on this side of the cities who was into permaculture.