Ok, lots to respond to here so I'll do my best.
I have 3 main areas I hunt. One wet swamp/bog with uninterrupted woods to the south. On this property I can access from the east or the west depending on what the wind is doing, It has scattered oaks, and hazelnuts scattered throughout, so I hunt the edges of swamp and where the higher ground meet.
There's a private place with a corn field that hasn't been touched. There's a doe with a fawn there, but the land owner is partial to them, and I'd rather not shoot them anyway.
Last is a big (1500ish acers) plot of public, but the dnr has been busy slashing and burning it for 2 years making it ready for grouse. This area also sees a ton of pressure from small game hunters, and more and more deer hunters. I have no idea what thier success rate is like.
I'll admit to not being very savvy on what deer prefer for food as the season progresses. I find beds, scrapes/rubs and the obvious food sources (acorns, ag fields) and try to set up to catch them as they move from one to the other (wind permitting).
If I was getting busted by deer a lot I would at least know I was in the right area, but I see between 3 and 10 deer a season. And these are usually the ones that wind me, or I bump as I walk in.
And lastly (I think) 3.39 deer per square mile is accurate. The highest in the state is just over 7.5ish, and as low as .2ish.