Friends parents have a 14 acre plot of land with chicken and a pretty sizable garden. They have to give away their eggs in the warmer months as there are too many. Unfortunately they haven't been gardening due to health but the chickens are still going. Most of the lot is wooded and is not difficult to maintain. It's no farm but I imagine it could support a few people.

Edit: forgot to add they have about 25 or so chickens as of now. They have lost one to a fox so have these weather proof radios playing talk radio which keeps them away.