This issue is actually fundamental to human existence, that of community framework. The problem was introduced 1700 years ago when Constantine the Great started laying claim to all of the land, and forcing indigenous tribes to pay him property taxes. They could no longer simply trade with each other. They had to go out and earn currency with which to pay taxes. Taxes are a cancer to community. But I digress.
The point is that like it or not we are all subjects to the government enforced framework in which we live - there is no avoiding it for now - don't pay taxes, or violate county, state, or federal laws or ordinances, and you will have to pay, or lose your land. So my question is, instead of trying to fit a square plug into a round hole, why not simply get in tune with the reality in which we find ourselves, and master it?
Instead of planning a community within a community, why not simply identify an existing county with few residents, then organize a large group of people to purchase their own properties in that county. Then you can put like-minded people into all of the county government positions, and change the actual laws to be in accordance with how you all want to live. You could lower property taxes, and establish public lands for shared farming. Everything could be legally voted on, the framework is already in place. The primary flaw in the system is that there are too many people with too many varied agendas in the average county, and even at the county level, the sort of people drawn to public office tend to be self-serving. But a smaller county packed with people who have the same agenda could be amazing. It would take a lot of planning, but that's the case with any project.
I'm wondering why nobody has done this.
Step1: Devise a detailed plan which would be something along the lines of the following...
Step2: Identify a U.S. county in a favorable state with low population and/or many residents already on board.
Step3: People on board with the plan begin buying property/moving to the county.
Step4: Continue to advertise the plan, and post progress, in order to draw more like-minded people to the county.
Step5: Everyone on board with the plan should get as involved as possible in local government to get as many existing residents on board as possible while continuing to attract like-minded outsiders to the county.
Step6: Eventually, as more county government positions are filled by like-minded people, they can establish and encourage farmers markets, organic-friendly regulations, reduce taxes and redirect tax revenues toward actual community projects.