Couple going cross country hoping to visit Eco Villages/Intentional Communities etc

Hi there, my fiancee and I are traveling in the west, but about to move permanently to the Philadelphia area.

On our way east we want to visit eco villages/intentional communities/co-housing situations and chat to them about how it all works. I was wondering if anyone here knew of anyone that would be worth looking up? We are most interested in how people create structures around sharing their space, resources, and the social dynamics of living in the community, particularly in a rural setting.