In Oregon in general, Recode Oregon is a great resource, with relevant activities re code issues in diverse parts of the state:
http://www.recodeoregon.org/

Portland is buzzing with related activity. At least seven Cohousing groups listed in the CohoUS directory, find them here by scrolling down to Oregon:
https://www.cohousing.org/directory

The FIC site has a directory of intentional communities, here’s Oregon’s listing:
http://directory.ic.org/intentional_communities_in_Oregon

Some particular ones I know of include Tryon Community:
http://tryonfarm-org.cftvgy.org/share/

Columbia Ecovillage:
http://columbiaecovillage.org/

Kailash Ecovillage in SE:
http://www.kailashecovillage.com/

City repair (founded and still headquartered in Portland) may have info on ecovillage activities as well, plus being a live example of reclaiming the commons and asking for forgiveness rather than permission:
http://cityrepair.org/