Environmental community organizations

This article provides a list of active citizen-organized environmental community organizations that serve particular cities, towns, unincorporated area, and similar jurisdictions or regions in the United States and worldwide. Locations are listed in alphabetical order by state with associated organizations included in the line entry.
Greece.
Kalamos Island Kastos Island, Terra Sylvestris (http://www.terrasylvestris.org)
United States.
Maryland.
The Dirty Hands Club -DHC
Ohio.
Cincinnati, Imago Earth; Groundwork Cincinnati - Mill Creek