For southeast Michigan:
Southeast Michigan Woodworkers, http://www.semiww.org
Michigan Woodworkers Guild, http://www.michiganwoodworkersguild.org/
Michigan Association of Woodturners, http://michiganwoodturner.org/
Detroit Area Woodturners, http://www.detroitareawoodturners.org/
Metro Carvers Club of Michigan, http://www.geocities.com/metrocarvers/
Mid-Michigan Woodworkers Guild, meet in Dewitt Michigan http://www.mmwg.org
There are more clubs in other parts of the state, and there may even be more clubs in Southeast Michigan, but this will get you started.