TMACOG is a voluntary organization of dues-paying members. Members include governmental and non-governmental organizations in northwest Ohio and southeast Michigan: cities, counties, villages and townships, as well as schools and colleges, park districts, businesses and other groups concerned with quality of life in the region. Members join TMACOG to work together on common problems that cross jurisdictional borders - specifically transportation, and air and water issues.
TMACOG has no political affiliation and no partisan agenda. It is a neutral forum for all members to come together to address topics that concern the entire region.