State Chambers of Commerce are the leading voice of business in our states.

The Council of State Chambers (COSC) is the national organization for state chamber CEOs and their executive leadership. The purpose of COSC is to promote cooperation among state chambers of commerce, strengthen existing state chambers, and promote the extensions of the state chamber of commerce movement throughout the country.


Member Organizations

Click on a state to visit the state chamber's website. Click here for a full list of members. In addition to the state members listed on the map below, the following national organizations are also members of COSC: 

Association of Chamber of Commerce Executives | Council on State Taxation | U.S. Chamber of Commerce