The Eastern, Western, Southern and Midwest Chapters (Chapters) were formerly trade associations affiliated with the National Auto Auction Association, Inc. (NAAA) as Zone Associations (Zone) and separate corporations. On March 3, 2010 the membership of each Zone voted to dissolve the corporations and carrying on the functions of the former Zone Association as a Chapter of NAAA pursuant to the Articles of Incorporation and Bylaws of NAAA.  The Zone Bylaws were replaced with Governance Procedures intended to maintain the same rights these Chapters formerly had as Zone Associations, and, they follow closely the former bylaws of each Zone Association.

A regular member or associate member of NAAA shall be a regular member or associate member of a Chapter, provided that applications are made to NAAA and must be approved by the NAAA Board of Directors. However, all applications for membership will be posted and Members shall be given 30 days to comment on any application prior to approval by the Board. The Chapter President shall be notified in advance by NAAA prior to the posting of any new member application. Upon acceptance, a regular member shall be assigned by NAAA to a Chapter if its principal place of business is within the following geographic boundaries.