CMAO amended the by-laws to remove the board requirement that board members also be ICMA members.
January 28, 1993
CMAO amended the by-laws by changing the budget year to run in accordance with the physical year.
January 12, 1996 The by-law were amended to establish the seven districts.
July 10, 1998 CMAO membership approved a recommendation by the Nominating Committee which would require each board member to move up a position each year.
July 19, 2002 CMAO membership amended the "Ethics" section of the Constitution.
July 15, 2011
CMAO membership amended the (January 8, 2009) by-laws to change the composition of the Board adding two at-large positions and a representative for each of the seven districts.
July 17, 2015 CMAO membership amended the Constitution to clarify membership categories and membership procedures. Also, amended Article IX - Annual Budget; Section 4 wording which specifies annual budget recommendations.