On September 27, 2011 the Colusa County Board of Supervisors adopted the ordinance establishing the new supervisorial district boundaries as presented by the redistricting committee for consideration on September 13, 2011. The new supervisorial district boundaries became effective on October 27, 2011.
The new supervisorial district boundaries were derived from numerous proposals developed by the redistricting committee at the direction of the Board of Supervisors. All proposal maps can be viewed or downloaded from the county website. Questions or concerns: call the County Clerk's Office at 530-458-0500 or email us. The 2010 Supervisorial District Maps, Ordinance and the 2000 Supervisorial District Maps are listed below for review or download.