Redistricting occurs in the County of Los Angeles every 10 years, following the federal census, to redraw the boundaries of the County's five supervisorial districts to reflect new and shifting populations. In prior redistricting cycles, the Board of Supervisors was responsible for redrawing the County's district boundary lines, with the assistance of an advisory Boundary Review Committee. In 2016, the State Legislature approved Senate Bill 958 amending the Elections Code to require an independent 14-member Citizens Redistricting Commission to adjust the boundary lines of the supervisorial districts in the year following the decennial census. This redistricting cycle will be the first time the County's supervisorial district boundaries will be redrawn by the independent Citizens Redistricting Commission.

On the evening of December 15, 2021 Preliminary Supervisorial Districts were finalized and posted by the Los Angeles County Citizen Redistricting Commission (CRC).

Adopted 12/15/21

UPDATE HISTORY:

• 1/15/15 - to match the layer on eGIS SDE database (with the exception of the LB / San Pedro ports). Original layer DRP had was less accurate as far as lining up with city boundaries - this was exported to 'GEODATABASES/admin_dist' database on 1/14/15.

• 12/1/16 - Updated with newly elected Supervisors for 4th (Janice Hahn) and 5th (Kathryn Barger) Supervisorial Districts per election on 11/8/16.

• 1/6/21 - Updated with newly elected Supervisor for 2nd (Holly Mitchell) Supervisorial District per election on 11/3/20.

• 12/20/21 - Added the preliminary linework that reflects the newly adopted district boundaries that occurred on 12/15/21. Archived previous version with a "_2011" suffix.

• 05/04/22 - Updated the official lineword from RR/CC to reflect the newly adopted district boundaries that occurred on 12/15/21.

• 1/26/22 - Updated to a simplified version using a 5ft tolerance on critical points.