County of San Diego Redistricting

Client: County of San Diego

Location: San Diego County, California

The County of San Diego is the second-largest county in California and the fifth-largest county in the United States. It is home to an extremely diverse population of more than 3.3 million. In 2020, for the first time in its history, the county used an Independent Redistricting Commission (IRC) to draw the new Board of Supervisor boundaries. The IRC comprised 14 citizen members from diverse geographical, political, racial and ethnic, and personal backgrounds, who undertook the task of redrawing the county’s five supervisorial districts in an impartial way that complied with law and reinforced public confidence in the integrity of the redistricting process.

FLO was selected as the IRC’s demographic service provider. During the process, FLO developed 19 iterations of the County of San Diego Board of Supervisor boundary maps. Each map accounted for legal requirements, community feedback, other administrative boundaries (e.g., school districts, water districts), and specific instructions from the IRC. The maps were frequently created under very tight timelines. The final map was adopted by the IRC on December 11, 2021.