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Supervisorial Redistricting 2021

What is Redistricting?

Every ten years, districts must be redrawn so that each district is substantially equal in population. This process, called redistricting, is important in ensuring that each board member represents about the same number of constituents. In Butte County, the Board of Supervisors is responsible for adopting supervisorial districts. Redistricting will be based on data from the U.S. Census, expected to be released by the end of September. For the County, the redistricting process must be completed by December 15, 2021. 

Why Does Redistricting Matter to Me? 

Redistricting determines which neighborhoods and communities are grouped together into a district for purposes of electing a board member. The Board of Supervisors will seek input in selecting the next district map for our supervisorial districts. You have an opportunity to share with the Board of Supervisors how you think district boundaries should be drawn to best represent your community. 

What is a Community of Interest or COI?

A community of interest is any cohesive group of people that live in a geographically definable area and should be considered as a potential voting bloc in current of future elections. 

There are some communities of interest that are considered “protected classes” in that they have rights through state or federal civil rights or voting rights laws. Some examples of protected classes in districting would be ethnic and racial minorities like a concentration of Latino, Asian or African Americans within a congressional district. Protected classes can be described through public input and there are federal databases that must be used wherever applicable to define these areas and make sure that they are not being harmed by the district boundaries.

There are other COI that can also be considered in districting, but don’t have the higher legal requirements as ethnic or racial minorities, but still are critical to the process. These could be clusters of senior citizens in one community or a group of college students living in a densely populated area near a campus, or people who live in a downtown area or hillside, agricultural, urban or even people who share concerns such as transportation, airport noise, dog parks etc.

How to Document Your COI

What is the nature of the bond or common interest of your community? You can describe what the common interests of your community are and why or how they are important. 

Where is your community located? You can define it by drawing it on a map or describing it by natural or street/city/school board or other political boundaries.

What is the rationale for your community of interest to be used in this districting? You can describe how the community interacts with the agency being districted and how the issues before the board have a unique impact on that community.

Submit information, comments, and/or maps of your Community of Interest here or use the Districtr Map Drawing Tool

What District Are You In? 

Enter your address into the Butte County Supervisorial District Map to learn what District you live in. 

What do the Existing Supervisorial Districts Look Like? 

View Butte County Supervisorial District Map Adopted July 2011

What are the Current District Populations?

2020 Census-District Populations

What Criteria will our Board of Supervisors Use When Drawing District Lines? 

To the extent practicable, district lines will be adopted using the following criteria:

  • Geographically contiguous districts (each supervisorial district should share a common border with the next)
  • The geographic integrity of local neighborhoods or communities shall be respected in a manner that minimizes its division. 
  • Geographic integrity of a city shall be respected in a manner that minimizes its division
  • Easily identifiable boundaries that follow natural of artificial barriers (rivers, streets, highways, rail lines, etc.), and 
  • Lines shall be drawn to encourage geographic compactness

In addition, boundaries shall not be drawn for purposes of favoring or discriminating against a political party. 


The Butte County Board of Supervisors discussed redistricting maps at the Board Meeting on December 14, and ultimately approved Redistricting Map A5-C with a 3-2 vote. Thank you to those who submitted maps and public comments throughout this process. With Board approval of Map A5-C, public comments have been closed. 


Residents are encouraged to participate in the redistricting process by developing and submitting their own redrawn district plans for consideration by the board using the online DistrictR map drawing tool.

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