tuolumne redistricting process

Every ten years, local governments use new census data to redraw their district lines to reflect how local populations have changed. Assembly Bill 849 (2019) requires cities and counties to engage communities in the redistricting process by holding public hearings and/or workshops and doing public outreach, including to non- English-speaking communities.

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 Tuolumne County, the Board of Supervisors is responsible for drawing supervisorial districts. Redistricting is done using U.S. Census data, which will be  released around September 30, 2021. For the County of Tuolumne, the redistricting process must be completed by December 21, 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 County 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.

You can contact the County Clerk at 209 533 5570 or redistricting@tuolumnecounty.ca.gov to find out more about how the process works.

What do the existing supervisorial districts look like?

You can find an interactive web map of the County’s current supervisorial districts HERE.

You can download a PDF version of the County's current supervisorial districts HERE

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: (1) geographically   contiguous districts (each supervisorial district should share a common border with the next), (2) the  geographic integrity of local neighborhoods or communities shall be respected in a manner that minimizes its division, (3) geographic integrity of a city shall be respected in a manner that minimizes its division, (4) easily identifiable boundaries that follow natural or artificial barriers (rivers, streets, highways, rail lines, etc.), and (5) 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.

How will our County notify the public about redistricting?

The County will reach out to local media to publicize the redistricting process. Also, we will make a good faith effort to notify community groups of various kinds about the redistricting process. Our public hearings will be provided in applicable languages if residents submit a request in advance. The County will notify the public about redistricting hearings, post maps online before adoption, and created a dedicated web page www.tuolumnecounty.ca.gov/redistricting for all relevant information about the redistricting process.

How can I get involved?

The Board of Supervisors will be holding five (5) hearings to receive public input on where district lines should be drawn. Those hearings will be in the board chambers at 2 South Green Street Sonora, Ca 95370

Held on:


DATE: Tuesday, November 9, 2021

TIME: 1:30 PM


DATE: Monday, November 15, 2021

TIME: 6:00 PM


DATE: Tuesday, December 7, 2021

TIME: 1:30 PM


DATE: Tuesday, December 14, 2021

TIME: 1:30 PM

You can also submit public comments, including suggested draft maps, by emailing: redistricting@tuolumnecounty.ca.gov

How to submit a map

The county has provided a map tool called DistrictR for individuals to create and submit proposed supervisor district maps or define “Communities of Interest”. A Community of Interest is a neighborhood, community, or group of people who have common policy concerns and would benefit from being maintained in a single district. For example a Community of Interest could be an HOA, subdivision, or just a neighborhood that shares common culture, interests and challenges.

All maps submitted to the DistrictR gallery will be downloaded and maintained as public record and will be used to help draw district boundaries.

Use this link to access DistrictR.

Detailed instructions for using DistrictR can be found here:

California DistrictR Instructions [ENGLISH]

California DistrictR Instructions [SPANISH]

Where can I find out more?