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County Administrator's Office

2021 Redistricting
County Of Sonoma › Administrative Support & Fiscal Services › County Administrator's Office › Policy Grants and Special Projects › Projects › 2021 Redistricting › Draft Maps
2021 Redistricting

Draft Maps - 2021 Redistricting

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The draft maps represent themes from public testimony. The process of arriving at final maps is iterative.

  • The Advisory Redistricting Commission (ARC) will consider public input, make adjustments and narrow down the maps during their October 22 and 25 meetings.
  • The ARC’s recommended maps will then go to the Board of Supervisors for initial consideration on November 2, followed by an additional public hearing on November 16, 2021.
  • December 7: final adjustments to map
  • December 14: adopt ordinance 

Background

The Federal Voting Rights Act of 1965 and the California Elections Code Section 21500 mandate that the Board of Supervisors adjust supervisorial district boundaries within the County to reflect the new census data and to keep supervisorial districts substantially equal in population. In addition to those mandates, Elections Code Section 21500(c) requires the supervisorial district boundaries to use the following criteria as set forth in order of priority: 

  1. To the extent practicable, supervisorial districts shall be geographically contiguous.
  2. To the extent practicable, the geographic integrity of any local neighborhood or local community of interest shall be respected in a manner that minimizes division.
  3. To the extent practicable, the geographic integrity of a city or census designated place shall be respected in a manner that minimizes its division.
  4. To the extent practicable, supervisorial districts shall be drawn to encourage geographical compactness in a manner that nearby areas of population are not bypassed in favor of more distant populations.

Revised Supervisorial District Boundaries Map

Use the Interactive Review Map to take a closer look at some of the draft maps. To see this map, select the map title in the “Layers” menu.

  1. Revised Sonoma County Supervisorial District Boundaries Map
    (PDF:  1.1 MB)
  2. Revised District Map Census Block Assignments (PDF: 702 kB)

See the Interactive Review Map

Map for review on December 7, 2021

Use Interactive Review Map to take a closer look at some of the draft map. Click on the map identifier (e.g., 51162 NDC B)  in the “Layers” menu.

  1. Proposed-Revised-Sonoma-County-Supervisorial-District-Boundaries - RP Split 3 (PDF:  892 kB)
    1. Proposed-Revised-Sonoma-County-Supervisorial-District-Boundaries Incorporated/Unincorporated Data RP Split 3 (PDF: 133 kB)

Maps reviewed on November 29, 2021

Use Interactive Review Map to take a closer look at some of the draft maps. Click on the map identifier (e.g., 51162 NDC B)  in the “Layers” menu.

  1. RP Split 2 (PDF:  1.67 MB)
  2. RP Split 1 (PDF:  831 kB)
    1. Incorporated/Unincorporated Data RP Split 1  (PDF:  90 kB)
  3. ARC Rev 1 (PDF:  900 kB)
    1. Incorporated/Unincorporated Data ARC Rev 1 (PDF:  79 kB)
  4. d84750 Cleanup (PDF:  810 kB)
    1. Incorporated/Unincorporated Data d84750 Cleanup (PDF:  111 kB)

Maps reviewed on November 16, 2021

Use  Interactive Review Map to take a closer look at some of the draft maps. Click on the map identifier (e.g., 51162 NDC B)  in the “Layers” menu

  1. Current Map
    1. Unincorporated/Incorporated Data
  2. 51162 NDC D
    1. Unincorporated/Incorporated Data
  3. NDC Draft E
  4. NDC Draft F
  5. NDC Draft G

Other maps referenced during the 11/16 public hearing:

https://districtr.org/edit/73407

Rohnert Park public input map 73407

https://districtr.org/plan/73519

Rohnert Park public input map 73519

https://districtr.org/plan/81153

E. Koenigshofer public input map 81153

https://districtr.org/plan/81749

E. Koenigshofer public input map 81749

Maps reviewed on October 25, 2021

Use Interactive Review Map to take a closer look at some of the draft maps. Click on the map identifier (e.g., 51162 NDC B)  in the “Layers” menu.

  1. 51162 NDC B (PDF:  435 kB)
  2. 51162 NDC C (PDF:  435 kB)
  3. 51162 NDC D (PDF:  402 kB)
    Map 51162 NDC-D will be presented to the Board of Supervisors at the redistricting public hearing on 11/2/2021.

Maps reviewed on October 22, 2021

Use Interactive Review Map to take a closer look at some of the draft maps. Click on the map identifier (e.g., NDC 201)  in the “Layers” menu.

  1. NDC 201b (PDF: 321 kB)
  2. NDC 203b (PDF: 124 kB)

Maps reviewed on October 18, 2021

Use Interactive Review Map to take a closer look at some of the draft maps. Click on the map identifier (e.g., NDC 201)  in the “Layers” menu.

  1. Pages 1-2: NDC 201 (PDF: 280 kB)
  2. Pages 3-4: NDC 202 (PDF: 286 kB)
  3. Pages 5-6: NDC 203 (PDF: 282 kB)
  4. Pages 7-8: Public 101 (PDF: 283 kB)
  5. Pages 9-10: Public 102 (PDF: 285 kB)
  6. Pages 11-12: Public 103 (PDF: 281 kB)
  7. Pages 13-14: Public 104 (PDF: 279 kB)
  8. Pages 15-16: Public 105 (PDF: 277 kB)
  9. Page 17: DistrictR #39529 (PDF: 85 kB)
  10. Page 18: DistrictR #64670 (PDF: 104 kB)
  11. Page 19: DistrictR #49253 (PDF: 114 kB)
  12. Page 20: DistrictR #64514 (PDF: 102 kB)
  13. Page 21: DistrictR #65954 (PDF: 100 kB)
  14. Page 22: DistrictR #61430 (PDF: 101 kB)
  15. Page 23: DistrictR #52142 (PDF: 96 kB)
  16. Page 24: DistrictR #64920 (PDF: 102 kB)
  17. Page 25: DistrictR #64801 (PDF: 104 kB)
  18. Page 26: DistrictR #64572 (PDF: 148 kB)
  19. Page 27: DistrictR #64474 (PDF: 148 kB)
  20. Page 28: DistrictR #64817 (PDF: 156 kB)
  21. Page 29: DistrictR #52082 (PDF: 102 kB)
  22. Page 30: DistrictR #51958 (PDF: 96 kB)
  23. Page 31: DistrictR #51944 (PDF: 97 kB)
  24. Page 32: DistrictR #51302 (PDF: 100 kB)
  25. Page 33: DistrictR #51162 (PDF: 105 kB)
  26. Page 34: DistrictR #64676 (PDF: 145 kB)
  27. Page 35: DistrictR #62046 (PDF: 155 kB)
  28. Page 36: DistrictR #59025 (PDF: 105 kB)
  29. Page 37: DistrictR #61910 (PDF: 119 kB)
  30. Page 38: DistrictR #33931 (PDF: 111 kB)
  31. Page 39: DistrictR #51854 (PDF: 103 kB)
  32. Page 40: DistrictR #63366 (PDF: 164 kB)
  33. Page 41: DistrictR #60407 (PDF: 109 kB)
  34. Complete packet (PDF: 4.2 MB)