Senate districts established by the California Citizens Redistricting Commission (CRC) in 2011 and 2021.
Even numbered Senate districts changed with the 2022 election cycle into the 2021 Certified Senate districts.
Odd numbered Senate districts will change to the 2021 Certified districts with the 2024 election cycle. Until then the odd numbered 2011 Certified Senate districts are still active.
Accelerated Areas occur where an existing odd-district is overlain by a new even-district. The constituents in the accelerated areas will have two Senators who may represent them.
Deferred Areas occur when an area that was an even-numbered district in the 2011 redistricting plan becomes and odd-numbered district in the 2021 redistricting plan. The area does not have a Senator until the conclusion of the 2024 election when the new odd-numbered district becomes active. During the 2023-2024 session the Senate Rules Committee assigns Senators to provide constituent services in deferred areas.
Maps and reports are in PDF format.
State and Regional maps
2011 Districts
2021 Districts
- 2021 Certified Senate Districts
- 2021 Certified Assembly Districts
- 2021 Certified Congressional Districts
- Map of Senate districts changing with 2022 election
- Map of Senate districts changing with 2024 election
2023-2024 Session
- 2023-2024 Senate Map with Accelerated and Deferred Areas
- 2023-2024 Senate Deferred Area Member Assignments - Census Place Listing
Senate District: 1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40
- SD 1
- SD 1 - Folsom zoom
- SD 1 - Assigned Deferred Area
- SD 1 - Assigned Deferred Area Zoom
- SD 1 - Accelerated Area Zoom
- SD 3
- SD 3 - Contra Costa County zoom
- SD 3 - Sonoma zoom
- SD 3 - Assigned Deferred Area
- SD 3 - Assigned Deferred Area Zoom
- SD 3 - Accelerated Area Zoom
- SD 4
- SD 4 - Accelerated Area
- SD 4 - Accelerated Area Modesto Zoom
- SD 4 - Accelerated Area Placer/Nevada Zoom
- SD 18
- SD 18 - Assigned Deferred Area
- SD 18 - Assigned Deferred Area - Riverside
- SD 18 - Assigned Deferred Area - San Diego
- SD 23
- SD 23 - Assigned Deferred Area
- SD 23 - Assigned Deferred Area Zoom
- SD 23 - Accelerated Area Zoom
- SD 27
- SD 27 - Los Angeles zoom
- SD 27 - Accelerated Area
- SD 27 - Accelerated Area with SD 20 - Zoom
- SD 27 - Accelerated Area with SD 24 - Zoom
- SD 29
- SD 29 - Accelerated Area
- SD 29 - Accelerated Area with SD 22 - Zoom
- SD 29 - Accelerated Area with SD 30 - Zoom
- SD 29 - Accelerated Area with SD 32 - Zoom
- SD 29 - Accelerated Area with SD 34 - Zoom
- SD 29 - Accelerated Area with SD 36 - Zoom
- SD 37
- SD 37 - Accelerated Area
- SD 37 - Accelerated Area with SD 32, SD 34, SD 38 - Zoom
- SD 37 - Accelerated Area with SD 36 - Zoom
- SD 39
- SD 39 - Central San Diego zoom
- SD 39 - Assigned Deferred Area
- SD 39 - Assigned Deferred Area Zoom