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 an 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.

Find Your Senator - Address Lookup

State and Regional maps

Maps and reports are in PDF format.

2011 Districts

• 2011 Certified Senate Districts - Color
• San Francisco Bay Area
• Inland Empire
• Los Angeles
• San Diego

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
• 2023-2024 Senate Accelerated Area - 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

Senate District 1

• SD 1
• SD 1 - Folsom zoom
• SD 1 - Assigned Deferred Area
• SD 1 - Assigned Deferred Area Zoom
• SD 1 - Accelerated Area Zoom

Senate District 2

• SD 2
• SD 2 - Assigned Deferred Area
• SD 2 - Assigned Deferred and Accelerated Area Zoom

Senate District 3

• 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

Senate District 4

• SD 4
• SD 4 - Accelerated Area
• SD 4 - Accelerated Area Modesto Zoom
• SD 4 - Accelerated Area Placer/Nevada Zoom

Senate District 5

• SD 5
• SD 5 - Modesto zoom
• SD 5 - Accelerated Area
• SD 5 - Accelerated Area Zoom

Senate District 6

• SD 6
• SD 6 - Assigned Deferred Area
• SD 6 - Assigned Deferred Area Zoom
• SD 6 - Accelerated Area Zoom

Senate District 7

• SD 7
• SD 7 - Concord zoom
• SD 7 - Assigned Deferred Area
• SD 7 - Assigned Deferred Area Zoom

Senate District 8

• SD 8
• SD 8 - Accelerated Area Zoom

Senate District 9

• SD 9
• SD 9 - Assigned Deferred Area
• SD 9 - Assigned Deferred Area Zoom

Senate District 10

• SD 10
• SD 10 - Assigned Deferred Area
• SD 10 - Assigned Deferred Area Zoom

Senate District 11

• SD 11
• SD 11 - San Mateo County zoom
• SD 11 - Accelerated Area Zoom

Senate District 12

• SD 12
• SD 12 - Assigned Deferred Area
• SD 12 - Assigned Deferred Area Zoom

Senate District 13

• SD 13
• SD 13 - South San Francisco zoom
• SD 13 - Accelerated Area
• SD 13 - Accelerated Area Zoom

Senate District 14

• SD 14
• SD 14 - Assigned Deferred Area
• SD 14 - Assigned Deferred Area Zoom

Senate District 15

• SD 15
• SD 15 - San Jose zoom
• SD 15 - Accelerated Area 
• SD 15 - Accelerated Area Zoom

Senate District 16

• SD 16

Senate District 17

• SD 17
• SD 17 - San Jose zoom

Senate District 18

• SD 18
• SD 18 - Assigned Deferred Area
• SD 18 - Assigned Deferred Area - Riverside
• SD 18 - Assigned Deferred Area - San Diego

Senate District 19

• SD 19

Senate District 20

• SD 20
• SD 20 - Assigned Deferred Area
• SD 20 - Assigned Deferred Area Zoom

Senate District 21

• SD 21
• SD 21 - Assigned Deferred Area
• SD 21 - Assigned Deferred Area Zoom

Senate District 22

• SD 22
• SD 22 - Assigned Deferred Area
• SD 22 - Assigned Deferred Area Zoom

Senate District 23

• SD 23
• SD 23 - Assigned Deferred Area
• SD 23 - Assigned Deferred Area Zoom
• SD 23 - Accelerated Area Zoom

Senate District 24

• SD 24
• SD 24 - Assigned Deferred Area
• SD 24 - Assigned Deferred Area Zoom

Senate District 25

• SD 25
• SD 25 - Los Angeles zoom
• SD 25 - Assigned Deferred Area
• SD 25 - Assigned Deferred Area Zoom

Senate District 26

• SD 26
• SD 26 - Assigned Deferred Area
• SD 26 - Assigned Deferred Area Zoom

Senate District 27

• 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

Senate District 28

• SD 28
• SD 28 - Accelerated Area

Senate District 29

• 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

Senate District 30

• SD 30
• SD 30 - Assigned Deferred Area
• SD 30 - Assigned Deferred Area Zoom

Senate District 31

• SD 31
• SD 31 - Assigned Deferred Area
• SD 31 - Assigned Deferred Area Zoom

Senate District 32

• SD 32
• SD 32 - Assigned Deferred Area
• SD 32 - Assigned Deferred Area Zoom

Senate District 33

• SD 33
• SD 33 - Assigned Deferred Area
• SD 33 - Assigned Deferred Area Zoom

Senate District 34

• SD 34
• SD 34 - Assigned Deferred Area
• SD 34 - Assigned Deferred Area Zoom

Senate District 35

• SD 35
• SD 35 - Assigned Deferred Area
• SD 35 - Assigned Deferred Area Zoom

Senate District 36

• SD 36
• SD 36 - Accelerated Area

Senate District 37

• 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

Senate District 38

• SD 38
• SD 38 - Assigned Deferred Area
• SD 38 - Assigned Deferred Area Zoom

Senate District 39

• SD 39
• SD 39 - Central San Diego zoom
• SD 39 - Assigned Deferred Area
• SD 39 - Assigned Deferred Area Zoom

Senate District 40

• SD 40
• SD 40 - Assigned Deferred Area
• SD 40 - Assigned Deferred Area Zoom