California State Senate seat · lines in effect since 2022
California Senate District 13
A district of about 991,000 people, 31% Asian, 65% of adults with a bachelor's degree. It votes D+55.5 relative to the nation for president.
Where it sits among all 40 seats
Every California State Senate seat by partisan lean, from most Democratic to most Republican. Lean is the seat's presidential vote on current lines, relative to the nation.
Democratic
Source: 99chambers: 2024 and 2020 presidential results on current lines, relative to the nation (2024 weighted 3:1)Updated Oct 16, 2026, 5:19 AM ET
Who lives here, compared
Grey bars show the spread of all 40 seats. Small marks are other seats in California. The black marker is District 13.
Highest of 40 seats.
Lower than 69% of seats.
Lower than 92% of seats.
Lower than 85% of seats.
Higher than 90% of seats.
Less dense than 56% of seats.
Source: Census Bureau, American Community Survey 2020–2024 5-year estimates, allocated to current linesUpdated Oct 13, 2026, 5:06 AM ET
Seats most like this one
Nearest seats on demographics, density and lean.
District 1157% college gradsD+66.6Not up in 2026District 24
65% college gradsD+39.2Held DDistrict 15
35% Hispanic · 45% college gradsD+38.3Not up in 2026District 9
25% Hispanic · 46% college gradsD+41.3Not up in 2026
Source: Census Bureau, American Community Survey 2020–2024 5-year estimates, allocated to current lines; 99chambers: 2024 and 2020 presidential results on current lines, relative to the nation (2024 weighted 3:1)Updated Oct 16, 2026, 5:19 AM ET