99chambers

U.S. House seat · lines in effect since 2026

California's 30th District

A district of about 749,000 people, 24% Hispanic, 51% of adults with a bachelor's degree. It votes D+42.3 relative to the nation for president.

Laura Friedman (D) · since Jan 3, 2025Next election Nov 7, 2028The 2026 race →
CA-30

Source: 2026 results: California Secretary of State; boundaries: Census Bureau TIGER/LineUpdated Nov 7, 2026, 3:01 PM ET

Where it sits among all 435 seats

Every U.S. House seat by partisan lean, from most Democratic to most Republican. Lean is the seat's presidential vote on current lines, relative to the nation.

D+42.349th most
Democratic
Most DemocraticMost Republican218th seat · the majority line1211373443151617CA-3036442914819101832282425251465041263843194273339149273547321625451348224023520

Labels below the bar mark 51 other seats in California.

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

Every race on these lines

Results recomputed from precinct returns as if today's boundaries had always existed, so years compare like for like.

2026
U.S. HouseD+54.1

Outlined: the race for this seat itselfBlank: no race that year

Source: 99chambers results archive: precinct results allocated to current lines; 2026: California Secretary of StateUpdated Nov 7, 2026, 3:01 PM ET

Who lives here, compared

Grey bars show the spread of all 435 seats. Small marks are other seats in California. The black marker is CA-30.

Adults with a bachelor's degree51% 91st pct · 11th of 52 in CA

Higher than 91% of seats.

White adults without a degree25% 26th pct · 14th of 52 in CA

Lower than 74% of seats.

Hispanic residents24% 73rd pct · 40th of 52 in CA

Higher than 73% of seats.

Black residents4% 27th pct · 30th of 52 in CA

Lower than 73% of seats.

Asian residents13% 89th pct · 24th of 52 in CA

Higher than 89% of seats.

People per square mile1,888 78th pct · 21st of 52 in CA

Denser than 78% 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.

CA-32
25% Hispanic · 52% college gradsD+27.9Held DIL-9
56% college gradsD+38.2Held DCA-10
21% Hispanic · 52% college gradsD+35.9Held DMN-4
47% college gradsD+37.0Held D

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

Who has held it

These lines took effect in 2026.

  1. Laura Friedman (D)
    2027– · Won 2026 by 54.1

Source: Past results: 99chambers results archive (MEDSL, Klarner, state election offices)