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State legislative office

California State Senator, District 34

This office represents State Senate District 34 in the California Legislature.

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Data coverage
Government
State of California
Public body
California State Senate
Electoral area
State Senate District 34
Map of California State Senate District 34
State Senate district
i
State Senate District 34 boundary from the U.S. Census Bureau TIGERweb current upper-chamber legislative-district layer.

Office overview

The office at a glance

See what this office does, the government it belongs to, the area it represents, and how voters choose its officeholder.

Government levelStateState of California
Contest typePartisanVoter-nominated office
SeatDistrict 34One of 40 State Senate seats
Regular term4 yearsEven- and odd-numbered districts are elected in alternating cycles

What this office does

Represents District 34 in the State Senate

The office votes on state laws, appropriations, and oversight while representing residents and communities within the district.

California State Senate

Election process

A top-two primary leads to the general election

California uses a top-two primary for this office. The two candidates receiving the most votes advance to the general election regardless of party. State Senate districts serve four-year terms, with even- and odd-numbered districts elected in alternating cycles.

Next electionJune 2, 2026

Open the 2026 Election Page
Detailed district statistics2020–2024 ACS 5-year estimates

Survey estimates describe the current State Senate district and are not the same as the official 2020 redistricting population count. Margins of error use the ACS 90% confidence level. Hispanic or Latino includes people of any race; the remaining race categories are non-Hispanic.

People and households

Estimated population
939,589±5,511
Median age
35.4 years±0.3 years
Households
272,130±2,403

Income and education

Median household income
$92,149±$1,422; 2024 inflation-adjusted dollars
People below the poverty line
12.2%±0.5 percentage points
Bachelor's degree or higher
24.3%±0.6 percentage points; population age 25+

Housing

Housing units
282,463±2,248
Occupied housing units
272,130±2,403
Vacant housing units
10,333±1,163
Vacancy rate
3.7%±0.4 percentage points

Race and ethnicity

Hispanic or Latino (any race)
64.7%±0.5 percentage points
White alone, not Hispanic
14.7%±0.4 percentage points
Black alone, not Hispanic
1.6%±0.2 percentage points
American Indian or Alaska Native alone, not Hispanic
0.1%±0.0 percentage points
Asian alone, not Hispanic
16.5%±0.4 percentage points
Native Hawaiian or Pacific Islander alone, not Hispanic
0.2%±0.1 percentage points
Some other race alone, not Hispanic
0.3%±0.1 percentage points
Two or more races, not Hispanic
2.0%±0.2 percentage points
U.S. Census Bureau district profile

Current officeholder

Who currently holds this office?

Current officeholder identified by the official California State Senate directory.

Official portrait of Thomas Umberg
California State Senate

Current officeholder

Thomas Umberg

California State Senator, District 34

Status
Current officeholder
Party
Democratic
First elected
Connected election
June 2, 2026

Legislative work

Committee assignments

Current official Senate directory
Standing Committees
  • Business, Professions and Economic DevelopmentMember
  • Elections and Constitutional AmendmentsMember
  • JudiciaryChair
  • Military and Veterans AffairsMember
  • Privacy, Digital Technologies, and Consumer ProtectionMember
Subcommittees
  • Transportation Subcommittee on LOSSAN Rail Corridor ResiliencyMember
Special Committees
  • Special Committee on International Sporting Events: Olympics, Paralympics and World Cup SoccerMember
Official committee list

Contact this office

Office
1021 O Street, Suite 6610, Sacramento, CA 95814-4900
Official contact page Official office source
Past officeholders1 verified succession record

Succession history

Explore prior service

Verified Senate District 34 session snapshots beginning with 2015–2016; one earlier session is included when needed to identify a predecessor.

Service ranges identify the first and last biennial sessions in the California State Library dataset; they do not assert exact swearing-in or departure dates. District numbers continue across redistricting, so earlier records may describe materially different boundaries.

Electoral area

Where this office represents

See the geographic area represented by this office and open its location information when available.

Interactive area map

Explore places and districts connected to State Senate District 34

State Senate District 34 includes parts of Los Angeles and Orange counties. Communities represented across the district include Santa Ana, Anaheim, La Habra, South Whittier, Fullerton, Orange, East Whittier, and Buena Park.

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Places and districts shownLoading related pages

Past elections

Election history

This section covers completed elections. Current and upcoming contests remain on the Election Page linked from the top of this Office Page. A published past Election Page contains the full candidate list, certified result, campaign-finance coverage, methodology, and source documents.

State legislative officeCertified

California State Senate District 34

June 2, 2026 Statewide Direct Primary Election · 2 candidates
Money in
$0.00
Money out
$0.00
Open Election Page

Election and finance details summarize the connected record. Missing or unpublished filings do not mean zero activity.

Public records

Records connected to this office

Open the official records used to follow the work, decisions, or disclosures connected to this office.

Legislative activity

Authored legislation

Review Senate bills authored by the officeholder during each legislative session. Coauthored bills, resolutions, and constitutional amendments are not included in this list.

Thomas J. Umberg is listed as the author of each senate bill below. Statuses were reviewed August 17, 2026. Showing all 36 bills.

SB 25 Antitrust: premerger notificationAuthored by Thomas J. Umberg Chaptered SB 26 Civil actions: restitution for or replacement of a new motor vehicleAuthored by Thomas J. Umberg Chaptered SB 27 Community Assistance, Recovery, and Empowerment (CARE) Court ProgramAuthored by Thomas J. Umberg Chaptered SB 28 Community Assistance, Recovery, and Empowerment (CARE) court programAuthored by Thomas J. Umberg Assembly · Appropriations SB 35 Alcohol and drug programsAuthored by Thomas J. Umberg Assembly · Appropriations SB 36 Price gouging: state of emergencyAuthored by Thomas J. Umberg Vetoed SB 37 Attorneys: unlawful solicitations and advertisementsAuthored by Thomas J. Umberg Chaptered SB 38 Second Chance ProgramAuthored by Thomas J. Umberg Senate · Died · Appropriations SB 42 Political Reform Act of 1974: public campaign financing: California Fair Elections Act of 2026Authored by Thomas J. Umberg Chaptered SB 43 Substance use disorder: addiction treatment referral agenciesAuthored by Thomas J. Umberg Senate · Died · Appropriations SB 44 Brain-computer interfaces: neural dataAuthored by Thomas J. Umberg Senate · Died · Appropriations SB 46 Presidential elections: qualifications for officeAuthored by Thomas J. Umberg Assembly · Appropriations SB 47 February 2025 bar exam: auditAuthored by Thomas J. Umberg Chaptered SB 54 Court fee waivers: veteransAuthored by Thomas J. Umberg Chaptered SB 55 State parks: facilities pass: Gold Star Family membersAuthored by Thomas J. Umberg Assembly · Appropriations SB 66 Civil discoveryAuthored by Thomas J. Umberg Chaptered SB 82 Contracts: consumer goods and services: dispute resolution provisionsAuthored by Thomas J. Umberg Chaptered SB 83 State Department of Health Care Services: substance abuse treatment: disclosuresAuthored by Thomas J. Umberg Chaptered SB 85 Civil actions: service of summonsAuthored by Thomas J. Umberg Chaptered SB 95 Sellers of travel: travel consolidators: fraudAuthored by Thomas J. Umberg Senate · Died · Appropriations SB 96 Streaming services: commercial advertisementsAuthored by Thomas J. Umberg Senate · Unfinished Business SB 249 County boards of education: elections: consolidationAuthored by Thomas J. Umberg Assembly · Appropriations SB 253 State Bar of CaliforniaAuthored by Thomas J. Umberg Chaptered SB 312 Dog importation: health certificatesAuthored by Thomas J. Umberg Chaptered SB 342 Contractors: unlicensed workAuthored by Thomas J. Umberg Assembly · Third Reading SB 398 Election crimes: payment based on voting or voter registrationAuthored by Thomas J. Umberg Chaptered SB 447 Workers’ compensation: death benefitsAuthored by Thomas J. Umberg Chaptered SB 448 Trespassing: removal of trespassers on residential propertyAuthored by Thomas J. Umberg Senate · Died · Appropriations SB 490 Alcohol and drug programsAuthored by Thomas J. Umberg Assembly · Third Reading SB 574 Attorneys, arbitrators, judicial officers, and alternative resolution providersAuthored by Thomas J. Umberg Assembly · Third Reading SB 576 Video streaming services: commercial advertisementsAuthored by Thomas J. Umberg Chaptered SB 623 Automobile accidents: civil actions: transportation network companiesAuthored by Thomas J. Umberg Chaptered SB 645 Juries: peremptory challengesAuthored by Thomas J. Umberg Chaptered SB 758 Public health: nitrous oxideAuthored by Thomas J. Umberg Assembly · Third Reading SB 883 Reactive chemicals: facilities: methyl methacrylateAuthored by Thomas J. Umberg Assembly · Third Reading SB 884 Elections in 2026 through 2029Authored by Thomas J. Umberg Assembly · Third Reading
Open the complete official session search

Official directory

California State Senate directory record for District 34

Verify the office, current Senator, committee assignments, public contact information, and district assignment.

Open official record

News and Press Releases

Updates from this office

Read press releases, official updates, and coverage selected by this office. Follow each link to its source.

Office of Senator Thomas Umberg logo
Office of Senator Thomas Umberg
Office of Senator Thomas Umberg
Press release

Senator Umberg Statement on Audit of February 2025 Bar Exam

SACRAMENTO, Calif. — Today, Senator Thomas J. Umberg (D — Santa Ana), Chair of the Senate Judiciary Committee, released the following statement regarding the California State Auditor's release of its audit of the February 2025 California Bar Exam:

Official sourceRead official update
Office of Senator Thomas Umberg logo
Office of Senator Thomas Umberg
Office of Senator Thomas Umberg
Press release

Governor Newsom Signs SB 623 (Umberg) to Protect Accident Victims and Strengthen Rideshare Safety

SACRAMENTO, Calif. — Today, Senator Thomas J. Umberg (D-Santa Ana), Chair of the Senate Judiciary Committee, announced Governor Gavin Newsom signed Senate Bill 623 the Fair Medical Billing & Rideshare Safety Act, legislation that protects accident victims from unnecessary treatment and excessive medical charges while…

Official sourceRead official update

Sources

Sources and data coverage

Review the public records used on this page, what Paper Trail Politics has captured, and what remains incomplete.

Current assessmentComplete coverage

The office identity, electoral area, connected 2026 election, and available official sources are included.

Assessed August 17, 2026 · Current 2026 records

Visual and interaction QA has not yet been completed for this generated page.

Sources used on this page8 source organizations · 16 records
California Secretary of State

2 records from this source are used on the page.

California State Senate District 34 district totalshttps://elections.cdn.sos.ca.gov/sov/2026-primary/sov/90-state-senator.xlsxOfficial election event and result source for November 6, 2018 General Election.https://www.sos.ca.gov/elections/prior-elections/statewide-election-results/general-election-november-6-2018
U.S. Census Bureau TIGERweb

1 record from this source is used on the page.

Boundary source for California State Senate District 34https://tigerweb.geo.census.gov/arcgis/rest/services/TIGERweb/Legislative/MapServer/1
California State Senate

5 records from this source are used on the page.

Official government information about the office and public bodyhttps://www.senate.ca.gov/senatorsCurrent officeholder identified by the official California State Senate directory.https://lcmspubcontact.lc.ca.gov/PublicLCMS/ContactPopup.php?district=SD34&inframe=NPortrait source page for Thomas Umberghttps://www.senate.ca.gov/sites/senate.ca.gov/files/styles/large/public/media/UMBERG%252C%2520TOM%2520%2528D-34%2529_6.jpg?itok=4FDVG6vRCommittee assignments for Thomas Umberg (Current official Senate directory)https://www.senate.ca.gov/senators/34Reviewed source for when Thomas Umberg's current uninterrupted Senate service began.https://www.senate.ca.gov/system/files/2024-12/2466_joint-handbook_2023-24_complete.pdf
California Legislative Information

2 records from this source are used on the page.

Complete authored senate bills search for 2025–2026 Sessionhttps://leginfo.legislature.ca.gov/faces/billSearchClient.xhtml?session_year=20252026&house=Senate&author=Umberg&lawCode=AllComplete authored senate bills search for 2023–2024 Sessionhttps://leginfo.legislature.ca.gov/faces/billSearchClient.xhtml?session_year=20232024&house=Senate&author=Umberg&lawCode=All
U.S. Census Bureau district profile

1 record from this source is used on the page.

2020–2024 ACS 5-year estimates detailed district statisticshttps://data.census.gov/profile?g=610XX00US06034
Census Reporter

1 record from this source is used on the page.

Access copy of the 2020–2024 ACS 5-year estimates Census tables used for district statisticshttps://censusreporter.org/profiles/61000US06034/
California State Library · Demographics in the California Legislature

1 record from this source is used on the page.

Verified succession chronology for California State Senator, District 34https://lab.data.ca.gov/dataset/demographics-in-the-california-legislature/9dc0c75b-5a89-483f-9590-ec41bfe26882
Office of Senator Thomas Umberg

3 records from this source are used on the page.

Press release: Senator Umberg Statement on Audit of February 2025 Bar Examhttps://sd34.senate.ca.gov/news/senator-umberg-statement-audit-february-2025-bar-examPublished image: Senator Umberg Statement on Audit of February 2025 Bar Examhttps://sd34.senate.ca.gov/sites/sd34.senate.ca.gov/files/sd34_umberg_logo_white_padding.pngPress release: Governor Newsom Signs SB 623 (Umberg) to Protect Accident Victims and Strengthen Rideshare Safetyhttps://sd34.senate.ca.gov/news/governor-newsom-signs-sb-623-umberg-protect-accident-victims-and-strengthen-rideshare-safety
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