State legislative office

California State Assembly Member, District 18

This office represents Assembly District 18 in the California Legislature.

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Data coverage

Government: State of California
Public body: California State Assembly
Electoral area: Assembly District 18

State Assembly district

Assembly District 18 boundary from the U.S. Census Bureau TIGERweb current 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 18One of 80 State Assembly seats

Regular term2 yearsAssembly seats are elected every two years

What this office does

Represents District 18 in the State Assembly

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

California State Assembly Chief Clerk

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.

Next electionJune 2, 2026

Open the 2026 Election Page

Detailed district statistics2020–2024 ACS 5-year estimates

Survey estimates describe the current Assembly 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: 480,300±1,968
Median age: 37.6 years±0.3 years
Households: 192,459±1,664

Income and education

Median household income: $100,676±$1,880; 2024 inflation-adjusted dollars
People below the poverty line: 13.3%±0.6 percentage points
Bachelor's degree or higher: 47.8%±0.9 percentage points; population age 25+

Housing

Housing units: 209,175±1,594
Occupied housing units: 192,459±1,664
Vacant housing units: 16,716±992
Vacancy rate: 8.0%±0.5 percentage points

Race and ethnicity

Hispanic or Latino (any race): 28.0%±0.6 percentage points
White alone, not Hispanic: 26.5%±0.6 percentage points
Black alone, not Hispanic: 18.8%±0.6 percentage points
American Indian or Alaska Native alone, not Hispanic: 0.2%±0.1 percentage points
Asian alone, not Hispanic: 18.4%±0.4 percentage points
Native Hawaiian or Pacific Islander alone, not Hispanic: 0.5%±0.1 percentage points
Some other race alone, not Hispanic: 1.0%±0.2 percentage points
Two or more races, not Hispanic: 6.4%±0.4 percentage points

U.S. Census Bureau district profile

Current officeholder

Who currently holds this office?

Current officeholder identified by the official California State Assembly directory.

California State Assembly

Current officeholder

Mia Bonta

California State Assembly Member, District 18

Status: Current officeholder
Party: Democrat
Connected election: June 2, 2026

Legislative work

Committee assignments

2025–2026 legislative session

Standing Committees

BudgetMember
Communications and ConveyanceMember
EducationMember
HealthChair

Subcommittee Committees

Subcommittee No. 1 on HealthMember

Select Committees

Select Committee on Alternative Protein InnovationMember
Select Committee on CalFresh Enrollment and NutritionCo-Chair
Select Committee on Community ReinvestmentMember
Select Committee on Latina InequitiesMember
Select Committee on Ports and Goods MovementMember
Select Committee on Reproductive HealthMember
Select Committee on Sea Level Rise and the California EconomyMember
Select Committee on Serving Students with DisabilitiesMember
Select Committee on the Nonprofit SectorMember
Select Committee on the Status of Boys and Men of ColorMember

First Extraordinary · Standing Committees

BudgetMember

Official committee list

Contact this office

Office: P.O. Box 942849 Sacramento, CA 94249-0018

Official contact page Official office source

Past officeholders1 verified succession record

Succession history

Explore prior service

Verified Assembly District 18 session snapshots beginning with 2015–2016; one earlier session is included when needed to identify a predecessor.

Select a past officeholder

Reviewed portrait not yet available

Member

Rob Bonta

2015–2022 verified sessions

First verified session: 2015–2016
Last verified session: 2021–2022
Party during service: Democratic
Capacity: Member

California State Library · Demographics in the California Legislature

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 Assembly District 18

Assembly District 18 overlaps 4 mapped communities in Alameda County, including San Francisco, Oakland, Alameda, and Emeryville.

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Places and districts shownLoading related pages

Past elections

Election history

Select a past election

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 Assembly District 18

June 2, 2026 Statewide Direct Primary Election · 4 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

Legislative session

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

Mia Bonta is listed as the author of each assembly bill below. Statuses were reviewed August 17, 2026. Showing all 35 bills.

Open the complete official session search

Official directory

Assemblymember directory record for District 18

Verify the office, current officeholder or vacancy, committee assignments, contact links, 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.

California State Assembly

Office of Assemblymember Mia BontaJuly 1, 2026

Press release

AB 40 Advances Through Senate Environmental Quality Committee to Protect Californians from Unstudied Coal Impacts

Open the official release for the complete update from this office.

Official sourceRead official update

California State Assembly

Office of Assemblymember Mia BontaJune 15, 2026

Press release

Asm. Mia Bonta Introduces AB 40 to Require Full Environmental Review of Large-Scale Coal Terminals in California

Open the official release for the complete update from this office.

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

No current limitations were reported by the completion validator.

Sources used on this page9 source organizations · 13 records

California Secretary of State