The source record
A functioning Census entity.
The Census ACTIVE field is Y for this record.
- Census ID
- 100642
- Record type
- General-purpose government
- Classification
- County
- Status
- Functioning
U.S. Census government inventory · ID 100642
County of Solano.
General-purpose government in California · Census county area: Solano.
General-purpose governmentCountyFunctioning
Published contact fields
Contact and location
Mailing address675 TEXAS ST, STE 6500 · FAIRFIELD, CA · 94533-6342
Census contact/title fieldCounty Administrator
County areaSolano
Reported websiteOpen reported website ↗
Websites are primarily self-reported and received only limited Census Bureau quality control. County area can mean the area most served or the headquarters county when boundaries cross counties.
Official 2026 California roster
Current public officials reported by the jurisdiction
COUNTY DIRECTORY
View source page 25 ↗Solano
Governing board and executive
County Supervisor — District 1Erin Hannigan
County Supervisor — District 2Monica Brown
County Supervisor — District 3Jim Spering
County Supervisor — District 4John M. Vasquez
County Supervisor — District 5Mitch Mashburn
Records and elections
Clerk of the BoardBirgitta E. Corsello
County Clerk-RecorderIra Rosenthal
Registrar of VotersTim Flanagan
Finance and property
AssessorMarc Tonnesen
Auditor-ControllerSimona Padilla-Scholtens
Treasurer/Tax CollectorCharles Lomeli
Public safety and justice
Chief Probation OfficerChristopher Hansen
District AttorneyKrishna Abrams
Fire ChiefGeoff Belyea
Public DefenderElena D'Agustino
Sheriff-CoronerTom Ferrara
Administration
County AdministratorBirgitta E. Corsello
County CounselDennis Bunting
Education and libraries
County LibrarianSuzanne Olawski
Superintendent of SchoolsLisette EstrellaHenderson
Judicial leadership
Presiding JudgeDonna Stashyn
Assistant Presiding JudgeE. Bradley Nelson
Other public officials
Behavioral HealthSandra Sinz
Chief Administrative OfficerBirgitta E. Corsello
Child Support Services DirectorPamela Posehn
Community Development DirectorBill Emlen
Emergency ServicesDon Ryan
Social Services DirectorJerry Huber
General Services Agency DirectorMegan M. Callahan
Human Resource DirectorMarc Fox
Information Technology DirectorTim Flanagan
Public Works Agency DirectorMatt Tuggle
Phone(707) 784-6100Address675 Texas St., Fairfield, CA 94533Jurisdiction websitehttps://www.solanocounty.com ↗
The CalRoster labels county entries elected and appointed officials and does not publish a selection method for each individual role. Election.org therefore does not infer elected or appointed status from the title alone. The Secretary of State notes that each local jurisdiction supplies its own roster data; this is a dated public record, not a live officeholder feed.
Published context
Scale and parent relationship
Population estimate449,2182023
Evidence boundary
What each source proves—and what it does not.
Established by the published records
- The entity or system appears in the 2025 Census listing.
- Its Census category, identifier, and functioning/dormant field.
- Only the location, function, population, enrollment, and contact fields actually published.
- The separate 2026 CalRoster reports the public-official roles and holder text shown above.
Not established by these records
- Whether each governing or administrative role is elected, appointed, or mixed.
- The exact geographic service boundary or that a reported website remains current.