County supervisorial district
San Bernardino County Supervisorial District 4
San Bernardino County Supervisorial District 4 is one of five adopted county electoral districts in San Bernardino County. Cities, Census places, and public districts that overlap it are linked below.
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Data coverage
StateCalifornia
CountySan Bernardino County
County districtSan Bernardino County Supervisorial District 4
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This is the current adopted county supervisorial boundary.
Area overview
San Bernardino County Supervisorial District 4 at a glance
Official 2020-2024 American Community Survey estimates are paired with current archived boundary relationships.
Community snapshot
Race and ethnicity
Not available Hispanic or LatinoNot available White aloneNot available Asian aloneNot available Black aloneNot available Two or more racesNot available Median household income
Race categories and Hispanic or Latino ethnicity are separate Census concepts and can overlap.
Government browsing
County representation
San Bernardino County Supervisorial District 4
District boundaries can split a city or Census place; an address remains the final check for exact eligibility.
Public schools
School districts intersecting San Bernardino County Supervisorial District 4
Brea-Olinda Unified School DistrictCentral Elementary School DistrictChaffey Joint Union High School DistrictChino Valley Unified School DistrictCorona-Norco Unified School DistrictCucamonga Elementary School DistrictMountain View Elementary School DistrictOntario-Montclair School DistrictPlacentia-Yorba Linda Unified School DistrictPomona Unified School DistrictUpland Unified School DistrictWalnut Valley Unified School District
School and trustee-area assignments can vary by address even within the same location.
Higher education
Community college districts intersecting San Bernardino County Supervisorial District 4
Chaffey Community College DistrictCitrus Community College DistrictMt. San Antonio Community College DistrictNorth Orange County Community College DistrictRiverside Community College District
Community college districts are separate from K–12 public school districts and may cross county or city boundaries.
Available records
San Bernardino County Supervisorial District 4 election and finance snapshot
Available figures connect San Bernardino County Supervisorial District 4 to the District 2 election and linked race summary.
District contests
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published contests currently linked to San Bernardino County Supervisorial District 4
Election pages
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certified and scheduled stages
Reported contributions
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records connected to current summaries
Reported payments
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records connected to current summaries
These totals summarize source-backed records currently connected to the listed contests. Missing or unlinked filings do not mean a candidate, committee, or measure reported zero activity.
Current elections
November 3rd, 2026 Election
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Past elections
Completed elections affecting San Bernardino County Supervisorial District 4
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Community representation
Community advisory bodies
Verified councils or committees that provide a public forum for San Bernardino County Supervisorial District 4 and advise San Bernardino County officials.
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These bodies are advisory to county officials; they are not a city council or separate municipal government.
Local reporting
News about San Bernardino County Supervisorial District 4
Direct local reporting is used when available. If no suitable CDP-specific story is available, a clearly labeled county-district story supplies one-level-up context. Please click through to visit and support local journalism.
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Methodology and limits
Data coverage and sources
Coverage is assessed against the information expected for this kind of area and is updated as new relationships are verified.
Current assessment
Developing coverage
Municipal records are available, while school, special-district, and overlapping representation layers remain incomplete.
Assessed August 8, 2026
Sources used on this page
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