San Mateo County, CA elected officials: supervisors, sheriff, school board and cities

Who holds every elected county, school board, city and special-district office in San Mateo County: 8 seats on 4 elected bodies. 3 seats were on the November 3, 2026 ballot; they update once the county certifies its results.

Board of Supervisors

San Mateo County Board of Supervisors

Each member is elected by the voters of their district.

OfficeWho holds it now
Supervisor, District 1Jackie Speier source
Supervisor, District 2Noelia Corzo source
Supervisor, District 3Ray Mueller source
Supervisor, District 4Lisa Gauthier source
Supervisor, District 5David Canepa source

Official website

County officers

OfficeWho holds it nowNext term
AssessorMark Church sourceOn the Nov 3, 2026 ballot: count not certified yet
District AttorneySteve Wagstaffe sourceOn the Nov 3, 2026 ballot: count not certified yet
Sheriff-CoronerChristina Corpus sourceOn the Nov 3, 2026 ballot: count not certified yet

How many local governments San Mateo County has

The Census Bureau's 2022 Census of Governments counts 94 local governments in San Mateo County. This page lists the ones whose offices are elected.

Kind of governmentCensus count (2022)Listed on this page
County government11
Cities, towns, villages and townships200
School districts (school boards)240
Special districts (elected boards)490

Census Bureau, 2022 Census of Governments: Government Units Listing (census.gov).

About these counts

The Census Bureau counts every independent local government once, in the county it assigns it to: the one it mostly serves or where it's based. A city or district that crosses county lines is counted in only one county, so it may be listed on this page but counted elsewhere, or the other way around. Many special districts, such as housing authorities, have appointed boards, and some places have more than one elected body, so the two columns measure different things. School systems run by a county, city or the state aren't counted as separate governments (1 in San Mateo County), though their boards may be listed here; in some states the Bureau counts community or state colleges as school districts. The counts are as of 2022.

Who lives in San Mateo County

742,340people
40.9median ageU.S.: 38.9
$158,855 household incomeU.S.: $80,734
6.7%below the U.S.: 12.5%
53.7%of adults 25+ with a bachelor's degreeU.S.: 35.7%
$1,559,600median home valueU.S.: $332,700
4.8%unemployed (of the labor force)U.S.: 5.2%
35.7%born outside the U.S.U.S.: 14.1%
2.9%of adults are veteransU.S.: 6.2%
3.8%U.S.: 8.4%
48.4%of renting households pay of income on rentU.S.: 51.1%
34.9%of homeowners with a mortgage pay of income on housing costsU.S.: 28.1%

Race and Hispanic origin: Hispanic or Latino 24.9% · White 34.7% · Black 2% · Asian 31% · Other or more than one race 7.4% (Hispanic or Latino people can be of any race; the other groups are non-Hispanic.)

Census Bureau, 2020–2024 5-year estimates (data.census.gov).

About these figures

The American Community Survey asks about 3.5 million households a year about who lives there, their work, income, schooling and housing. The 5-year estimates pool 2020–2024 answers so that every county and district has enough of them. They're estimates with a (larger for smaller places), and they're different from the once-a-decade census count. "Median" means half are above and half below. Household income is before taxes and includes everyone in the household. The unemployment share here is the survey's five-year average, so it differs from the monthly rate in the BLS jobs report. Race and Hispanic origin are as people describe themselves.

Health insurance means any coverage, private or public (such as Medicaid or Medicare), when people answered; the share is of everyone except people on active military duty and people living in institutions such as prisons and nursing homes. The housing shares are of renting households, and of homeowners with a mortgage, for whom the Census Bureau can compute them (households with no income, or renters who pay no cash rent, are left out). Rent here is gross rent, rent plus utilities; owner costs include the mortgage, property taxes, insurance, utilities and fees.

Jobs in San Mateo County

3.9%September 2026, preliminary. A year earlier: 4.1%. California: 5.1%.
15,961people unemployedSeptember 2026, preliminary.
394,740people employedSeptember 2026, preliminary. Counted where they live, not where they work.
410,701in the September 2026, preliminary.
Unemployment rate, yearly average, San Mateo County 0.0%1.9%3.9%5.8%7.8% 20162018202020222024

Yearly average unemployment rate, 2016–2025.

Every month, last two years
MonthRateUnemployedEmployedLabor force
September 2026 (preliminary)3.9%15,961394,740410,701
August 20264.0%16,339391,727408,066
July 20263.8%15,580393,129408,709
June 20263.7%14,872391,379406,251
May 20263.2%12,793391,870404,663
April 20263.4%13,697393,928407,625
March 20263.5%14,327396,437410,764
February 20263.7%15,324397,100412,424
January 20263.8%15,542392,334407,876
December 20253.6%14,923398,921413,844
November 20253.9%16,361398,487414,848
October 2025not collected (2025 federal shutdown)
September 20254.1%17,130400,385417,515
August 20254.3%17,710396,719414,429
July 20254.2%17,553399,163416,716
June 20254.1%16,737395,464412,201
May 20253.5%14,474395,745410,219
April 20253.6%14,892396,201411,093
March 20253.7%15,592401,432417,024
February 20253.8%15,958399,584415,542
January 20253.9%16,080397,435413,515
December 20243.5%14,604398,141412,745
November 20243.8%15,721397,159412,880
October 20243.8%15,669397,653413,322
Yearly averages
YearRateUnemployedEmployedLabor force
2025 (11 months)3.9%16,128398,140414,268
20243.7%15,266400,673415,939
20233.1%13,194410,038423,232
20222.6%10,977415,404426,381
20214.9%20,011391,665411,676
20207.4%30,261379,405409,666
20192.2%9,504418,066427,570
20182.4%10,131409,890420,021
20172.9%12,231402,956415,187
20163.3%13,628398,476412,104

Bureau of Labor Statistics, Local Area Unemployment Statistics, : BLS publishes county figures only that way, so they rise and fall with the seasons; compare a month with the same month a year earlier rather than with the month before. California's figure above is on the same basis; seasonally adjusted, as in BLS's monthly state release, it was 5.1% in September 2026. The latest month is preliminary and is revised the next month, and BLS revises earlier years each spring. People are counted where they live. October 2025 wasn't collected during the 2025 federal government shutdown, so 2025's yearly average covers 11 months.

Crime reported in San Mateo County

203.2 per 100,0002025. California: 432.7.
1,247.8 per 100,0002025. California: 1,792.2.
5murders2025, 1,655 violent crimes in all.
Earlier years
YearViolentRatePropertyRate
20251,655203.210,1641,247.8
20241,930240.912,1251,513.7
20232,291289.614,1711,791.2
20222,271287.415,4591,956.2
20201,743206.315,4861,833.0
20191,812213.015,8891,867.8
20181,780208.314,2361,665.7
20171,894222.214,8971,747.9
20161,614189.814,7411,733.8
By police agency (17)
AgencyYearViolentPropertyPeople served
San Mateo County Sheriff's Office20252351,361127,999
San Mateo Police Department20251701,525102,362
Daly City Police Department20252531,373100,564
Redwood City Police Department20253021,20082,769
South San Francisco Police Department202519978064,363
San Bruno Police Department20258061241,622
Pacifica Police Department20255135036,699
Menlo Park Police Department20256050332,887
Foster City Police Department20252324532,395
Burlingame Police Department20254960130,794
East Palo Alto Police Department202516145929,143
Belmont Police Department20253734326,859
Hillsborough Police Department202555211,126
Atherton Police Department20255556,986
Brisbane Police Department202418554,493
Broadmoor Police Department20255294,412
Colma Police Department2025186321,411

Crimes to the county's city and county police agencies (FBI Uniform Crime Reporting, Return A), per 100,000 people they serve. Years with incomplete reporting are left out. Crime in California · the U.S.

Police staffing

1.39 per 1,000 residents2025, 17 agencies serving 737,016 people.
1,026sworn officers2025, full-time, as of October 31.
670civilian staff2025, full-time.
Agencies counted (17), 2025
AgencyOfficersCiviliansPeople served
San Mateo County Sheriff's Office337389127,999
San Mateo Police Department11153102,362
Daly City Police Department8135100,564
Redwood City Police Department833382,769
South San Francisco Police Department753364,363
San Bruno Police Department461741,622
Menlo Park Police Department431632,887
Burlingame Police Department351830,794
Foster City Police Department341432,395
East Palo Alto Police Department351329,143
Belmont Police Department281526,859
Pacifica Police Department33436,699
Hillsborough Police Department25911,126
Atherton Police Department2096,986
Colma Police Department1871,411
Brisbane Police Department1444,625
Broadmoor Police Department814,412
Earlier years
YearOfficersPer 1,000CiviliansAgencies
20251,0261.3967017
20241,0261.4166517
20231,0111.4164317
20211,0291.3663217
20201,0331.3565417
20191,0471.3666117
20181,0601.3764717
20171,0601.3761917
20161,0631.3859517

Full-time employees of the county's city police departments and sheriff's office, as each reported them to the FBI (Uniform Crime Reporting, Law Enforcement Employees), per 1,000 people in the areas those agencies serve (the FBI's population figures). A year is shown only when every one of these agencies sent a count; a count under half or over double the agency's own counts in nearby years is treated as not sent. Towns policed under contract by another agency are counted through that agency. State police, campus and other agencies aren't included. Sheriffs' offices often also run the county jail and courthouse security, so their staff counts include those jobs.

Quick answers

Who is the San Mateo County Assessor?
Mark Church is the Assessor of San Mateo County, California. The seat was on the November 3, 2026 ballot; the count isn't certified yet.
Who is the San Mateo County District Attorney?
Steve Wagstaffe is the District Attorney of San Mateo County, California. The seat was on the November 3, 2026 ballot; the count isn't certified yet.
Who is the San Mateo County Sheriff-Coroner?
Christina Corpus is the Sheriff-Coroner of San Mateo County, California. The seat was on the November 3, 2026 ballot; the count isn't certified yet.
Who are the San Mateo County commissioners?
Jackie Speier (Supervisor, District 1); Noelia Corzo (Supervisor, District 2); Ray Mueller (Supervisor, District 3); Lisa Gauthier (Supervisor, District 4); David Canepa (Supervisor, District 5).
What is the population of San Mateo County?
About 742,340 people, with a median age of 40.9; the median household income is $158,855 and 6.7% live below the poverty line (Census Bureau, American Community Survey 2020–2024 5-year estimates).
What is the unemployment rate in San Mateo County?
3.9% in September 2026 (preliminary): 15,961 people unemployed in a labor force of 410,701, against 4.1% a year earlier (Bureau of Labor Statistics, Local Area Unemployment Statistics, not seasonally adjusted).
How many local governments are there in San Mateo County?
94 in the Census Bureau's 2022 Census of Governments: 1 county, 20 municipal, 24 school district and 49 special district governments.

Officeholders as of November 6, 2026, from the Secretary of State's California Roster; each name links to its source. Officials change between elections (appointments, resignations), and the body's own website is the authority. Party is shown only for offices elected on a partisan ballot.

San Mateo County's 2026 ballot and results · Every California county · California's members of Congress

See your members of Congress and every race and measure on your ballot in San Mateo County, from your address. Your address stays in your browser.Look up my races

See something wrong on this page? Report a problem · Corrections