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June 5, 2018 — California Primary Election
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San Mateo CountyCandidate for Sheriff

Photo of Mark D. Melville

Mark D. Melville

Deputy Sheriff
52,996 votes (39.51%)
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My Top 3 Priorities

  • I'm committed to accountability, integrity, honesty, progressive policing, unconscious bias training, and a proactive approach to problem solving.
  • I will protect the vulnerable, reduce crime, and improve quality of life for all San Mateo County residents.
  • Zero Tolerance Policy on Human Sex Trafficking



Profession:Deputy Sheriff
Deputy Sheriff, San Mateo County, CA — Appointed position (2008–current)
City Council Member, City of Gustine, CA — Elected position (2002–2006)
City Manager & Director of Public Safety, City of Livingston, CA — Appointed position (1999–2002)
City Manager, City of Guistine, CA — Appointed position (1991–1999)
Chief of Police, City of Guistine — Appointed position (1988–1991)


CAL Poly, Pomona, CA P.O.S.T. Management Certificate, Management of Law Enforcement Certificate (1992)
CAL Poly, Pamona, CA P.O.S.T. Executive Certificate, Peace Officers Standards and Training (1990)
Humboldt State University P.O.S.T. Advanced Certificate, Multiple Subjects in Policing (1986)
Humboldt State University P.O.S.T. Supervisory Certificate, Supervision of Law Enforcement (1986)
Ohlone College AA (with honors), Criminal Justice (1983)


I was born and raised in San Francisco, where I was one of five children.  My father was a carpenter, and my mother was in customer service at Wilson Sporting Goods. We were raised in the Catholic faith, and I attended Immaculate Conception Elementary School, and Sacred Heart High School in San Francisco. I have two wonderful children and four beautiful grandchildren.   


 My law enforcement career started in July of 1975.  I have had the privilege to serve in cities and counties throughout California where my experience in police work and public safety have led to my current position with the San Mateo County Sheriff’s Office as a Deputy Sheriff. This breadth of experience has prepared me to serve as Sheriff of San Mateo County.


Who supports this candidate?

Organizations (1)

  • Coastside Progressive Democrats, Chartered Club of the SMC Democratic Central Committee

Elected Officials (3)

  • Sabrina Brennan, San Mateo County Harbor Commissioner
  • Edmundo Larenas, San Mateo County Harbor Commissioner
  • Harvey Rarback, City of Half Moon Bay, Vice Mayor

Individuals (1)

  • Dan Stegink Candidate for County Supervisor, City of Pacifica, Planning Commissioner

Political Beliefs

Political Philosophy

I have committed over 40 years to protecting and serving the public, and have found that law enforcement must be transparent and work with the community, to ensure that public safety is not a commodity available only to certain groups of people. I havhave committed 40 years to protecting and serving the public and, like you, can see that change is needed.  

I have learned that trust between leadership and staff is critical, and more importantly with the public we promise to protect and serve.

Position Papers

Mark D. Melville: My Policy on Human Sex Trafficking


Policy on Human Sex Trafficking. 

As your Sheriff, I will actively promote solutions that encompass Education, Enforcement, and Prosecution. Law Enforcement Agencies and citizens must maintain and enforce a “No Tolerance” attitude towards Human Sex Trafficking. When we work together, we can restore victims’ dignity and freedom.    

ICE and Sanctuary City Status


Mark D. Melville's policies towards ICE and Sanctuary City Status of Suspects

Individuals who are considered to be in violation of US Immigration Laws will be dealt with by Federal Authorities, not local law enforcement officials.   California law enforcement officials are specifically directed in how we are to deal with Federal Officials, as well as those who are determined to be  undocumented Immigrants.  Immigrants are valuable and essential members of our  community, and shall be treated as such. As your Sheriff, I will enforce the  provisions of Senate Bill 54, and in those areas of the law where I have discretion as to how a provision is to be handled, I will handle it in the best  interest of the immigrant.  All residents of San Mateo County will be treated  with dignity and respect, no matter what their document status is.

Recruitment and Retention of Qualified Deputies


Recruitment and Retention of Qualified Deputies

Vacancies in law enforcement have reached crisis proportions, and we must take an active role in the recruitment of individuals. We have some visibility through various programs for youth administered by the Sheriff’s office, but we need to do more. As your Sheriff, I will assume the role of educator, mentor, and even parent when warranted. Targeting this population for law enforcement careers is a realistic and productive long-term solution.    

Videos (4)

— May 6, 2018 Mark D. Melville for Sheriff 2018 Campaign

Instilling confidence in law enforcement, specifically with our deputies working for the San Mateo County Sheriffs Office.

— May 6, 2018 Mark D. Melville for Sheriff 2018 Campaign

Explaining our duties and obligations when detaining a suspect who is an undocumented immigrant. 

— May 6, 2018 Mark D. Melville for Sheriff 2018 Campaign

Casual chat with Mark about hsi career in public service and law enforcement.

— May 6, 2018 Mark D. Melville for Sheriff 2018 Campaign

Mark D. Melville discusses his policies on gun ownership, and the Second Amendment.

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