The Orange County Board of Supervisors is the five-member governing body of [Orange County], [California] along with being the executive of the county[1].

Orange County is the third most populous county in California and the sixth most populous in the United States, with a 2017 population of 3,190,400, 34 incorporated cities, and covering 799 square miles.

! Membership

The Board consists of five Supervisors elected by districts to four-year terms by the citizens of Orange County. The Supervisors represent districts of approximately 600,000 people (state assembly districts represent approximately 465,000 people, congressional districts represent approximately 711,000 people and state senatorial districts represent approximately 931,000 people)[1].

Supervisorial elections take place in June, with run-off elections (if necessary) in November. Supervisorial terms begin the first Monday after January 1 after the election. Vacancies on the Board are filled via special election since Orange County voters adopted a county charter in March 2002. Prior to the adoption of the charter, vacancies on the Board were filled by appointment by the Governor of California. Each Supervisor can serve two four-year terms[1].

! Functions

The board makes decisions relating to land use, public utilities, and transportation, both directly and indirectly through its power over budgets and appointments to boards, committees, and commissions. Services that are ultimately managed by the board include regional parks, water, sewers, animal control, buses, freeways, and commuter rail[1].

! Election History

%%zebra-table
|| Year || [1st District|County Supervisor 1st District] || [2nd District|County Supervisor 2nd District] || [3rd District|County Supervisor 3rd District] || [4th District|County Supervisor 4th District] || [5th District|County Supervisor 5th District] || Chair || Vice Chair || Races || Notes
| 2004 | | |  | | | [Thomas Wilson] | [Jim Silva] | [2004 OC BoS] |
| 2005 | [Lou Correa] | | [Bill Campbell] | | |[Bill Campbell] | [Thomas Wilson] | |
| 2006 | | | | | | [Bill Campbell] | [Chris Norby] | [2006 OC BoS] | [Lou Correa] wins election for [SD34]
| 2007 | [Janet Nguyen] | [John Moorlach] | | [Chris Norby] | [Pat Bates] | [Chris Norby] | [John Moorlach] | [2007 Special OC BoS] | Special election to replace [Lou Correa]
| 2008 | | | | | | [John Moorlach] | [Pat Bates] | [2008 OC BoS] |
| 2009 | [Janet Nguyen] | | [Bill Campbell] | | | [Pat Bates] | [Janet Nguyen] | | [Chris Norby] wins [2010 Special AD72]
| 2010 | | | | | | [Janet Nguyen] | [Bill Campbell]  | [2010 OC BoS] | Special election to replace [Chris Norby] (consolidated with the regular primary election)
| 2011 | | [John Moorlach] | | [Shawn Nelson] | [Pat Bates] | [Bill Campbell] | [John Moorlach] | |ea| 2012 | | | | | | [John Moorlach] | [Shawn Nelson] | [2012 OC BoS] |
| 2013 | [Janet Nguyen] | | [Todd Spitzer] | | | [Shawn Nelson] | [Pat Bates] | |
| 2014 | | | | | | [Shawn Nelson] | [Pat Bates] | [2014 OC BoS] | [Janet Nguyen] wins [SD34]
| 2015 | [Andrew Do] | [Michelle Steel] | | [Shawn Nelson] | [Lisa Bartlett] | [Todd Spitzer] | [Lisa Bartlett] | [2015 Special OC BoS] | Special election to replace [Janet Nguyen]
| 2016 | | | | | | [Lisa Bartlett] | [Michelle Steel] | [2016 OC BoS] |
| 2017 | [Andrew Do] | | [Todd Spitzer] | | | [Michelle Steel] | [Andrew Do] | |
| 2018 | | | | | | [Andrew Do] | [Shawn Nelson] | [2018 OC BoS] |
| 2019 | | [Michelle Steel] | [Donald Wagner] | [Doug Chaffee] | [Lisa Bartlett] | [Lisa Bartlett] | [Michelle Steel] | [2019 Special OC BoS] | Special election to replace [Todd Spitzer]
| 2020 | | | | | | [Michelle Steel] | [Andrew Do] | [2020 OC BoS] | [Michelle Steel] wins [CA48]
| 2021 | [Andrew Do] | | [Donald Wagner] | | | | |[2021 Special OC BoS] | Special election to replace [Michelle Steel]
| 2022 | | | | | | | | [2022 OC BoS] |
| 2023 | | | | | | | | | [Michelle Steel] and [Lisa Bartlett] termed out
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! Sources
* [https://en.wikipedia.org/wiki/Orange_County_Board_of_Supervisors#Chairs_and_Vice_Chairs]

! Footnotes

[#1] [Wikipedia|https://en.wikipedia.org/wiki/Orange_County_Board_of_Supervisors]\\