Chair of Los Angeles County

The Chair of the Los Angeles County also called Chair of the Los Angeles County Board of Supervisors and sometimes called the Mayor of Los Angeles County is responsible for the day-to-day operations of the county government. The chair is the presiding officer for the Los Angeles County Board of Supervisors.

History The Chair of Los Angeles County serves a term of one year. Upon expiration of the term the duties of the Chair are rotated among the board members by order of seniority until 2015 when the board unanimously move the rotation by order of district. When Chair Pro Tem Sheila Kuehl announced her retirement at the end for her supervisorial term her term would expire before her Chair term would begin Janice Hahn was selected to be Chair and Lindsey Horvath was Chair Pro Tem allowing Horvath to become Chair the following year and Kathryn Barger was selected to be Chair Pro Tem to resume district rotation of the County Chair. The term for a supervisor typically lasts four years, any member will get to serve as chair at least once during the duration of their term. During his or her term of office, the chair has the option of calling himself or herself “mayor”, a practice that was started by Michael D. Antonovich during his tenure as a supervisor. This tradition was not continued by the current incumbents.

Measure G On November 12, 2024, Los Angeles County voters passed Measure G, which amends the Los Angeles County Charter to create an elected County Executive, which will replace County Chair and CEO in 2028 when the office of County Executive is created.

Chairs These are the chairs/mayors of the Los Angeles County Board of Supervisors:

No.Chair/MayorParty Term startTerm endNotesChair/Mayor Pro TemPartyRef.Los Angeles County Court of Sessions administered The County until 1852 when the creation Board of Supervisors and the County Chair was formed Chair elected for a 1 year term Chair Pro Tem office was established in 19741Samuel Arbuckle rowspan="7" December 7, 1852December 6, 1853Chair2David W. AlexanderDecember 6, 1853December 5, 1854December 5, 1854December 4, 18553Thomas BurdickDecember 4, 1855December 2, 18564David LewisDecember 2, 1856December 1, 18575Jonathan R. ScottDecember 1, 1857December 7, 18586Julian A. ChavezDecember 7, 1858December 6, 18597Stephen C. FosterDemocraticDecember 6, 1859December 4, 18608Abel Stearns rowspan="4" December 4, 1860December 3, 18619Benjamin D. WilsonDecember 3, 1861December 2, 186210Julius MorrisDecember 2, 1862December 1, 1863December 1, 1863December 6, 1864Chair elected for a 2 year term 11Maurice Kremer rowspan="2" December 6, 1864December 4, 1866December 4, 1866December 1, 186812Wallace WoodworthDemocraticDecember 1, 1868December 6, 1870DemocraticDecember 6, 1870December 3, 187213Hugh Forsman rowspan="9" December 3, 1872December 1, 187414George HindsDecember 1, 1874December 5, 1876December 5, 1876December 4, 187715J.C. HannonDecember 4, 1877December 2, 187916John J. MortonDecember 2, 1879December 7, 188017Charles PragerDecember 7, 1880December 6, 188118W.F. CooperDecember 6, 1881December 5, 188219Charles PragerDecember 5, 1882December 4, 1883December 4, 1883December 1, 188520Oscar MacyRepublicanDecember 1, 1885December 6, 188721Joseph W. Venable December 6, 1887December 3, 188922S.M. PerryRepublicanDecember 3, 1889December 1, 1891RepublicanDecember 1, 1891December 5, 189323John W. Cook rowspan="15" December 5, 1893December 3, 189524Andrew W. FranciscoDecember 3, 1895December 7, 189725W.L. WoodwardDecember 7, 1897December 5, 189926Alonzo Edward DavisDecember 5, 1899December 3, 190127Edward S. FieldDecember 3, 1901December 1, 190328Orray W. LongdenDecember 1, 1903December 5, 190529Charles E. PattersonDecember 5, 1905December 3, 1907December 3, 1907December 7, 190930Clarence J. NellisDecember 7, 1909December 5, 191131Richard W. PridhamDecember 5, 1911December 2, 1913December 2, 1913December 7, 1915December 7, 1915December 4, 191732John J. HamiltonDecember 4, 1917December 3, 191833Jonathan S. DodgeDecember 3, 1918December 7, 192034Reuban F. McClellanDecember 7, 1920December 5, 192235Henry W. WrightRepublicanDecember 5, 1922December 2, 192436Reuban F. McClellan rowspan="3" December 2, 1924December 7, 1926December 7, 1926December 4, 1928December 4, 1928December 2, 193037Henry W. WrightRepublicanDecember 2, 1930December 6, 193238Frank L. ShawRepublicanDecember 6, 1932June 26, 193339Herbert C. Legg DemocraticJune 26, 1933September 29, 193640Roger W. JessupRepublicanSeptember 29, 1936December 8, 193641Leland M. FordRepublicanDecember 8, 1936December 6, 193842Roger W. JessupRepublicanDecember 6, 1938December 3, 1940Republican December 3, 1940December 2, 194143Gordon L. McDonoughRepublicanDecember 2, 1941December 8, 194244John Anson FordDemocraticDecember 8, 1942December 7, 194345Oscar L. HaugeRepublican December 7, 1943May 17, 194446Roger W. JessupRepublican May 17, 1944December 5, 194447William A. Smith December 5, 1944December 3, 194648Raymond V. DarbyRepublican December 3, 1946December 7, 194849Leonard J. RoachRepublican December 7, 1948December 5, 195050John Anson FordDemocraticDecember 5, 1950December 2, 1952DemocraticDecember 2, 1952December 7, 195451Herbert C. LeggDemocraticDecember 7, 1954March 27, 195652Burton W. ChaceRepublican March 27, 1956December 4, 195653John Anson FordDemocraticDecember 4, 1956December 2, 195854Frank G. BonelliDemocraticDecember 2, 1958December 6, 196055Ernest E. DebsDemocraticDecember 6, 1960December 4, 196256Warren M. DornRepublicanDecember 4, 1962December 4, 196457Burton W. ChaceRepublicanDecember 4, 1964December 6, 196658Frank G. BonelliDemocraticDecember 6, 1966December 3, 196859Ernest E. DebsDemocraticDecember 3, 1968December 8, 197060Warren M. DornRepublicanDecember 8, 1970December 5, 197261Peter F. SchabarumRepublican December 5, 1972December 3, 1974Chair elected for a 1 year term with the Establishment of the Chair Pro Tem62James A. HayesRepublican December 3, 1974December 2, 1975ChairBaxter WardDemocratic63Baxter WardDemocraticDecember 2, 1975December 7, 1976Edmund D. EdelmanDemocraticDemocraticDecember 7, 1976December 6, 1977Democratic64Kenneth HahnDemocraticDecember 6, 1977December 5, 1978Democratic65Peter F. SchabarumRepublican December 5, 1978December 4, 1979James A. HayesRepublican66Kenneth HahnDemocraticDecember 4, 1979December 2, 1980Baxter WardDemocratic67Edmund D. EdelmanDemocraticDecember 2, 1980December 1, 1981Peter F. SchabarumRepublicanDemocraticDecember 1, 1981December 7, 1982Republican68Peter F. SchabarumRepublican December 7, 1982 December 6, 1983Deane DanaRepublican69Michael D. AntonovichRepublican December 6, 1983December 4, 1984MayorEdmund D. EdelmanDemocratic70Edmund D. EdelmanDemocraticDecember 4, 1984December 3, 1985ChairPeter F. SchabarumRepublican71Peter F. SchabarumRepublicanDecember 3, 1985December 2, 1986Michael D. AntonovichRepublican72Michael D. AntonovichRepublicanDecember 2, 1986December 8, 1987 MayorDeane DanaRepublican73Deane DanaRepublicanDecember 8, 1987 December 6, 1988 ChairEdmund D. EdelmanDemocratic74Edmund D. EdelmanDemocraticDecember 6, 1988 December 21, 1989Peter F. SchabarumRepublican75Peter F. SchabarumRepublicanDecember 21, 1989December 4, 1990Michael D. AntonovichRepublican76Michael D. AntonovichRepublicanDecember 4, 1990December 3, 1991MayorDeane DanaRepublican77Deane DanaRepublicanDecember 3, 1991December 8, 1992ChairEdmund D. EdelmanDemocratic78Edmund D. EdelmanDemocraticDecember 8, 1992December 7, 1993Yvonne Brathwaite BurkeDemocratic79Yvonne Brathwaite BurkeDemocraticDecember 7, 1993December 6, 1994Gloria MolinaDemocratic80Gloria MolinaDemocraticDecember 6, 1994December 5, 1995Michael D. AntonovichRepublican81Michael D. AntonovichRepublicanDecember 5, 1995December 3, 1996MayorZev YaroslavskyDemocratic82Zev YaroslavskyDemocraticDecember 3, 1996December 3, 1997ChairYvonne Brathwaite BurkeDemocratic83Yvonne Brathwaite BurkeDemocraticDecember 3, 1997December 8, 1998 Don KnabeRepublican84Don KnabeRepublicanDecember 8, 1998 December 7, 1999Gloria MolinaDemocratic85Gloria MolinaDemocraticDecember 7, 1999December 5, 2000Michael D. AntonovichRepublican86Michael D. AntonovichRepublicanDecember 5, 2000December 4, 2001MayorZev YaroslavskyDemocratic87Zev YaroslavskyDemocraticDecember 4, 2001 December 3, 2002ChairYvonne Brathwaite BurkeDemocratic88Yvonne Brathwaite BurkeDemocraticDecember 3, 2002 December 2, 2003Don KnabeRepublican89Don KnabeRepublicanDecember 2, 2003 December 7, 2004Gloria MolinaDemocratic90Gloria MolinaDemocraticDecember 7, 2004December 6, 2005Michael D. AntonovichRepublican91Michael D. AntonovichRepublicanDecember 6, 2005December 5, 2006MayorZev YaroslavskyDemocratic92Zev YaroslavskyDemocraticDecember 5, 2006 December 4, 2007ChairYvonne Brathwaite BurkeDemocratic93Yvonne Brathwaite BurkeDemocraticDecember 4, 2007 December 2, 2008Don KnabeRepublican94Don KnabeRepublicanDecember 2, 2008 December 8, 2009Gloria MolinaDemocratic95Gloria MolinaDemocraticDecember 8, 2009December 7, 2010Michael D. AntonovichRepublican96Michael D. AntonovichRepublicanDecember 7, 2010December 6, 2011MayorZev YaroslavskyDemocratic97Zev YaroslavskyDemocraticDecember 6, 2011 December 4, 2012ChairMark Ridley-ThomasDemocratic98Mark Ridley-ThomasDemocraticDecember 4, 2012December 3, 2013Don KnabeRepublican99Don KnabeRepublicanDecember 3, 2013December 2, 2014Michael D. AntonovichRepublicanChair Elected by District Rotation100Michael D. AntonovichRepublicanDecember 2, 2014December 8, 2015MayorHilda SolisDemocratic101Hilda SolisDemocraticDecember 8, 2015December 6, 2016ChairMark Ridley-ThomasDemocratic102Mark Ridley-ThomasDemocraticDecember 6, 2016December 5, 2017Sheila KuehlDemocratic103Sheila KuehlDemocraticDecember 5, 2017December 4, 2018Janice HahnDemocratic104Janice HahnDemocraticDecember 4, 2018December 3, 2019Kathryn BargerRepublican105Kathryn BargerRepublican December 3, 2019December 8, 2020Hilda SolisDemocratic106Hilda SolisDemocraticDecember 8, 2020December 7, 2021Holly MitchellDemocratic107Holly MitchellDemocraticDecember 7, 2021December 6, 2022Sheila KuehlDemocratic108Janice HahnDemocraticDecember 6, 2022December 5, 2023Lindsey HorvathDemocratic109Lindsey HorvathDemocraticDecember 5, 2023December 3, 2024Kathryn BargerRepublican110Kathryn BargerRepublicanDecember 3, 2024December 2, 2025Hilda SolisDemocratichttps://ktla.com/video/kathryn-barger-becomes-chair-of-the-l-a-county-board-of-supervisors/10306664/111Hilda SolisDemocraticDecember 2, 2025IncumbentHolly MitchellDemocratic

Duties

"The Mayor/Chair shall possess the powers and perform the duties prescribed, as follows:

a. Have general direction over the Board Room and assign seats for the use of the members; b. Preserve order and decorum; prevent demonstrations; order removed from the Board Room any person whose conduct deemed objectionable; and order the Board Room cleared whenever deemed necessary (Government Code Section 54957.9, see Appendix); c. Assure that attendants of the public at meetings in the Board Room shall be limited to that number which can be accommodated 8by the seating facilities regularly maintained therein. No standees shall be permitted; d. Allocate the length of time for public discussion of any matter in advance of such discussion, with the concurrence of the Board; e. Allocate equal time to opposing sides insofar as possible taking into account the number of persons requesting to be heard on any side; f. Limit the amount of time that a person may address the Board during a public discussion period in order to accommodate those persons desiring to speak and to facilitate the business of the Board; g. Authorize not more than one Set Matter per Board meeting. Any additional Set Matters shall require Board action; and